All Wiring Diagrams for Ford F550 Super Duty 2003 model

AIR CONDITIONING

Heater Wiring Diagram for Ford F550 Super Duty 2003

List of elements for Heater Wiring Diagram for Ford F550 Super Duty 2003:

(in engine control harness, at breakout for front heater blower motor resistor) s152
(in engine control harness, near breakout for g108) s180
(in main harness, near breakout sunload sensor) s235
(in main harness, near breakout to radio) s290
Blower motor relay
Blower motor switch
C270a
C270g
C294a
C294b
C294c
C294d
Central junction box (cjb) (behind lower left side of dash)
Defrost
Floor
Front function selector switch assembly
Front heater blower motor resistor (at rear of engine compt)
Fuse 10a
Fuse 40a
G201 (behind left side of dash)
Heater blower motor (at right rear side of engine compt)
High
Hot at all times
Hot in run
Illumination
Interior lights system
Low
Med
Mix
Mode selector switch
Of engine compartment) g108
Off
S257 (in main harness, near breakout to temperature blend door actuator)
Solid state
Temperature blend door actuator (behind right side of dash)
Temperature control potentiometer
Vent

Manual A/C Wiring Diagram for Ford F550 Super Duty 2003

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List of elements for Manual A/C Wiring Diagram for Ford F550 Super Duty 2003:

(6.0l)
(6.0l: in engine control harness, at breakout for auxiliary relay box 5) s171
(at left rear side of engine compt) g100
(at left side of eng compt) g101
(at right side of engine compt) g108
(exc 6.0l)
(exc 6.0l) (6.0l)
(except 6.0l) (6.0l)
(in engine control harness, at breakout for front heater blower motor resistor) s152
(in engine control harness, near breakout for g100) s122
(in engine control harness, near breakout for g108) s180
(in engine control harness, near breakout for left headlight) s109
(in engine control harness, near breakout for powertrain control module)
(in main harness, near breakout sunload sensor) s235
(in main harness, near breakout to radio) s290
5.4l/6.8l
6.0l
7.3l
A/c clutch relay
A/c clutch solenoid
A/c compressor clutch diode
A/c compressor cycling switch (in right rear of engine compartment, on a/c accumulator)
A/c high pressure switch (in right side of engine compt)
A/c press sw in
A/c press switch sig rtn
Auxiliary relay box 4 auxiliary relay box 5 (at left rear side of engine compt)
Blower motor relay
Blower motor switch
Breakout for g101)
C1381a
C1381c
C175
C270a
C270f
C270g
C270h
C294a
C294b
C294c
C294d
Central junction box (cjb) (behind lower left side of dash)
Cooling fan speed sig
Defrost
Dual pressure (6.0l) (at front of engine)
Electronic fan clutch (6.0l)
Electronic fan clutch ctrl
Exc 6.0l
Except 6.0l
Floor
Front function selector switch assembly
Front heater blower motor resistor (at rear of engine compt)
Fuse 10 10a
Fuse 10a
Fuse 23 20a
Fuse 27 15a
Fuse 40a
G108 (at right side of engine compt)
G201 (behind left side of dash)
Heater blower motor (at right rear side of engine compt)
High
Hot at all times
Hot in run
Hot in start or run
Illumination
Interior lights system
Low
Max
Med
Mix
Mode selector switch
Mode switch
Nca
Near breakout for g100)
Normal
Normal max
Of engine compartment) g108
Off
Powertrain control module (pcm) (on left side of firewall)
Rear air conditioning circuit (excursion)
S106
S116
S119
S162 (in engine control harness, near breakout for g100)
S173 (in engine control harness, near breakout for g100)
S180 (in engine control harness, near breakout for g108)
S257 (in main harness, near breakout to temperature blend door actuator)
Sig rtn
Solid state
Switch
Temperature blend door actuator (behind right side of dash)
Temperature control potentiometer
Vacuum pump motor (diesel) (in right side of engine compt)
Vent
Vref

ANTI-LOCK BRAKES

Anti-lock Brakes Wiring Diagram for Ford F550 Super Duty 2003

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List of elements for Anti-lock Brakes Wiring Diagram for Ford F550 Super Duty 2003:

(in engine control harness, near breakout for c144)
(in engine control harness, near breakout for left headlight) s159
(in main harness, near breakout to brake pedal position switch)
4x4 high/low indicator switch (near digital transmission range sensor)
6.0l
Abs control module (at left side of engine compt)
Brake fluid level switch (on brake fluid reservoir)
Brake pedal position (bpp) switch (behind left side of dash, above brake pedal)
C220b
C220c
C270a
C270f
C270m
C281b
Central junction box (cjb) (behind lower left side of dash)
Computer data lines system
Cooling fans system
Engine controls, wiper/washer, instrument cluster, cruise control, sound, transmissions systems
Four-wheel drive control module (behind right side of dash)
Fuse 10a
Fuse 60a
G100 (at left rear side of engine compt)
G105 (at left front side of engine compt)
G300 (on vehicle floor, in left front footwell)
Ground
Hot at all times
Hot in run
Instrument cluster
Iso
Left front wheel speed sensor (at left front wheel)
Nca
Rear axle speed sensor (on differential)
Red/pnk
Right front wheel speed sensor (at right front wheel)
S102
S109
S111
S163
S178 (in engine control harness, near breakout for g101)
S201
S228
S259
Vbatt
Vpwr
With electronic shift on the fly
With mechanical shift on the fly

ANTI-THEFT

Power Door Locks Wiring Diagram, with Keyless Entry for Ford F550 Super Duty 2003

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List of elements for Power Door Locks Wiring Diagram, with Keyless Entry for Ford F550 Super Duty 2003:

(behind
(in body main harness, near breakout for c340)
(w/ heated seats: near breakout for c3049) (w/0 heated seats: near breakout for c3007) (w/ memory: near breakout for c327)
Air conditioning system
Autolamps on
C2113a
C2113b
C2113c
C270a
C270b
C270e
Central junction box (cjb) (behind lower left side of dash)
Diagnostic
Door ajar sw
Door lock
Door lock out
Door unlock
Dr door relay
Driver side door lock switch
Driver side front door ajar switch
Driver side rear door ajar switch
Ext lamp pwr
Exterior lights system
Fuse 15a
Fuse 30a
Fuse 5a
G201 (behind left side of dash)
G900 (at left ``c" pillar)
Ground
Headlights system
Headlmp relay
Horn relay
Horns system
Hot at all times
Interior lights system
Left front door lock actuator
Left rear door lock actuator
Left side of dash) data link connector (dlc)
Lock
Pass- enger side door lock switch
Passenger side door lock actuator
Passenger side front door ajar switch
Passenger side rear door ajar switch
Pnk
Right rear door lock actuator
S214
S233
S272
S290
S300
S304
S305
S307 (in body main harness, near breakout for driver's seat module)
S318 (in body main harness, near breakout for g300)
S329 (in body main harness, near breakout for g300)
S501
S639
Sunload sens
Sunload sensor (on top center of dash)
Unlock
Vbatt
Vehicle security module (vsm) (behind left side of dash)

COMPUTER DATA LINES

Computer Data Lines Wiring Diagram for Ford F550 Super Duty 2003

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List of elements for Computer Data Lines Wiring Diagram for Ford F550 Super Duty 2003:

(in main harness, near breakout for instrument cluster) s225
(near breakout for driver's seat module) s307
(near breakout for restraints control module)
(not used)
6.0l
Abs control module (at left side of engine compt)
Auxiliary powertrain control module (6.0l/7.3l) (behind left center of dash)
C1318a
C1381a
C1381c
C1388c
C175
C2113c
C220a
C228b
C270d
C281a
C9013
C930
Central junction box (behind lower left side of dash)
Data link connector (dlc) (behind left side of dash)
Dvd player
Electronic automatic temperature control module (behind center of dash)
Except 6.0l
Four-wheel drive control module (behind right side of dash)
Fuse 12 20a
G101 (at left side of engine compt)
G202 (behind left side of dash)
Hot at all times
Injector driver module (at left side of engine compartment)
Instrument cluster
Nca
Overhead console
Parking aid module (behind right "c" pillar)
Powertrain control module (on left side of firewall)
Radio
Rear integrated control panel
Rear seat entertainment module (in center console)
Restraints control module (behind center of dash)
S217
S242
S245 (in main harness, near breakout for restraints control module)
S246
S247 (near breakout to passenger air bag module)
S284 (near breakout for data link connector)
S286 (near breakout for data link connector)
Shield
Tan
Vehicle security module (behind left side of dash)
W/ roof opening panel
W/0 roof opening panel
With dvd
With vcp

COOLING FAN

6.0L

6.0L, Cooling Fan Wiring Diagram for Ford F550 Super Duty 2003

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List of elements for 6.0L, Cooling Fan Wiring Diagram for Ford F550 Super Duty 2003:

C1381c
C270f
Central junction box (cjb) (behind lower left side of dash)
Cooling fan speed sig
Electronic fan clutch
Electronic fan clutch control
Engine coolant temperature (ect) sensor (on top left front of engine)
Fuse 10a
Hot in start or run
Nca
Powertrain control module (pcm) (on left side of firewall)
S109
S192 (near breakout for air charge temperature sensor)
Sig rtn
Vref

CRUISE CONTROL

6.0L DIESEL

6.0L Diesel, Cruise Control Wiring Diagram for Ford F550 Super Duty 2003

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List of elements for 6.0L Diesel, Cruise Control Wiring Diagram for Ford F550 Super Duty 2003:

Abs control module (at left side of eng compt)
Air bag sliding contact
Brake pedal position (bpp) switch (behind left side of dash, above brake pedal)
Brake position in
Brake press in
Brake pressure switch (on left side of engine compartment)
C1381a
C220c
C270a
C270h
Central junction box (cjb) (behind lower left side of dash)
Clutch pedal position (cpp) switch (behind left side of dash, above clutch pedal)
Coast
Fuse 10a
Fuse 20a
G300 (on vehicle floor, in left front footwell)
Horn
Hot at all times
Hot in start or run
Instrument cluster
Interior lights system
M/t
Nca
Off
Powertrain control module (pcm) (on left side of firewall)
Red
Rest
Resume
S108 (in engine control harness, near breakout for g101)
S112 (in engine control harness, near breakout for powertrain control module)
S115 (in engine control harness, near breakout for g101)
S123
S201
S228
S271
Set/ accelerate
Speed control indicator
Speed ctrl ind
Speed ctrl sw in
Speed ctrl sw rtn
Steering wheel/ speed control switch
Vpwr
Vss input
Vss signal

6.8L

6.8L, Cruise Control Wiring Diagram for Ford F550 Super Duty 2003

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List of elements for 6.8L, Cruise Control Wiring Diagram for Ford F550 Super Duty 2003:

(in engine control harness, near breakout for g101) s115
(w/ steering wheel controls)
A/t
Abs control module (at left side of engine compartment)
Accel
Air bag sliding contact
Air bag sliding contact (w/o steering wheel controls)
Air conditioning system
Brake pedal position (bpp) switch (behind left side of dash, above brake pedal)
Brake press in
Brake pressure switch (on left side of engine compt)
Brake/clutch sw in
C220c
C270a
C270g
C270h
Central junction box (cjb) (behind lower left side of dash)
Clutch pedal position (cpp) switch (behind left side of dash, above clutch pedal)
Clutch triple function switch jumper (behind left side of dash, above clutch pedal)
Coast
Exc excursion
Excursion
Exterior lights system
Fuse 10a
Fuse 15a
G108 (at right side of engine compartment)
G202 (behind left side of dash)
G300 (on vehicle floor, in left front footwell)
Ground
Horn
Horns system
Hot at all times
Hot in run
Instrument cluster
Interior lights system
M/t
Nca
Off
Power
Rest
Resume
S108 (near breakout for g101)
S124
S180
S201
S205 (in main harness, near breakout to brake pedal position switch)
S218
S228
Set/
Speed control indicator
Speed control servo (in right side of engine compt)
Speed ctrl ind
Speed ctrl sw in
Speed ctrl sw rtn
Steering wheel/ speed control switch
Vss input
Vss signal

7.3L DI TURBO DIESEL

7.3L DI Turbo Diesel, Cruise Control Wiring Diagram for Ford F550 Super Duty 2003

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List of elements for 7.3L DI Turbo Diesel, Cruise Control Wiring Diagram for Ford F550 Super Duty 2003:

(in engine control harness, near breakout for g101) s114
A/t exc excursion
Abs control module (at left side of eng compt)
Air bag sliding contact
Brake pedal position (bpp) switch (behind left side of dash, above brake pedal)
Brake position in
Brake press in
Brake pressure switch (on left side of engine compartment)
C220c
C270a
C270h
Central junction box (cjb) (behind lower left side of dash)
Clutch pedal position (cpp) switch (behind left side of dash, above clutch pedal)
Clutch position in
Clutch triple function switch jumper (behind left side of dash, above clutch pedal)
Decel- erate
Fuse 10a
Fuse 20a
G300 (on vehicle floor, in left front footwell)
Horn
Horns system
Hot at all times
Hot in start or run
Instrument cluster
M/t exc excursion
Nca
Off
Powertrain control module (pcm) (on left side of firewall)
Red
Resume
S108 (in engine control harness, near breakout for g101)
S115 (in engine control harness, near breakout for g101)
S123
S201
S228
S271
Set/ acc
Speed control indicator
Speed ctrl ind
Speed ctrl sw in
Speed ctrl sw rtn
Steering wheel/ speed control switch
Vss input
Vss signal

ELECTRONIC SUSPENSION

Electronic Suspension Wiring Diagram for Ford F550 Super Duty 2003

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List of elements for Electronic Suspension Wiring Diagram for Ford F550 Super Duty 2003:

(at left rear side of engine compt) g100
Air suspension compressor assembly (under driver's seat)
Air suspension compressor relay (in engine compt, at right fender)
Air suspension kneeling switch
Air suspension module (under left rear side of vehicle)
Air tank moisture removal valve
Air tank pressure sensor (on air tank)
Air tank valve
C1300a
C1300b
C220a
C270a
Central junction box (behind lower left side of dash)
Fuse 15a
G100 (at left rear side of engine compt)
G202 (behind left side of dash)
Hot at all times
Hot in run
In-line fuse 1 (at right side of engine compt)
Instrument cluster
Interior lights system
Left rear shock absorber solenoid valve (at left rear underside of vehicle)
Nca
Right rear shock absorber solenoid valve (at right rear underside of vehicle)
S102
S217
S296
S380
Tan
Vbatt
Vpwr

ENGINE PERFORMANCE

6.0L DIESEL

6.0L Diesel, Engine Performance Wiring Diagram (1 of 5) for Ford F550 Super Duty 2003

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List of elements for 6.0L Diesel, Engine Performance Wiring Diagram (1 of 5) for Ford F550 Super Duty 2003:

(a/t)
(bap) sens mon
(in engine control harn, near breakout for c1047)
(in engine control harn, near breakout for g101)
(in fog jumper harn, near break- out for c1045)
(in main harn, near breakout for dlc)
(in main harn, near breakout to brake pedal support) s224
(m/t)
(maf) sens out
(map) sens mon
(not used)
(scp) data -
(scp) data+
A/c clutch input
A/c clutch rly
A/c system
A/t
Abs control module
Acc
Apps monitor 1
Apps monitor 2
Apps monitor 3
Apps ref volt 2
Apps sig rtn 2
Auxiliary powertrain control module (apcm) (behind left side of dash)
Auxiliary relay box 5 (at left rear side of engine compt)
Brake ped pos sw
Brake pedal position (bpp) switch (behind left side of dash, above brake pedal)
Brake press sw in
Brake pressure switch
C135
C1381a
C270h red
Can bus 1h
Can bus 1l
Central junction box (behind lower left side of dash)
Chassis gnd
Clutch pedal position (cpp) switch (m/t) (above clutch pedal)
Computer data lines system
Cruise control system
Cust acc tp sig
Cust acc vss out
Data link connector (dlc) (behind left side of dash)
Data output link
Fuel pmp rly
Fuel pump monitor
Fuse 10a
Fuse 20a
Fuse 2a
Fuse 30a
Fuse 50a
G100
G101
G300 (on vehicle floor, in left front footwell)
Gen/bat ind
Grade/load switch (a/t)
Grd/load sw (cpp) sw
Hot at all times
Hot in run
Injector driver module power relay
Intk air temp sens
Lock
M/t
Maf sens sig rtn
Mass airflow (maf) sensor
Mod prog sig
Nca
Off
Overhead console
Park brake switch (on park brake assembly)
Park brk sw input
Pcm power diode
Pcm power relay
Powertrain control module (pcm) (on left fender, near battery)
Pto ctrl
Pwr
Pwr gnd
Pwr in
Red
Ref volt
Run
S101
S106
S114
S120 (in engine control harn, near breakout for auxiliary relay box 5)
S123
S174
S217
S284
S286
Sig rtn
Sig rtn spd ctrl
Speed ctrl ind
Speed ctrl sw in
Start
Start rly ctrl
Starting/ charging system
Starting/charging system
Tach output
To fuel pump relay (diagram 2 of 4)
Vss input
Water in fuel sens
Water in fuel sensor (at top right side of engine)

6.0L Diesel, Engine Performance Wiring Diagram (2 of 5) for Ford F550 Super Duty 2003

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List of elements for 6.0L Diesel, Engine Performance Wiring Diagram (2 of 5) for Ford F550 Super Duty 2003:

(at top front of engine) glow plug control module (gpcm)
(in engine con-
(in engine control harn, near breakout for left rear side of engine compt)
(in main harn, near breakout
Accelerator pedal position sensor (on accelerator pedal support)
Barometric absolute pressure (bap) sensor (behind left side of dash)
C1273a
C1273b
C220c
C270a
C270f
Central junction box (behind lower left side of dash)
Ctrl set lamp
For c212) s223
From pcm a power relay (diagram 1 of 4)
Fuel heater
Fuel heater relay
Fuel pump (near left side of trans- mission)
Fuel pump relay
Fuse 10a
Fuse 20a
Fuse 30a
G100
Glow plugs
Glw plg 1
Glw plg 2
Glw plg 3
Glw plg 4
Glw plg 5
Glw plg 6
Glw plg 7
Glw plg 8
Hot at all times
Hot in run or start
Inertia fuel shut off switch (behind right side of dash)
Instrument cluster
Left valve cover assembly
Manifold absolute pressure (map) sensor (at right side of firewall)
Nca
Pcm
Power in
Red
Right valve cover assembly
S147
S162
S170
S193
S213
S250
S271
Speed
Trol sensor & fuel charge harn, at break- out for top left side of engine)

6.0L Diesel, Engine Performance Wiring Diagram (3 of 5) for Ford F550 Super Duty 2003

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List of elements for 6.0L Diesel, Engine Performance Wiring Diagram (3 of 5) for Ford F550 Super Duty 2003:

(mounted on rear of left valve cover) injector driver module (idm)
C1388a
C1388b
C270g
Central junction box (behind lower left side
Fuel inj 1 gnd
Fuel inj 1 pwr
Fuel inj 2 gnd
Fuel inj 2 pwr
Fuel inj 3 gnd
Fuel inj 3 pwr
Fuel inj 4 gnd
Fuel inj 4 pwr
Fuel inj 5 gnd
Fuel inj 5 pwr
Fuel inj 6 gnd
Fuel inj 6 pwr
Fuel inj 7 gnd
Fuel inj 7 pwr
Fuel inj 8 gnd
Fuel inj 8 pwr
Fuel injector 1
Fuel injector 2
Fuel injector 3
Fuel injector 4
Fuel injector 5
Fuel injector 6
Fuel injector 7
Fuel injector 8
Fuse 10a
G110 (at top left side of engine)
Hot at all times
Nca
Red red
S194

6.0L Diesel, Engine Performance Wiring Diagram (4 of 5) for Ford F550 Super Duty 2003

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List of elements for 6.0L Diesel, Engine Performance Wiring Diagram (4 of 5) for Ford F550 Super Duty 2003:

(a/t)
(at left side of engine compt) g101
(epc) sol 1 ctrl
(epc) sol 2 ctrl
(epc) sol 3 ctrl
(epc) sol 4 ctrl
(epc) sol 5 ctrl
(epc) sol common
(idm) pwr rly ctrl
(in backup light switch to rear light feed harness, in breakout to transmission)
(in engine control sensor & fuel charge harn, near breakout for left side of engine compt) s196
(iss) sens in
(on left fender, near battery)
(oss) sens in
(tcc) sol ctrl
(tcil) ctrl
(tft) sens
(tft) sens in
(tss) sens in
(w/ elec- tronic shift on the fly)
Automatic transmission 5r110
Auxiliary relay box 5 (at left rear side of engine compt)
C1381b
C1388c
Can bus 2h
Can bus 2l
Commumincation
Cylinder id
Drain wire
Exterior lights system
Fuel del com
Fuse 15a
Injector driver module (idm) (mounted on rear of left valve cover)
Line press sol
Logic pwr
Neutral sw sen
Powertrain control module (pcm)
Pressure control solenoid
Pressure sw 1 in
Pressure sw 2 in
Pressure sw 3 in
Pressure sw 4 in
Pressure sw 5 in
Pwr gnd
Pwr in
Red
Red red
Ref volt
Rev lmp rly ctrl
Rly ctrl bat feed
S129
S195
Sig rtn
Tran range sens
Transmission fluid temperature sensor
Transmission range sensor (trs)

6.0L Diesel, Engine Performance Wiring Diagram (5 of 5) for Ford F550 Super Duty 2003

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List of elements for 6.0L Diesel, Engine Performance Wiring Diagram (5 of 5) for Ford F550 Super Duty 2003:

(act) sens in
(ckp) sens +
(ckp) sens -
(cmp) sens +
(cmp) sens -
(ebp) sens sig
(eot) sens in
(icp) sens sig
(idm) comm
(idm) cyl id
(idm) fuel del
(in engine con- trol sensor & fuel charge harn, at break- out for intake system)
(in engine control sensor & fuel charge harn, at breakout for left side of engine compt)
(ipr) ctrl
(on throttle body) electronic throttle control motor
(on top of transmission extension housing) output shaft speed (oss) sensor
Air charge temperature (act) sensor (center front of engine, in intake system)
C1381c
C281b
Camshaft position (cmp) sensor
Can bus 2h
Can bus 2l
Charge monitor
Cool temp sens
Cooling fans system
Crankshaft position (ckp) sensor
Egr thrtl act
Egr thrtl pos
Egr val pos sen
Egr valve act
Egr valve actuator (at top of engine)
Elec fan cltch
Engine coolant temperature (ect) sensor
Engine oil temperature (eot) sensor
Exhaust back pressure sensor
Fan sig rtn
Fan spd sig
Four- wheel drive control module (behind right side of dash)
Glow plug sys
Gnd drain wire
Injection control pressure (icp) sensor
Injection pressure regulator
Intermediate shaft
Nca
Powertrain control module (pcm) (on left fender, near battery)
Red
Ref volt
S127 (in back-up light switch to rear light feed harn, near breakout for vehicle underbody)
S128
S190
S192
S197
Sig rtn
Speed sensor
Speed sensor assembly
Starting/ charging system
Throttle position (tps) sensor
Turbine shaft speed sensor
Turbo vane ctrl
Variable geometric turbo actuator

6.8L

6.8L, Engine Performance Wiring Diagram (1 of 4) for Ford F550 Super Duty 2003

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List of elements for 6.8L, Engine Performance Wiring Diagram (1 of 4) for Ford F550 Super Duty 2003:

(at left rear side of engine compt)
(in engine control sensor & fuel charge harn, near breakout for right cylinder head)
(in left front footwell)
(in main harn, near breakout for data link connector)
(on rear of right cyl head) ignition transformer capacitor 2
A/c press sw
A/c system
Acc
Anti-theft system
C270a
Case gnd
Ccs
Central junction box (behind lower left side of dash)
Ckp(+)
Ckp(-)
Coil on plug
Cust acc 1
Customer access
Data link (+)
Data link (-)
Data link connector (dlc) (behind left side of dash)
Data output
Digital transmission range (dtr) sensor (on left side of transmission)
Egr sol
Eprom pwr
Fuel inj 10
Fuel pump mon
Fuse 10a
Fuse 20a
Fuse 30a
G100
G101 (left side of eng compt)
G300
Hego 12
Hot at all times
Hot in run or start
Iat
Ign coil 1
Ign coil 10
Ign coil 5
Ign coil 6
Ignition transformer capacitor 1
Knock sensor
Lock
Maf
Nca
Not used
O/d off ind
Off
Overdrive cancel switch (a/t)
Overhead console
Pcm power diode
Pcm power relay
Powertrain control module (pcm) (on left side of firewall)
Pwr gnd
R n
Red
Run
S106
S130 (in engine control sensor & fuel charge harn, near breakout for left cylinder head)
S135
S162
S172
S258
S271
S284
S286
Shift sol 1
Shift sol 2
Start
Tcs
Tft
To dtr sensor (diagram 4 of 4)
To fuel pump relay (diagram 2 of 4)
Tr1
Tr2
Tr4
Trans ctrl ind
Transmission control switch
Vss (-)

6.8L, Engine Performance Wiring Diagram (2 of 4) for Ford F550 Super Duty 2003

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List of elements for 6.8L, Engine Performance Wiring Diagram (2 of 4) for Ford F550 Super Duty 2003:

(at vehicle under body, chassis left side member) g400
(behind right kick panel) inertia fuel shut-off switch
(in engine control harn, near breakout for left side of engine compt)
(part of fuel tank assembly) fuel tank unit
C2207
C270a
C270f
C270h
C282
C4033
C433
California
Central junction box (behind lower left side of dash)
Crankshaft position (ckp) sensor (on lower front center of engine)
Crankshaft position sensor shield
Except pickup
Federal
From pcm power relay (diagram 1 of 4)
Fuel pump relay
Fuel tank unit (california) (at fuel tank)
Fuse 20a
G101 (at left side of engine compt)
Hot at all times
Instrument cluster system
Nca
Pickup
Red
Red/pnk
S123
S145
S161
S167
S170 (california) (in engine control harn, near break- out for left rear side of engine compt)
S401
Throttle position (tp) sensor (on throttle body)

6.8L, Engine Performance Wiring Diagram (3 of 4) for Ford F550 Super Duty 2003

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List of elements for 6.8L, Engine Performance Wiring Diagram (3 of 4) for Ford F550 Super Duty 2003:

(in back-up light switch to rear light feed harn, near breakout for left side of transmission)
(in engine control harn, near breakout for g100)
(on right rear of engine compt)
A/c system
A/t
Automatic transmission control module (on left side of transmission)
Coast clutch solenoid
Electronic pressure controller
Fuel injectors
Idle air control (iac) valve (on throttle body assembly)
M/t
Output shaft speed (oss) sensor (on top of transmission extension housing)
Red
Red/pnk
S122
S131 (in engine control sensor & fuel charge harn, near breakout for engine right cylinder head)
S136 (in engine control sensor & fuel charge harn, near breakout for engine right cylinder head)
S138
S139
Shift solenoid 1
Shift solenoid 2
Tan
Tan/ red
Tan/red
Torque converter clutch solenoid
Transmission fluid temperature sensor
Turbine shaft speed (tss) sensor (on top of transmission, at converter housing)
Vapor management valve

6.8L, Engine Performance Wiring Diagram (4 of 4) for Ford F550 Super Duty 2003

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List of elements for 6.8L, Engine Performance Wiring Diagram (4 of 4) for Ford F550 Super Duty 2003:

(a/t)
(calif)
(engine harn, near breakout at left side of engine compt, near brake pressure switch)
(in engine control harn, near break- out for g101)
(in engine control harn, near breakout for g101)
(in engine control sensor & fuel charge harn, near breakout for front of engine compt)
(in left rear side of engine compt) (california) evap canister vent control solenoid
(in tail lamps harn, near breakout for c311)
(on right cylinder head) cylinder head temperature (cht) sensor
(on right exhaust manifold)
(right side of engine compt) speed control servo
5v ref volt
A/c cltch rly
A/c system
A/t
Anti-lock brakes system
Bpp sw
Brake pedal position (bpp) switch (behind left side of dash, above brake pedal)
C270a
C270g
Cam pos in
Camshaft position (cmp) sensor (on front of left cyl head)
Canister vent
Central junction box (behind lower left side of dash)
Cyl head temp
Digital transmission range (dtr) sensor (on left side of transmission)
Dpfe sens
Epc sol
Evap purge
From dtr sensor (diagram 1 of 4)
Fuel inj 1
Fuel inj 2
Fuel inj 3
Fuel inj 4
Fuel inj 5
Fuel inj 6
Fuel inj 8
Fuel inj 9
Fuel pump ctrl
Fuel tank press
Fuse 10a
G101 (left side of engine compt)
G300 (in left front footwell)
Heated oxygen sensor (ho2s) 11
Heated oxygen sensor (ho2s) 12 (california) (rear of catalytic converter)
Heated oxygen sensor (ho2s) 21 (on left exhaust manifold)
Heater ctrl
Hego 11
Hego 12
Hego 21
Hot at all times
Iac sol
Ign coil 3
Ign coil 4
Ign coil 7
Ign coil 8
Ign coil 9
Kap b(+)
Knock sensor
Knock sensor (on left cyl head)
M/t
Maf sens in
Mass airflow (maf) sensor (in left front of engine compt)
Nca
Not used
Oss
Powertrain control module (pcm) (on left side of firewall)
Pwr gnd
Red
Red/pnk
S106
S114
S115
S132
S134
S228
S343
Side ex- haust system)
Sig return
Tan
Tan/red
Tcc sol
Tp sens in
Tr3a (a/t) cpp (m/t)
Tss
Vpwr
Vss (+)
Vss input

7.3L DI TURBO DIESEL

7.3L DI Turbo Diesel, Engine Performance Wiring Diagram, California (1 of 4) for Ford F550 Super Duty 2003

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List of elements for 7.3L DI Turbo Diesel, Engine Performance Wiring Diagram, California (1 of 4) for Ford F550 Super Duty 2003:

(a/t)
(behind left side of dash)
(in engine control harn, near break- out for c144)
(in engine control harn, near break- out for g100) s123
(in main harn, near breakout for data link connector)
(m/t)
(not used)
A/c head press
A/c system
Acc
Auxiliary powertrain control module (apcm) (pickup) (behind left side of dash)
Brake press sw
Brake pressure switch (on left side of engine compt)
Brake warning
Bus (+)
Bus (-)
Cam pos sens
Ccs sol
Central junction box (behind lower left side of dash)
Cpp (m/t)
Customer access
Dash)
Data link connector (dlc)
Data output link
Diesel fuel pump motor (below vehicle, near fuel tank)
Digital transmission range (dtr) sensor (on left side of transmission)
Dsl elect drv
Dtr-tr1
Dtr-tr2
Dtr-tr4
Ebp sens
Eot
Epr
Excursion
Exhaust pressure regulator (epr) (on top center of engine)
Fuel htr
Fuel pump pwr
Fuse 20a
Fuse 30a
G100 (at left rear side of engine compt)
G100 (left rear side of engine compt)
G101 (left side of engine compt)
Gen pwr sw
Gen scan tool in
Gpcm
Hot at all times
Iat
Idle validation
Ignition switch
Inertia fuel shutoff (ifs) switch (behind right side of dash)
Injector driver module power relay
Lock
Low current sens
Nca
Not used
Off
Overhead console system
Passive anti- theft system transceiver module (excursion) (behind left center of dash)
Pcm power diode
Pcm power relay
Pickup
Powertrain control module (pcm) (on left side of firewall)
Pwr gnd
R n
Red
Run
S106
S141
S154
S162
S217
S250
S258
S260 (in main harn, near break- out for c264)
S284
S286
Speed ctrl ind
Speed/tach gnd
Ss1
Ss2
Start
Starting/charging system (w/ dual generators)
Tcil
Tcs (a/t)
Tft
To dtr sensor (diagram 4 of 4)
To fuel pump relay (diagram 2 of 4)
Tp sens
Wastegate control solenoid (at top rear of engine compt)
Water in fuel sensor (at top right side of engine)
Wcs sol

7.3L DI Turbo Diesel, Engine Performance Wiring Diagram, California (2 of 4) for Ford F550 Super Duty 2003

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List of elements for 7.3L DI Turbo Diesel, Engine Performance Wiring Diagram, California (2 of 4) for Ford F550 Super Duty 2003:

(at top front of engine) glow plug control module (gpcm)
A/t
C1273a
C1273b
C270a
C270f
Central junction box (behind lower left side of dash)
Clutch pedal position (cpp) switch (m/t) (above clutch pedal)
Cntl out
Engine coolant temperature (ect) sensor (on front of engine)
From pcm a power relay (diagram 1 of 4)
Fuel pump relay
Fuse 10a
Fuse 20a
Glow plugs
Glw plg 1
Glw plg 2
Glw plg 3
Glw plg 4
Glw plg 5
Glw plg 6
Glw plg 7
Glw plg 8
Gpcm
Hot at all times
Hot in run or start
Instrument cluster
Instrument cluster system
M/t
Nca
O/d off ind
Overdrive cancel switch
Park brake switch (on park brake assembly)
Power in
Red
S126
S147
S271
S278 (in main harn, at breakout for instru- ment cluster)
Speed control set lamp c220c
Tcs

7.3L DI Turbo Diesel, Engine Performance Wiring Diagram, California (3 of 4) for Ford F550 Super Duty 2003

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List of elements for 7.3L DI Turbo Diesel, Engine Performance Wiring Diagram, California (3 of 4) for Ford F550 Super Duty 2003:

(in back-up light switch to rear feed harn, near breakout for left side of transmission)
(in left side of engine compt) injector driver module (idm)
Accelerator pedal position sensor (on accelerator pedal support)
Automatic transmission module
Cid sig in
Coast clutch solenoid
Electronic pressure control solenoid
Engine oil temperature (eot) sensor (on top front of engine)
Feedback
Fuel inj 1
Fuel inj 2
Fuel inj 3
Fuel inj 4
Fuel inj 5
Fuel inj 6
Fuel inj 7
Fuel inj 8
Fuel injectors
Fuel sig
G101 (left side of engine compt)
Inj feed
Intake air temperature sensor (left side of engine compt, behind air cleaner)
Nca
Output shaft speed (oss) sensor (on top of transmission extension housing)
Pwr gnd
Pwr in
Red
S138
S139
Shield
Shift solenoid
Sig rtn
Tan
Tan/red
Torque converter clutch solenoid
Transmission fluid temperature sensor
Turbine shaft speed (tss) sensor (on top of transmission, at converter housing)

7.3L DI Turbo Diesel, Engine Performance Wiring Diagram, California (4 of 4) for Ford F550 Super Duty 2003

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List of elements for 7.3L DI Turbo Diesel, Engine Performance Wiring Diagram, California (4 of 4) for Ford F550 Super Duty 2003:

(at left side of engine compt) anti-lock brake system (abs) module
(in engine control harn, near breakout for g101)
(in engine control harn, near breakout for left rear side of engine compt)
(in engine control sensor & fuel charge harn, near breakout for rear of engine compt)
(in engine control sensor & fuel charge harn, near breakout for right side of engine) s1001
(not used)
Accl pos sens
Act sens
Air charge temperature (act) sensor (center front of engine, in intake system)
Air intake heater
Bpp sw
Brake pedal position (bpp) switch (behind left side of dash, above brake pedal)
C270a
C270g
Camshaft position (cmp) sensor (on lower front center of engine)
Central junction box (behind lower left side of dash)
Charge ind
Cid sig
Cmp rtn
Cruise control system
Customer access
Digital transmission range (dtr) sensor (on left side of transmission)
Dtr-tr3a
Epc sol
Exhaust back pressure (ebp) sensor (on right rear of engine)
From dtr sensor (diagram 1 of 4)
Fuel deliv sig
Fuel pump rly
Fuse 10a
G102 (at right side of engine)
G111 (at top of engine
G300 (left front footwell)
Gen pwr
Glow plug ctrl
Hot at all times
Icp sens
Idm enable out
Injection control pressure (icp) sensor (on top left side of engine, right of alternator)
Injection pressure (ipr) regulator (on top center of engine)
Ipr sens
Manifold absolute pressure (map) sensor (on right side of firewall)
Manifold intake air heater relay (at top right side of engine)
Map sens
Oss sens
Pcm to relay
Pickup
Powertrain control module (pcm) (on left side of firewall)
Pwr
Pwr gnd
Pwr in
Red
S106
S114
S115 (in engine control harn, near breakout for g101)
S151
S153
S170
S228
Sig rtn
Speed ctrl sw
Starting/ charging system
Starting/ charging system (w/ dual generators)
Take off pwr in
Tcc
Tss sens
Vref
Vss (+)
Vss out

7.3L DI Turbo Diesel, Engine Performance Wiring Diagram, Federal (1 of 4) for Ford F550 Super Duty 2003

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List of elements for 7.3L DI Turbo Diesel, Engine Performance Wiring Diagram, Federal (1 of 4) for Ford F550 Super Duty 2003:

(a/t)
(behind center of dash)
(in engine control harn, near break- out for c144)
(in engine control harn, near break- out for g100) s123
(in main harn, near breakout for data link connector)
(m/t)
A/c head press
A/c system
Acc
Auxiliary powertrain control module (apcm) (pickup) (behind left side of dash)
Brake press sw
Brake pressure switch (on left side of engine compt)
Brake warning
Bus (+)
Bus (-)
Cam pos sens
Ccs sol
Central junction box (behind lower left side of dash)
Cpp (m/t)
Customer access
Dash)
Data link connector (dlc)
Data output link
Diesel fuel pump motor (below vehicle, near fuel tank)
Digital transmission range (dtr) sensor (on left side of transmission)
Dsl elect drv
Dtr-tr1
Dtr-tr2
Dtr-tr4
Ebp sens
Eot
Epr
Excursion
Exhaust pressure regulator (epr) (on top center of engine)
Fuel htr
Fuel pump pwr
Fuse 20a
Fuse 30a
G100 (at left rear side of engine compt)
G100 (left rear side of engine compt)
G101 (left side of engine compt)
Gen pwr sw
Gen scan tool in
Glow plug mon
Hot at all times
Iat
Idle validation
Ignition switch
Inertia fuel shutoff (ifs) switch (behind right side of dash)
Injector driver module power relay
Lock
Low current sens
Nca
Not used
Off
Overhead console system
Passive anti- theft system transceiver module (excursion) (behind left center of dash)
Pcm power diode
Pcm power relay
Pickup
Powertrain control module (pcm) (on left side of firewall)
Pwr gnd
R n
Red
Run
S106
S141
S154
S162
S217
S250
S258
S284
S286
Speed ctrl ind
Speed/tach gnd
Ss1
Ss2
Start
Starting/charging system (w/ dual generators)
Tcil
Tcs (a/t)
Tft
To dtr sensor (diagram 4 of 4)
To fuel pump relay (diagram 2 of 4)
Tp sens
Wastegate control solenoid (at top rear of engine compt)
Water in fuel sensor (at top right side of engine)
Wcs sol

7.3L DI Turbo Diesel, Engine Performance Wiring Diagram, Federal (2 of 4) for Ford F550 Super Duty 2003

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List of elements for 7.3L DI Turbo Diesel, Engine Performance Wiring Diagram, Federal (2 of 4) for Ford F550 Super Duty 2003:

(in engine control sensor & fuel charge harn, near breakout for right side of engine) s1001
A/t
C1279
C1280
C270a
C270f
Central junction box (behind lower left side of dash)
Clutch pedal position (cpp) switch (m/t) (above clutch pedal)
Engine coolant temperature (ect) sensor (on front of engine)
From pcm a power relay (diagram 1 of 4)
Fuel pump relay
Fuse 10a
Fuse 20a
G111 (at top of engine)
Glow plug relay (at top of engine)
Glow plugs
Hot at all times
Hot in run or start
Injector pressure sensor (on top center of engine)
Instrument cluster
Instrument cluster system
M/t
Manifold intake air heater 58 amp
Manifold intake air heater relay (at top right side of engine)
Nca
O/d off ind
Overdrive cancel switch
Park brake switch (on park brake assembly)
Red
S126
S150
S271
S278 (in main harn, at breakout for instru- ment cluster)
Speed control set lamp c270c
Tcs

7.3L DI Turbo Diesel, Engine Performance Wiring Diagram, Federal (3 of 4) for Ford F550 Super Duty 2003

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List of elements for 7.3L DI Turbo Diesel, Engine Performance Wiring Diagram, Federal (3 of 4) for Ford F550 Super Duty 2003:

(in back-up light switch to rear feed harn, near breakout for left side of transmission)
(in left side of engine compt) injector driver module (idm)
Accelerator pedal position sensor (on accelerator pedal support)
Automatic transmission module
Cid sig in
Coast clutch solenoid
Electronic pressure control solenoid
Engine oil temperature (eot) sensor (on top front of engine)
Feedback
Fuel inj 1
Fuel inj 2
Fuel inj 3
Fuel inj 4
Fuel inj 5
Fuel inj 6
Fuel inj 7
Fuel inj 8
Fuel injectors
Fuel sig
G101 (left side of engine compt)
Inj feed
Intake air temperature sensor (left side of engine compt, behind air cleaner)
Nca
Output shaft speed (oss) sensor (on top of transmission extension housing)
Pwr gnd
Pwr in
Red
S138
S139
Shield
Shift solenoid
Sig rtn
Tan
Tan/red
Torque converter clutch solenoid
Transmission fluid temperature sensor
Turbine shaft speed (tss) sensor (on top of transmission, at converter housing)

7.3L DI Turbo Diesel, Engine Performance Wiring Diagram, Federal (4 of 4) for Ford F550 Super Duty 2003

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List of elements for 7.3L DI Turbo Diesel, Engine Performance Wiring Diagram, Federal (4 of 4) for Ford F550 Super Duty 2003:

(in engine control harn, near breakout for g101)
(in engine control harn, near breakout for left rear side of engine compt)
(in engine control sensor & fuel charge harn, near breakout for rear of engine compt)
(in left front of engine compt) anti-lock brake system (abs) module
(not used)
Accl pos sens
Act sens
Air charge temperature (act) sensor (center front of engine, in intake system)
Bpp sw
Brake pedal position (bpp) switch (behind left side of dash, above brake pedal)
C135
C270a
C270g
Camshaft position (cmp) sensor (on lower front center of engine)
Central junction box (behind lower left side of dash)
Charge ind
Cid sig
Cmp rtn
Cruise control system
Customer access
Digital transmission range (dtr) sensor (on left side of transmission)
Dtr-tr3a
Epc sol
Exhaust back pressure (ebp) sensor (on right rear of engine)
From dtr sensor (diagram 1 of 4)
Fuel deliv sig
Fuel pump rly
Fuse 10a
G102 (at right side of engine)
G300 (left front footwell)
Gen pwr
Glow plug ctrl
Hot at all times
Icp sens
Idm enable out
Injection control pressure (icp) sensor (on top left side of engine, right of alternator)
Ipr sens
Manifold absolute pressure (map) sensor (on right side of firewall)
Map sens
Not used
Oss sens
Pcm to relay
Pickup
Powertrain control module (pcm) (on left side of firewall)
Pwr
Pwr gnd
Pwr in
Red
S106
S114
S115 (engine harn, near breakout at left side of steering column)
S151
S153
S170
S228
Sig rtn
Speed ctrl sw
Starting/ charging system (w/ dual generators)
Take off pwr in
Tcc
Tss sens
Vref
Vss (+)
Vss out

EXTERIOR LIGHTS

Back-up Lamps Wiring Diagram for Ford F550 Super Duty 2003

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List of elements for Back-up Lamps Wiring Diagram for Ford F550 Super Duty 2003:

(w/o dual rear wheels)
4 speed a/t
5 speed a/t
C1381b
C270f
C270g
C270h
C270j
Central junction box (behind lower left side of dash)
Chassis cab,
Digital transmission range (dtr) sensor (on left side of transmission)
Exterior lamps
Fuse 15a
G400 (at vehicle under body, chassis left side member)
Hot at all times
Hot in run
Left reversing lamp
M/t
Near breakout for left reversing light) s426
Parking aid module (at right ``a" pillar)
Pcm power relay
Powertrain control module (on left side of firewall)
Reversing lamp relay
Reversing lamp switch (on top left side of transmission)
Reversing lamp trailer tow relay
Right reversing lamp
S124
S319 (near breakout for parking aid module)
S357 (in body main harness, at breakout for c300)
S404
S404 s402 (w/ dual rear wheels)
W/ box
W/o box

Exterior Lamps Wiring Diagram (1 of 2) for Ford F550 Super Duty 2003

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List of elements for Exterior Lamps Wiring Diagram (1 of 2) for Ford F550 Super Duty 2003:

(6.0l:in main harness near breakout to ignition switch) (except 6.0l: in main harness, near breakout to brake pedal position switch)
(at left "c" pillar) g900
(at left rear side of engine compartment) g100
(crew cab)
(except 6.0l: near breakout to brake pedal position switch) (6.0l:near breakout to ignition switch)
(except crew cab)
(except lariat) s904
(in roof marker lamp jumper harness, near breakout for center roof marker light) s921
(near breakout to brake pedal position switch) s240
(near breakout to ignition switch)
(not used)
Auto
Auxiliary relay box 1 (behind dash panel, to left of glove box near center of dash)
Brake pedal position (bpp) switch (behind left side of dash, above brake pedal)
C202a
C202b
C205a
C2113b
C220a
C220c
C270a
C270b
Center
Central junction box (behind lower left side of dash)
Driver side exterior rear view mirror
Except lariat
Fuse 15a
Fuse 20a
Fuse 30a
G108 (at right side of engine compt)
G201 (behind left side of dash)
G202 (behind left side of dash)
G400 (at vehicle under body, chassis left side member)
G900 (at left "c" pillar)
Hazard switch
Head
High mounted stoplamp
Hot at all times
Hot in run
Indicator flasher relay 87a
Instrument cluster
Interior lights system
Lariat
Late production
Left
Left center
Left front park/turn lamp
Left front side lamp
Left rear park/stop/ turn lamp
Left tail lamps
Left turn indicator
Main light switch
Microprocessor
Multifunction switch
Nca
Off
Park
Park lamp relay
Passenger side exterior rear view mirror
Right
Right center
Right front park/turn lamp
Right front side lamp
Right rear park/stop/ turn lamp
Right tail lamps
Right turn indicator
Roof marker lamps
S102
S104 (in engine control control harness, near breakout for c192)
S105 (near breakout for c144)
S107 (near breakout for c192)
S180
S206
S207
S211
S212
S214
S215 (near breakout to main light switch)
S217
S249
S272
S300
S402
S404
S501
S639
S920 (lariat)
Switch)
Turn switch
Vehicle security module (behind left side of dash)
W/ box
W/o box

Exterior Lamps Wiring Diagram (2 of 2) for Ford F550 Super Duty 2003

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List of elements for Exterior Lamps Wiring Diagram (2 of 2) for Ford F550 Super Duty 2003:

(6.0l)
(at left rear side of engine compartment)
(at left rear side of engine compt)
(f450 pickup w/box: near breakout for left license plate light) (except f450 pickup w/box:
(f450 pickup w/box: near breakout for right rear park/ stop/turn light) (except f450 pickup w/box: near breakout for c438)
(in trailer lamp feed harness, near breakout for c410)
(near breakout for c408)
(near breakout for c410)
(near breakout for c410) s434
(near breakout for c465)
(not used)
(wire end)
6.0l
Auxiliary relay box 4 (except 6.0l) (at left rear side of engine compartment)
Auxiliary relay box 5 (at left rear side of engine compt)
Back-up lamps circuit
C270b
C270f
C270h
C270j
C270k
Center rear marker lamp
Central junction box (behind lower left side of dash)
Except 6.0l
F450 w/ box
Fuse 20a
G100
G400 (at vehicle under body, chassis left side member)
Hot at all times
Hot in run
Left license plate lamp
Left rear marker lamp
Left rear park/stop/ turn lamp
Left rear side lamp 1
Left rear side lamp 2
Left tail lamps
Left turn trailer tow relay
Nca
Near breakout for g400) s406
Pickup w/o box
Pickups w/o box
Right license plate lamp
Right rear marker lamp
Right rear park/stop/ turn lamp
Right rear side lamp 1
Right rear side lamp 2
Right tail lamps
Right turn trailer tow relay
S103
S103 (at breakout for auxiliary relay box 4)
S162
S265 (near breakout for g300)
S401
S402
S404
S407
S417
S417 (near breakout for c408)
S418 (near breakout for c465)
S426 (near breakout to emergency flasher relay block)
S430
S431
S432
S433
S460 (in rear window defrost harness)
S461
S463
Trailer tow battery charge relay
Trailer tow connector (4 pin)
Trailer tow connector (7 pin)
Trailer tow parking lamp relay
Trailer tow reversing lamp relay
W/ dual rear wheels
W/ rear bumper
W/o dual rear wheels
W/o rear bumper

GROUND DISTRIBUTION

Ground Distribution Wiring Diagram (1 of 4) for Ford F550 Super Duty 2003

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List of elements for Ground Distribution Wiring Diagram (1 of 4) for Ford F550 Super Duty 2003:

(6.0l)
(6.0l) a/c clutch solenoid
(6.0l) dual pressure switch
(6.0l) fuel heater
(6.0l) fuel heater relay
(6.0l) injector driver module (idm)
(6.0l) powertrain control module (pcm)
(7.3l) injector driver module (idm)
(a/t: at breakout for c1010)
(behind lower left side of dash) central junction box (cjb)
(diesel) exhaust pressure regulator (epr)
(exc 6.0l)
(exc 6.0l) powertrain control module (pcm)
(exc 7.3l) mass air flow (maf) sensor
(left rear side of engine compartment) auxiliary relay box 2
(left rear side of engine compartment) auxiliary relay box 3
(left rear side of engine compt) (6.0l) auxiliary relay box 5
(left rear side of engine compt) (except 6.0l) auxiliary relay box 4
(m/t: at breakout for left auxiliary relay box no.3)
(near breakout for injector driver module)
5.4l, 6.8l
5.4l, 6.8l, 7.3l
6.0l
7.3l
87a
A/c compressor clutch diode
Abs control module
Air filter sensor
Air suspension compressor assembly
Air suspension module
Air tank moisture removal valve
Air tank valve
Battery
Battery 2
Battery charge trailer tow relay
Brake fluid level switch
C1381a
C1388c
C270f
C270h
C290a
Control harness, near breakout for left headlight)
Crankshaft position shield
Data link connector (dlc)
Daytime running lamps (drl) relay 1
Daytime running lamps (drl) relay 2
Engine compartment lamp
Fuel pump
G100 (left rear side of engine compt)
G101 (left side of eng compt)
G102 (right side of engine)
G104 (in engine compt, at right fender)
G105 (left front side of engine compt)
G106 (right frame rail, in engine compt)
G109 (left side of engine)
G200 (behind left side of dash)
Left front fog lamp
Left front park/ turn lamp
Left front side lamp
Left headlamp
Left rear shock absorber solenoid valve
Left turn trailer tow relay
Nca
Near breakout for g100)
Parking lamp trailer tow relay
Pcm power diode
Pcm power relay
Powertrain control module (pcm)
Radio
Reversing lamp trailer tow relay
Right front fog lamp
Right rear shock absorber solenoid valve
Right turn trailer tow relay
S102 (in engine control harness, near breakout for g101)
S106 (in engine control harness, near breakout for powertrain control module)
S145 (near breakout for c110)
S161 (near breakout for c110)
S167
S195
S250
S380 (in air suspension pressure indicator switch harness, near breakout for air tank moisture removal valve)
Starter relay
Transfer case high to low
Transfer case low to high
Windshield wiper motor

Ground Distribution Wiring Diagram (2 of 4) for Ford F550 Super Duty 2003

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List of elements for Ground Distribution Wiring Diagram (2 of 4) for Ford F550 Super Duty 2003:

(6.0l, 7.3l) auxiliary powertrain control module (apcm)
(behind dash panel, to left of glove box near center of dash) auxiliary relay box 1
(behind lower left side of dash) central junction box (cjb)
(w/ roof opening panel) over head console
5.4l, 6.8l
6.0l, 7.3l
A/c clutch solenoid
Adjustable pedal switch
Air bag sliding contact
Air suspension kneeling switch
Ambient air temperature sensor
Brake pedal position switch
Brake shift interlock
C202b
C205a
C205b
C220c
C270a
C281a
C290a
C294a
C294b
C294c
Center roof marker lamp
Data link connector (dlc)
Except lariat
Four- wheel drive control module
Four- wheel drive switch
Front cigar lighter
Front function selector switch assembly
Front heater blower motor resistor
Fuel tank selector switch
G108 (right side of engine compt)
G201 (behind left side of dash)
G202 (behind left side of dash)
G300 (on vehicle floor, in left front footwell)
Glove box lamp
Harness, near breakout for g108)
Horn
Indicator flasher relay
Instrument cluster
Instrument panel power point
Lariat
Left center roof marker lamp
Left roof marker lamp
Left vanity mirror lamp
Main light switch
Multi-function switch
Nca
Near breakout for instrument cluster)
Others w/ roof opening panel
Overhead console
Parking aid disable switch
Powertrain control module (pcm)
Radio
Rear window defrost relay
Right center roof marker lamp
Right front park/ turn lamp
Right front side lamp
Right headlamp
Right roof marker lamp
Right vanity mirror lamp
S172 (in engine control harness, near breakout for left front wheel speed sensor)
S217 (in main harness, near breakout for instrument cluster)
S218 (in main harness, near breakout for instrument cluster)
S257 (in main harness, near breakout to temperature blend door actuator)
S290 (in main harness, near breakout to radio)
S904
S920 (in roof marker lamp jumper harness, near breakout for right roof marker light)
Speed control servo
Steering wheel/ speed control switch
Sunload sensor
Temperature blend door actuator
Vacuum pump motor
W/ auxiliary fuel tank
Windshield washer pump motor
Windshield wiper motor
Wire end

Ground Distribution Wiring Diagram (3 of 4) for Ford F550 Super Duty 2003

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List of elements for Ground Distribution Wiring Diagram (3 of 4) for Ford F550 Super Duty 2003:

(california)
(federal)
(in air suspension pressure indicator switch harness, near breakout for air tank moisture removal valve) s380
(in rear lamp connector harness, near breakout for c408) s404
(not used)
(vehicle under body, chassis left side member) g400
4-pin trailer tow connector
7-pin trailer tow connector
Center rear marker lamp
Chassis cab
Connector harness, near breakout for c408)
Defrost harness)
Except chassis cab
F450 pickup w/ box
Fuel tank unit
G203 (uner right side of dash)
G400 (vehicle under body, chassis left side member)
Harness, near breakout for c410)
Left front running board lamp
Left license plate lamp
Left rear marker lamp
Left rear park/ stop/ turn lamp
Left rear park/stop turn lamp
Left rear park/stop/ turn lamp
Left rear running board lamp
Left rear side lamp 1
Left rear side lamp 2
Left reversing lamp
Left tail lamps
Nca
Passenger air bag deactivation (pad) switch
Pickups w/ box
Pickups w/o box
Restraints control module
Right front running board lamp
Right license plate lamp
Right rear marker lamp
Right rear park/ stop/ turn lamp
Right rear park/stop turn lamp
Right rear park/stop/ turn lamp
Right rear running board lamp
Right rear side lamp 1
Right rear side lamp 2
Right reversing lamp
Right tail lamps
S402 (in rear lamp connector harness, near breakout for right rear park/ stop/turn light)
S461 (in rear window defrost harness)
S463 (in rear license plate lamp harness, near breakout for c465)
S463 (near breakout for c465)
Trailer tow connector truck bed
W/ dual rear wheels
W/ rear bumper
W/o dual rear wheels
W/o rear bumper

Ground Distribution Wiring Diagram (4 of 4) for Ford F550 Super Duty 2003

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List of elements for Ground Distribution Wiring Diagram (4 of 4) for Ford F550 Super Duty 2003:

(crew cab) rear interior/ map lamps assembly
(except super cab)
(in passenger-driver seat jumper harness, near breakout for passenger side seat heater switch)
(super cab)
(w/ power equipment) vehicle security module (vsm)
(w/ power equipment, except crew cab) driver side front door ajar switch
(w/memory: near breakout for c327) (w/ heated seats: near breakout for c3049) (w/o heated seats: near breakout for c3007) s306
C2113a
C504a
Crew cab
Driver side door lock switch
Driver side exterior rear view mirror
Driver side front door ajar switch
Driver side front heated seat module
Driver side front seat adjust switch
Driver side rear door ajar switch
Driver side seat heater switch
Except crew cab
Exterior rear view mirror switch
Front interior/ map lamps assembly
G900 (left "c" pillar)
High mounted stoplamp
Left front door entry lamp
Master window adjust switch
Nca
Parking aid module (pam)
Passenger side door lock switch
Passenger side exterior rear view mirror
Passenger side front door ajar switch
Passenger side front heated seat module
Passenger side front seat adjust switch
Passenger side rear door ajar switch
Passenger side seat heater switch
Right front door entry lamp
S233 (in body main harness, near grommet for right front door)
S300 (in body main harness, near breakout for g900)
S332 (in passenger- driver seat jumper harness, near breakout for driver safety belt buckle switch)
S335 (in passenger-driver seat jumper harness, near breakout for passenger side heated seat switch)
S501 (in body main harness, at breakout for driver side door lock switch)
Safety belt buckle switch
W/ heated seats
W/ power equipment
W/ power seats
W/ remote keyless entry
W/o heated seats
W/o power equipment
W/o power seats
W/o remote keyless entry
W/o remote keyless entry, crew cab

HEADLIGHTS

Headlights Wiring Diagram, with DRL for Ford F550 Super Duty 2003

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List of elements for Headlights Wiring Diagram, with DRL for Ford F550 Super Duty 2003:

(early production) s221
(except pickup & diesel excursion)
(excursion) (pickup)
(in fog jumper harness, near breakout for c1045) s100
(in main harness, at breakout for foglamp relay diode)
(in main harness, near breakout for restraints control module) s244
(late
(near breakout for g100)
(on vehicle floor, in left front footwell) g300 g201 (behind left side of dash)
(pickup & diesel excursion)
87a
Air conditioning system
Auto
Auxiliary relay box 2 (at left rear side of engine compt)
C202a
C205a
C2113b
C220c
C270a
C270b
C270f
C270g
C270h
Central junction box (behind lower left side of dash)
Central junction box (behind lower left side of dash)
Daytime running lamps (drl) relay 1
Daytime running lamps (drl) relay 2
Daytime running lamps resistor (on left front side of engine compt)
Diesel
Engine controls system
Fog
Fog lamp illumination
Fog lamp relay
Foglamp relay diode (early production) (behind left side of dash)
For c1047)
Fuse 10a
Fuse 15a
Fuse 30a
G100 (at left rear side of engine compt)
G108 (at right side of engine compt)
G202 (behind left side of dash)
Head
Headlamp relay
Hi-beam indicator
Hot at all times
Hot in run
Hot in start or run
Hot in start or run
Instrument cluster
Instrument cluster system
Left front fog lamp
Left headlamp
Main light switch
Microprocessor
Multi- function switch
Off
Park
Park brake relay
Parking brake switch (behind left side of dash, (on park brake assembly)
Pass
Production)
Right front fog lamp
Right headlamp
S101
S102
S113
S124
S180
S198
S201 s290
S203 (near breakout for instrument cluster)
S214
S217
S220 (early production)
S271
Sunload sensor (on top center of dash)
Tan/
Transmission system
Vehicle security module (behind left side of dash)

Headlights Wiring Diagram, without DRL for Ford F550 Super Duty 2003

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List of elements for Headlights Wiring Diagram, without DRL for Ford F550 Super Duty 2003:

(early production) s221
(excursion)
(excursion) (pickup)
(in fog jumper harness, near breakout for c1045) s100
(in main harness, at breakout for foglamp relay diode)
(in main harness, near breakout for restraints control module)
(late
(near breakout for g100)
(pickup)
Air conditioning system
Auto
C202a
C205a
C2113b
C220c
C270a
C270b
C270f
C270g
C270h
Central junction box (behind lower left side of dash)
Central junction box (behind lower left side of dash)
Fog
Fog lamp illumination
Fog lamp relay
Foglamp relay diode (early production) (behind left side of dash)
Fuse 10a
Fuse 15a
Fuse 30a
G100 (at left rear side of engine compt)
G108 (at right side of engine compt)
G201 (behind left side of dash)
G202 (behind left side of dash)
G300 (on vehicle floor, in left front footwell)
Head
Headlamp relay
Hi-beam indicator
Hot at all times
Hot in start or run
Instrument cluster
Left front fog lamp
Left headlamp
Main light switch
Microprocessor
Multi-function switch
Off
Park
Pass
Production)
Right front fog lamp
Right headlamp
S101
S102
S113
S180
S201 s290
S214
S217
S220 (early production)
S244
S271
Sunload sensor (on top center of dash)
Tan/
Vehicle security module (behind left side of dash)

HORN

Horn Wiring Diagram for Ford F550 Super Duty 2003

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List of elements for Horn Wiring Diagram for Ford F550 Super Duty 2003:

Air bag sliding contact
Air conditioning system
C2113b
C270a
C270h
Central junction box (behind lower left side of dash)
Diesel
Fuse 15a
G108 (at right side of engine compartment)
Gasoline
Horn
Horn relay
Hot at all times
Nca
Powertrain control module (on left side of firewall)
S114
S180
S252 (near breakout for air bag sliding contact)
Signal return
Speed control servo (in right side of engine compt)
Steering wheel/ speed control switch
Vehicle security module (vsm) (behind left side of dash)

INSTRUMENT CLUSTER

Instrument Cluster Wiring Diagram for Ford F550 Super Duty 2003

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List of elements for Instrument Cluster Wiring Diagram for Ford F550 Super Duty 2003:

(behind left side of dash, on park brake assembly) parking brake switch
(in taillamps harness, near breakout for fuel tank selector valve) s400
(on left side of firewall) powertrain control module (pcm)
6.0l except 6.0l
Air filter sensor (diesel) (on left side of engine compartment)
Anti-lock brake system
Anti-theft system
Battery saver relay
Brake fluid level switch (on brake fluid reservoir)
C1381a
C175
C205b
C220a
C220b
C220c
C270a
C270b
California
Central junction box (cjb) (behind lower left side of dash)
Computer data lines
Computer data lines system
Coolant temperature sensor 2 (diesel) (at top of engine, on water pump)
Defogger system
Diesel
Electronic suspension system
Except california
Excursion
Exterior lights system
Fuel tank selector switch
Fuel tank selector valve
Fuel tank unit
Fuse 10a
Fuse 15a
G100 (at left rear side of engine compartment)
G202 (behind left side of dash)
G300 (on vehicle floor, in left front footwell)
Gasoline
Headlights system
Hot at all times
Hot in run or acc
Hot in start or run
Illumination (6 bulbs)
Instrument cluster
Interior lamps relay
Interior lights system
Interior lights, power windows system
Keyless entry
Main light switch
Microprocessor
Nca
Oil pressure switch (5.4l, 6.8l: on left front of engine) (7.3l: on top center rear of engine)
Overhead console
Pickup
Powertrain control module (pcm) (on left side of firewall)
Primary fuel sender (on fuel tank)
S102
S201
S208 (in main harness, near breakout for c264)
S217
S254
S271
S278 (in main harness, at breakout for instrument cluster)
S298 (in main harness, at breakout for instrument cluster)
Secondary fuel sender (on fuel tank)
Speed control servo (in right side of engine compt)
Starting/charging system
Transmissions system
Trip computer module (on front center of roof)
W/ auxiliary fuel tank
W/ roof opening panel
W/o auxiliary fuel tank
W/o remote
W/o roof opening panel
Warning system

Overhead Console Wiring Diagram, without Roof Opening Panel for Ford F550 Super Duty 2003

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List of elements for Overhead Console Wiring Diagram, without Roof Opening Panel for Ford F550 Super Duty 2003:

(in main harness, at breakout for instrument cluster) s253
(not
(on vehicle floor, in left front footwell) g300
6.0l
Abs control module (at left side of engine compartment)
Ambient air temperature sensor (on left front of engine compt)
C1381a
C175
C270a
California
Central junction box (cjb) (behind lower left side of dash)
Computer data lines system
Except 6.0l
Except california
Fuel tank selector valve
Fuel tank unit
Fuse 15a
Hot in run
Interior lights system
Nca
Overhead console
Powertrain control module (pcm) (on left side of firewall)
S172
S201
S206
S208 (in main harness, near breakout for c264)
Used)
W/ auxiliary fuel tank
W/o auxiliary fuel tank

INTERIOR LIGHTS

Courtesy Lamps Wiring Diagram (1 of 2) for Ford F550 Super Duty 2003

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List of elements for Courtesy Lamps Wiring Diagram (1 of 2) for Ford F550 Super Duty 2003:

Battery saver relay
C205b
C220a
C220c
C270a
C270b
Central junction box (behind lower left side of dash)
Fuse 35 10a
Fuse 41 10a
G201 (behind left side of dash)
G202 (behind left side of dash)
Glove box lamp
Hot at all times
Instrument cluster
Interior
Interior lamps relay
Left vanity mirror lamp
Main light switch
Microprocessor
Nca
Overhead console (w/ roof opening panel)
Right vanity mirror lamp
S204 (near breakout for c264)
S218
S229 (near breakout for instrument cluster)
S257
S904
S937 (near breakout for right vanity mirror light)
To accessory delay relay (central junction box) (diagram 2 of 2)
To s905 (diagram 2 of 2)

Courtesy Lamps Wiring Diagram (2 of 2) for Ford F550 Super Duty 2003

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List of elements for Courtesy Lamps Wiring Diagram (2 of 2) for Ford F550 Super Duty 2003:

Accessory delay relay
C270a
C270f
C270j
Central junction box (behind lower left side of dash)
Engine compartment lamp
From s204 (diagram 1 of 2)
From s229 (diagram 1 of 2)
Front interior/map lamps assembly
G100 (at left rear side of engine compt)
G400 (at vehicle under body, chassis left side member)
G900 (at left ``c" pillar)
High mounted stoplamp
Interior
Left front door entry lamp
Left front running board lamp
Left rear running board lamp
Map
Nca
Rear interior/map lamps assembly (crew cab)
Right front door entry lamp
Right front running board lamp (except chassis cab)
Right rear running board lamp (except chassis cab)
S162
S300
S309 (near breakout for left rear running board light)
S310 (near breakout for right rear running board light)
S311 (near breakout for left rear running board light)
S312 (near breakout for right rear running board light)
S344 (in taillamps harness, near breakout for c311)
S401
S501
S639
S905 (at breakout for front interior/map light assembly)
S906

Instrument Illumination Wiring Diagram (1 of 2) for Ford F550 Super Duty 2003

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List of elements for Instrument Illumination Wiring Diagram (1 of 2) for Ford F550 Super Duty 2003:

(w/ roof opening panel)
(w/o rke) s639
(w/o roof
Accessory delay relay
Adjustable pedal switch
Air bag sliding contact
Air suspension kneeling switch
Auto
Bulbs
C205a
C205b
C220c
C270b
C270i
C270j
C290a
C294b
Central junction box (behind lower left side of dash)
Circuit breaker 30a
Driver side door lock switch
Exterior lights system
Four-wheel drive switch
Front function selector switch assembly
Fuse 17 15a
Fuse 42 15a
G201 (behind left side of dash)
G202 (behind left side of dash)
G300 (on vehicle floor, in left front footwell)
G900 (at left ``c" pillar)
Head
Hot at all times
Instrument cluster
Main light switch
Microprocessor
Nca
Off
Opening panel)
Overhead console
Park
Parking aid disable switch
Passenger side door lock switch
Pnk
Radio
S201
S215 (near breakout to main light switch)
S216 (in main harness, near breakout sunload sensor)
S217
S218
S233 (w/ rke)
S272
S290
S297
S302
S501
Steering wheel/speed control switch
To master window adjust switch (diagram 2 of 2)
To passenger side window adjust switch (diagram 2 of 2)

Instrument Illumination Wiring Diagram (2 of 2) for Ford F550 Super Duty 2003

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List of elements for Instrument Illumination Wiring Diagram (2 of 2) for Ford F550 Super Duty 2003:

C504a
C504b
Crew cab
Except crew cab
From s297 (diagram 1 of 2)
G900 (at left ``c" pillar)
Left rear window adjust switch
Master window adjust switch
Passenger side window adjust switch
Right rear window adjust switch
S328 (near breakout for g300)
S501

POWER DISTRIBUTION

Power Distribution Wiring Diagram (1 of 4) for Ford F550 Super Duty 2003

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List of elements for Power Distribution Wiring Diagram (1 of 4) for Ford F550 Super Duty 2003:

(6.0l) (except 6.0l)
(behind left side of dash) g201
(breakout for auxiliary relay box 4) s103
(except 6.0l) (6.0l)
(in back-up light switch to rear light feed harness, at breakout for auxiliary relay box 3) s199
(in engine control harness, near breakout for abs control module) s163
(near breakout for auxiliary relay box 1) s249
(near breakout for data link connector) s242
(near breakout for instrument cluster) s228
(near breakout for instrument cluster) s275
(near breakout to brake pedal position switch) s214
(near breakout to main light switch) s272
5 speed a/t
6.0l
A/c clutch relay
Abs control module
Adjustable pedal switch
Auxiliary relay box 1 (behind dash panel, to left of glove box near center of dash)
Auxiliary relay box 3 (left rear side of engine compt)
Auxiliary relay box 4 (except 6.0l) auxiliary relay box 5 (6.0l) (left rear side of engine compt)
Auxiliary relay box 4 (or 5) (left rear side of engine compt)
Auxiliary relay box 5 (left rear side of engine compt)
Battery
Battery ii (6.0l/7.3l)
Brake pedal position switch
Brake pressure switch (5.4l/6.8l)
C202a
C205a
C2113b
C270a
C270b
C270d
C270e
C270f
C270g
C270h
C270i
C270j
C270k
C270m
C270p
C281c
C290a
Central junction box (cjb) (behind lower left side of dash)
Clutch pedal position switch
Data link connector (dlc)
Daytime running lamps resistor
Digital transmission range (dtr) sensor
Except 5 speed a/t
Except 6.0l
Exterior rear view mirror switch
Four- wheel drive control module
Four-wheel drive control module (w/ electronic shift on the fly)
From a fuse 602 (diagram 1 of 4)
From b fuse 13 (diagram 1 of 4)
From ignition switch (diagram 3 of 4)
Front cigar lighter
Fuse 1 15a
Fuse 10 10a
Fuse 11 20a
Fuse 111 30a
Fuse 114 30a
Fuse 12 20a
Fuse 13 10a
Fuse 14 15a
Fuse 17 15a
Fuse 18 20a
Fuse 19 5a
Fuse 20 10a
Fuse 31 15a
Fuse 34 10a
Fuse 4 20a
Fuse 5a
Fuse 6 20a
Fuse 602 60a
Fuse 7 30a
Indicator flasher relay
Injector driver module power relay
Instrument panel power point
Junction block
Left turn trailer tow relay
Main light switch
Multi- function switch
Nca
Passenger side front seat adjust switch
Radio
Red
Right turn trailer tow relay
S1000 (in battery output harness, at breakout for junction block on left fender)
S1002 (in battery output harness, near grommet on firewall)
S257 s290
S290 s257
Starter relay
To fuse (diagram 1 of 4)
To fuse 35 (diagram 2 of 4)
Transfer case high to low relay
Transfer case low to high relay
Vehicle security module (vsm)

Power Distribution Wiring Diagram (2 of 4) for Ford F550 Super Duty 2003

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List of elements for Power Distribution Wiring Diagram (2 of 4) for Ford F550 Super Duty 2003:

(6.0l)
(in body main harness, near breakout for g300) s289
(in body main harness, near grommet on left side of vehicle floor) s315
(in main harness, at breakout for instrument cluster) s254
(w/ super cab)
Battery charge trailer tow relay
C175
C2113b
C220c
C270a
C270b
C270c
C270e
C270g
C270i
C270k
C270m
C281c
C3181a
Central junction box (cjb) (behind lower left side of dash)
Driver side door lock switch
Driver side front heated seat module
Driver side front seat adjust switch
Four-wheel drive control module
From c fuse 111 (diagram 1 of 4)
From d fuse 112 (diagram 2 of 4)
From ignition switch (diagram 3 of 4)
Fuel heater relay (6.0l)
Fuel pump relay
Fuel tank selector switch
Fuse 101 30a
Fuse 102 30a
Fuse 104 40a
Fuse 105 30a
Fuse 106 30a
Fuse 109 30a
Fuse 112 30a
Fuse 113 30a
Fuse 115 20a
Fuse 33 15a
Fuse 35 10a
Fuse 36 10a
Fuse 37 15a
Fuse 40 20a
Fuse 41 10a
Horn relay
Injector driver module (idm) power relay (7.3l)
Instrument cluster
Nca
Not used
Passenger side door lock switch
Passenger side front heated seat module
Pcm power relay
Powertrain control module (pcm)
Rear window defrost relay
Red
Starter relay
To fuse (diagram 2 of 4)
To fuse (diagram 3 of 4)
Vehicle security module (vsm)
W/ remote keyless entry
W/o remote keyless entry
Windshield wiper motor

Power Distribution Wiring Diagram (3 of 4) for Ford F550 Super Duty 2003

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List of elements for Power Distribution Wiring Diagram (3 of 4) for Ford F550 Super Duty 2003:

(5.4l: near breakout for fuel injector 3) (6.8l: near breakout for fuel injector 5) s135
(5.4l: near breakout for fuel injector 6) (6.8l: near breakout for fuel injector 9) s130
(6.0l/7.3l)
(a/t)
(in engine control harness, near breakout for left headlight) (6.0l) s109
(in engine control sensor & fuel charge harness, near breakout for waste gate solenoid) s154
(in main harness, near breakout for instrument cluster) s271
(in main harness, near breakout for restraints control module) s202
(in main harness, near breakout to ignition switch) s210
(not used)
(or
4 speed a/t
5 speed a/t
5.4l
5.4l/6.8l
6.0l
6.0l/7.3l
6.8l
Abs control module
Acc
Accelerator pedal position sensor
Auxiliary powertrain control module (apcm) (6.0l/7.3l)
Auxiliary relay box 5 (left rear side of engine compt)
Blower motor relay
C1388c
C220c
C270a
C270c
C270e
C270f
C281a
Central junction box (cjb) (behind lower left side of dash)
Clutch triple function switch jumper clutch pedal position switch (m/t)
Coil on plug (cop) 1
Coil on plug (cop) 10
Coil on plug (cop) 2
Coil on plug (cop) 3
Coil on plug (cop) 4
Coil on plug (cop) 5
Coil on plug (cop) 6
Coil on plug (cop) 7
Coil on plug (cop) 8
Coil on plug (cop) 9 (6.8l)
Electronic fan clutch (6.0l)
Except 6.0l
Fog lamp relay
Four- wheel drive control module
From e fuse 115 (diagram 2 of 4)
Fuel heater
Fuel heater relay
Fuse 103 50a
Fuse 107 40a
Fuse 10a
Fuse 110 50a
Fuse 116 30a
Fuse 25 10a
Fuse 26 10a
Fuse 38 20a
Fuse 45 10a
Fuse 8 15a
Grade/ load switch
Ignition switch
Ignition transformer capacitor 1
Ignition transformer capacitor 2
Injector driver module (idm)
Injector driver module (idm) power relay
Instrument cluster
Lock
Main light switch (w/ fog lamps)
Nca
Off
Overdrive cancel switch
Parking lamp trailer tow relay
Passenger air bag deactivation (pad) switch
Pcm power relay
Restraints control module
Reversing lamp trailer tow relay
Reversing lamps relay
Run
S224 (in main harness, near breakout to brake pedal position switch)
S258 (in main harness, near breakout to brake pedal position switch)
Sta
Start
Tan/red
To fuse 27 (diagram 4 of 4)
To fuse 31 (diagram 1 of 4)
To fuse 33 (diagram 2 of 4)
Waste gate solenoid

Power Distribution Wiring Diagram (4 of 4) for Ford F550 Super Duty 2003

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List of elements for Power Distribution Wiring Diagram (4 of 4) for Ford F550 Super Duty 2003:

(in body main harness, near breakout for c340) s303
(in daytime running light kit harness, near breakout for c1047) s198
(in engine control harness, near breakout for g100) s124
(in main harness, near breakout sunload sensor) s206
(in main harness, near breakout sunload sensor) s235
(in main harness, near breakout to air suspension kneeling switch) s296
(not used)
5.4l/6.8l
6.0l/7.3l
A/t
Air suspension kneeling switch
Air suspension module
Auxiliary relay box 1 (behind dash panel, to left of glove box near center of dash)
Auxiliary relay box 2 (left rear side of engine compartment)
Battery charge trailer tow relay
Blower motor relay
Brake shift interlock
C270a
C270c
C270h
C294a
Central junction box (cjb) (behind lower left side of dash)
Digital transmission range (dtr) sensor
Driver side front heated seat module
Electronic shift on the fly (esof) solenoid
From fuse 25 (diagram 3 of 4)
From ignition switch (diagram 3 of 4)
Front function selector switch assembly
Fuse 10a
Fuse 15a
Fuse 27 15a
Indicator flasher relay
M/t
Nca
Overhead console
Park brake relay
Parking aid module (pam)
Passenter side front heated seat module
Rear window defrost relay
Reversing lamps switch
Speed control servo
Temperature blend door actuator
Vaccum pump motor
W/ roof opening panel

POWER DOOR LOCKS

Power Door Locks Wiring Diagram, without Keyless Entry for Ford F550 Super Duty 2003

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List of elements for Power Door Locks Wiring Diagram, without Keyless Entry for Ford F550 Super Duty 2003:

(in body main harness, near breakout for c340) s304
C270e
Central junction box (cjb) (behind lower left side of dash)
Driver side door lock switch
Fuse 30a
G900 (at left ``c" pillar)
Hot at all times
Interior lights system
Left front door lock actuator
Left rear door lock actuator (w/ crew cab)
Lock
Passenger side door lock actuator
Passenger side door lock switch
Pnk
Right rear door lock actuator (w/ crew cab)
S289
S501
S639
Unlock

POWER MIRRORS

Power Mirrors Wiring Diagram for Ford F550 Super Duty 2003

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List of elements for Power Mirrors Wiring Diagram for Ford F550 Super Duty 2003:

(at left "c" pillar) g900
(crew cab)
(except crew cab)
(near breakout for g300) s279
C270d
C270j
Central junction box (cjb) (behind lower left side of dash)
Down
Driver side exterior rear view mirror
Exterior lights system
Exterior rear view mirror switch
Fuse 10a
Fuse 20a
Fuse 40a
G301 (at left "c" pillar)
Hot at all times
Left
Left mirror select
Nca
Passenger side exterior rear view mirror
Rear window defrost relay
Red
Right
Right mirror select
S317 (near grommet on left side of vehicle floor)
S501
S639

POWER SEATS

Adjustable Pedal Wiring Diagram for Ford F550 Super Duty 2003

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List of elements for Adjustable Pedal Wiring Diagram for Ford F550 Super Duty 2003:

270d
Adjustable pedal motor (in driver's footwell)
Adjustable pedal switch
Central junction box (behind lower left side of dash)
Fuse 15a
Fwd
G201 (behind left side of dash)
Hot at all times
Interior lights system
Nca
Rwd
S257

Driver Power Seat Wiring Diagram for Ford F550 Super Duty 2003

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List of elements for Driver Power Seat Wiring Diagram for Ford F550 Super Duty 2003:

(at left "c" pillar) g301
(excursion)
(excursion) (pickup)
(on vehicle floor, in left front footwell) g300
(pickup)
(pickup) (excursion)
C270i
Central junction box (behind lower left side of dash)
Driver side front seat adjust switch
Except super cab
Forward/rearward
Front up/down
Fuse 30a
Fwd
G900 (at left "c" pillar)
Hot at all times
Left power seat motor assembly
Nca
Rear up/down
Rwd
S332 s301
St dn
St up
Super cab
W/ heated seats
W/o heated seats

Heated Seats Wiring Diagram for Ford F550 Super Duty 2003

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List of elements for Heated Seats Wiring Diagram for Ford F550 Super Duty 2003:

(at left "c" pillar) g900
Bat
C270j
C270k
Central junction box (behind lower left side of dash)
Driver side front heated seat module
Driver side seat heater switch
Fuse 15a
Fuse 30a
Gnd
Heater feed
Heater ret
Hot at all times
Hot in run
Ind
Left front seat back heater
Left front seat cushion heater
Passenger side front heated seat module
Passenger side seat heater switch
Right front seat back heater
Right front seat cushion heater
S303
S315
S332
S333
S335
S355
Sens feed
Sens ret
Sw input
Voltage
W/ pwr seats
W/o pwr seats

Passenger Power Seat Wiring Diagram for Ford F550 Super Duty 2003

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List of elements for Passenger Power Seat Wiring Diagram for Ford F550 Super Duty 2003:

(at left "c" pillar) g900
(excursion)
(pickup)
C270i
Central junction box (behind lower left side of dash)
Forward/rearward
Front up/down
Fuse 30a
Fwd
G301 (at left "c" pillar)
Hot at all times
Nca
Passenger side front seat adjust switch
Rear up/down
Right power seat motor assembly
Rwd
S335
St dn
St up

POWER WINDOWS

Power Windows Wiring Diagram, Crew Cab for Ford F550 Super Duty 2003

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List of elements for Power Windows Wiring Diagram, Crew Cab for Ford F550 Super Duty 2003:

(in body main harness, near breakout for g300) s328
(near breakout for instrument cluster)
Accessory delay relay
Battery saver relay
C220b
C220c
C270a
C270b
C270i
C270j
C504a
C504b
Central junction box (cjb) (behind lower left side of dash)
Circuit breaker 601 30a
Driver
Driver side front power window motor
Excursion pickup
Fuse 35 10a
Fuse 41 10a
Fuse 42 15a (excursion)
G301 g900 (at left ``c" pillar)
G901 (excursion) (at rear of of vehicle roof)
G901 (excursion) (at rear of vehicle roof)
Hot at all times
Instrument cluster
Interior lights system
Left power vent window motor (at left rear of roof)
Left power vent window switch (excursion)
Left rear
Left rear power window motor
Left rear window adjust switch
Lock
Master window adjust switch
Microprocessor
One- touch down
One-touch down relay
Passenger
Passenger side front power window motor
Passenger side window adjust switch
Pnk
Right power vent window motor (at right rear of roof)
Right power vent window switch (excursion)
Right rear
Right rear power window motor
Right rear window adjust switch
S229
S501
S935
S939
Vpwr

Power Windows Wiring Diagram, Except Crew Cab for Ford F550 Super Duty 2003

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List of elements for Power Windows Wiring Diagram, Except Crew Cab for Ford F550 Super Duty 2003:

(near breakout for g300) s297
Accessory delay relay
Battery saver relay
C220b
C220c
C270a
C270b
C270i
C504a
Central junction box (cjb) (behind lower left side of dash)
Circuit breaker 601 30a
Driver
Driver side front power window motor
Fuse 35 10a
Fuse 41 10a
G900 (at left ``c" pillar)
Hot at all times
Instrument cluster
Lock
Master window adjust switch
Microprocessor
One- touch down
One-touch down relay
Passenger
Passenger side front power window motor
Passenger side window adjust switch
S229
S501
Vpwr

RADIO

Radio Wiring Diagram for Ford F550 Super Duty 2003

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List of elements for Radio Wiring Diagram for Ford F550 Super Duty 2003:

(behind left side of dash) g201
Antenna
C270a
C270d
C290a
Central junction box (behind lower left side of dash)
Fuse 15a
Fuse 20a
Fuse 5a
Fused ign
G200 (behind left side of dash)
Ground
Hot at all times
Hot in start
Hot with acc delay relay energized
Ilumination
Interior lights system
L f spkr
L r spkr
Left front speaker
Left rear speaker
Mem power
Nca
Pnk
Power
R f spkr
R r spkr
Radio
Right front speaker
Right rear speaker
S285
S290

SHIFT INTERLOCK

Shift Interlock Wiring Diagram for Ford F550 Super Duty 2003

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List of elements for Shift Interlock Wiring Diagram for Ford F550 Super Duty 2003:

Brake pedal position switch (behind left side of dash, above brake pedal)
Brake shift interlock
C270a
Central junction box (behind lower left side of dash)
Fuse 27 15a
Fuse 34 10a
G202 (behind left side of dash)
G300 (on vehicle floor, in left front footwell)
Hot at all times
Hot in run
S201
S205 (near breakout to break pedal position switch)
S206
S218
S228
Solid state

STARTING/CHARGING

Starting Wiring Diagram, 4 Speed A/T, M/T & 4 Speed A/T for Ford F550 Super Duty 2003

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List of elements for Starting Wiring Diagram, 4 Speed A/T, M/T & 4 Speed A/T for Ford F550 Super Duty 2003:

4 speed a/t
6.0l
Acc
Battery
Battery (diesel)
C270a
C270b
C270c
C270f
C270g
C270h
Central junction box (behind lower left side of dash)
Clutch pedal position switch (behind left side of dash, above clutch pedal)
Digital transmission range (dtr) sensor (on left side of transmission)
Exc 6.0l
Fuse 15a
Fuse 30a
Fuse 50a
G100 (at left rear side of engine compt)
G102 (at right side of engine)
G104 (in engine compartment, at right fender)
G106 (diesel) (at right frame rail, in engine compartment)
G109 (at left side of engine)
Ignition switch
Junction block
Lock
M/t
Nca
Off
Power distribution system
Red
Run
S1000
S162
S210
Sta
Start
Starter motor
Starter relay
Tan/ red
Tan/red

Starting Wiring Diagram, 5 Speed A/T for Ford F550 Super Duty 2003

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List of elements for Starting Wiring Diagram, 5 Speed A/T for Ford F550 Super Duty 2003:

(in back-up light switch to rear light feed harn, near breakout for trans)
5r100 transmission
Acc
Battery
Battery (diesel)
C1381a
C1381b
C270b
C270f
C270g
C270h
Central junction box (behind lower left side of dash)
Fuse 15a
Fuse 30a
Fuse 50a
G102 (at right side of engine)
G104 (in engine compartment, at right fender)
G106 (diesel) (at right frame rail, in engine compartment)
G109 (at left side of engine)
Ignition switch
Junction block
Lock
Nca
Off
Power distribution system
Powertrain control module (on left side of firewall)
Red
Run
S1000
S127
S128
S210
Sta
Start
Starter motor
Starter relay
Transmission range sensor
Transmissions system

6.0L DIESEL

6.0L Diesel, Charging Wiring Diagram, without Dual Generators for Ford F550 Super Duty 2003

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List of elements for 6.0L Diesel, Charging Wiring Diagram, without Dual Generators for Ford F550 Super Duty 2003:

(6.0l) (except 6.0l)
(federal) (california)
5.4l, 6.8l
5.4l, 6.8l, 7.3l
6.0l
7.3l
Acc
Battery
Battery (diesel)
C102a
C220b
C220c
C270a
C270c
C270e
Central junction box (cjb) (behind lower left side of dash)
Charge
Fuse 10a
Fuse 30a
G102 (at right side of engine)
G104 (in engine compartment, at right fender)
G106 (diesel) (at right frame rail, in engine compartment)
G109 (at left side of engine)
Generator
Hot at all times
Ignition switch
Instrument cluster
Lock
Off
Power distribution system
Red
Run
S125
S126
S149
S150 s147
S224 s258
S271
Start
Starter motor

6.0L Diesel, Charging Wiring Diagram, with Dual Generators for Ford F550 Super Duty 2003

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List of elements for 6.0L Diesel, Charging Wiring Diagram, with Dual Generators for Ford F550 Super Duty 2003:

(6.0l)
(6.0l) (7.3l)
(7.3l)
(federal) (california)
6.0l
7.3l
Acc
Battery
Battery (diesel)
C102a
C1251a
C1381a
C1381c
C220b
C220c
C270a
C270c
C270e
Central junction box (behind lower left side of dash)
Charge
Fuse 10a
Fuse 30a
G102 (at right side of engine)
G104 (in engine compartment, at right fender)
G106 (diesel) (at right frame rail, in engine compartment)
G109 (at left side of engine)
Generator
Hot at all times
Ignition switch
Instrument cluster
Lock
Off
Power distribution system
Powertrain control module (pcm) (on left side of firewall)
Red
Run
S125
S126
S143
S149
S150 s147
S165
S166
S224 s258
S271
Secondary generator
Start
Starter motor

7.3L DI TURBO DIESEL

7.3L DI Turbo Diesel, Charging Wiring Diagram, without Dual Generators for Ford F550 Super Duty 2003

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List of elements for 7.3L DI Turbo Diesel, Charging Wiring Diagram, without Dual Generators for Ford F550 Super Duty 2003:

(6.0l) (except 6.0l)
(federal) (california)
5.4l, 6.8l
5.4l, 6.8l, 7.3l
6.0l
7.3l
Acc
Battery
Battery (diesel)
C102a
C220b
C220c
C270a
C270c
C270e
Central junction box (cjb) (behind lower left side of dash)
Charge
Fuse 10a
Fuse 30a
G102 (at right side of engine)
G104 (in engine compartment, at right fender)
G106 (diesel) (at right frame rail, in engine compartment)
G109 (at left side of engine)
Generator
Hot at all times
Ignition switch
Instrument cluster
Lock
Off
Power distribution system
Red
Run
S125
S126
S149
S150 s147
S224 s258
S271
Start
Starter motor

7.3L DI Turbo Diesel, Charging Wiring Diagram, with Dual Generators for Ford F550 Super Duty 2003

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List of elements for 7.3L DI Turbo Diesel, Charging Wiring Diagram, with Dual Generators for Ford F550 Super Duty 2003:

(6.0l)
(6.0l) (7.3l)
(7.3l)
(federal) (california)
6.0l
7.3l
Acc
Battery
Battery (diesel)
C102a
C1251a
C1381a
C1381c
C220b
C220c
C270a
C270c
C270e
Central junction box (behind lower left side of dash)
Charge
Fuse 10a
Fuse 30a
G102 (at right side of engine)
G104 (in engine compartment, at right fender)
G106 (diesel) (at right frame rail, in engine compartment)
G109 (at left side of engine)
Generator
Hot at all times
Ignition switch
Instrument cluster
Lock
Off
Power distribution system
Powertrain control module (pcm) (on left side of firewall)
Red
Run
S125
S126
S143
S149
S150 s147
S165
S166
S224 s258
S271
Secondary generator
Start
Starter motor

SUPPLEMENTAL RESTRAINTS

Supplemental Restraints Wiring Diagram for Ford F550 Super Duty 2003

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List of elements for Supplemental Restraints Wiring Diagram for Ford F550 Super Duty 2003:

(under right side dash panel) g203
500,000 (or 500) ohms
Air bag feed
Air bag indicator
Air bag return
Air bag sliding contact
C220a
C220b
C220c
C270a
C270c
Central junction box (behind lower left side of dash)
Data link connector (dlc) (partial) (behind center of dash)
Driver air bag unit
Driver safety belt retractor pretensioner
Fuse f2.26 10a
Fuse f2.33 15a
Fuse f2.45 10a
Ground
Hot in acc or run
Hot in run
Hot in run or start
Ignition
Indicator ctrl
Instrument cluster
Iso bus
Nca
Ohms
Pad ind ctrl
Pad input
Passenger air bag deactivation (pad) switch (on right side of dash)
Passenger air bag module
Passenger safety belt retractor pretensioner
Pin shorting bars engaged when module connector is disconnected from harness: (shorting bars connected between pins 3-4, 6-7 & 20-21)
Preten feed
Preten return
Restraints control module (rcm) (behind center of dash)
S202
S225 (in main harn, near breakout for instrument cluster)
S254
S271
S299
Shorting bar
Tone driver

TRANSMISSION

4WD Wiring Diagram for Ford F550 Super Duty 2003

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List of elements for 4WD Wiring Diagram for Ford F550 Super Duty 2003:

(in backup light switch to rear light feed harn, near breakout to c1220)
(left side of engine compt) abs control module
(left side of transmission) digital transmission range sensor
(pick-up)
4wd hi
4wd hi ind
4wd lo
4wd lo ind
4wd sw
87a
Auxiliary relay box 3 (left rear side of engine compartment)
Bpp sw
Brake pedal position switch (behind left side of dash, above brake pedal)
C135
C220b
C270a
C270h
C270m
C281a
C281b
C281c
C350a
C350b
Central junction box (lower left side of dash)
Clutch pedal position switch
Computer data lines connector
Data link connector (behind center of dash)
Dtr sensor, park brake relay, gas: speed control servo, dsl: vacuum pump motor
Electronic shift-on-the-fly (esof) solenoid (right side of engine compt)
Esof sol
Excursion: pats module, eatc module
Exterior lights system
Four-wheel drive control module (behind right side of dash)
Four-wheel drive switch
Fuse 10a
Fuse 15a
Fuse 30a
G100 (left rear side of engine compt)
G201 (behind left side of dash)
G300 (at floor, in left front footwell)
Ground
Hi to lo
Hot at all times
Hot in run
Hot in run or acc
Hot in run or start
Hot in start
Ign (st)
Ign (st/run)
Illum
Instrument cluster
Instrument cluster, windshield wiper motor, pickup: fuel tank selector switch
Interior lights system
Iso bus
Lo to hi
Main light switch, accelerator pedal position sensor, main light switch, instrument cluster, auxiliary powertrain control module, grade/load switch, clutch triple function switch jumper, overdrive cancel switch
Motor 2
Motor 3
Motor 4
Motor 5
Nuet sens
Off
Pickup
Red
Ref volt
Reverse
S124
S199
S201
S205 (behind left side of dash)
S225 (behind instrument cluster)
S228
S250
S253 (main harn, at breakout for instrument cluster)
S254
S255
S257
S271
S275
Shift sol
Transfer case assembly
Transfer case high to low relay
Transfer case low to high relay
Vpwr
Vss in
Vss out

6.0L DIESEL

6.0L Diesel, A/T Wiring Diagram (1 of 2) for Ford F550 Super Duty 2003

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List of elements for 6.0L Diesel, A/T Wiring Diagram (1 of 2) for Ford F550 Super Duty 2003:

(in engine con- trol sensor & fuel charge harn, at break- out for air charge temp sensor)
(in engine control harn, near breakout for g101)
(in main harn, near breakout to brake pedal position switch) s224
(maf) sens out
Acc
Brake ped pos sw
Brake pedal position (bpp) switch (behind left side of dash, above brake pedal)
Brake pressure switch, egr valve actuator, injection pressure regulator, glow plug control module
C1381a
C1381c
C270a
C270h red
Can bus 1h
Can bus 1l
Central junction box (behind lower left side of dash)
Chassis gnd
Cool temp sens
Data link connector (dlc) (behind left side of dash)
Egr thrtl pos
Engine coolant temperature (ect) sensor
Fuse 10a
Fuse 20a
Fuse 30a
G100
G101
G300 (on vehicle floor, in left front footwell)
Grade/load switch
Grd/load sw
Hot at all times
Hot in run or start
Ignition switch
Injector driver module, fuel heater relay
Intk air temp sens
Lock
Maf sens sig rtn
Main light switch, accelerator pedal position sensor, main light switch, instrument cluster, auxiliary powertrain control module, clutch triple function switch jumper, grade/load switch
Mass airflow (maf) sensor
Nca
Off
Pcm power diode
Pcm power relay
Powertrain control module (pcm) (on left side of firewall)
Pwr gnd
Pwr in
Red
Ref volt
Run
S101
S106
S114
S123
S162
S190
S192
S271
Sig rtn
Start
Throttle position (tps) sensor
To fuel pump relay

6.0L Diesel, A/T Wiring Diagram (2 of 2) for Ford F550 Super Duty 2003

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List of elements for 6.0L Diesel, A/T Wiring Diagram (2 of 2) for Ford F550 Super Duty 2003:

(epc) sol 1 ctrl
(epc) sol 2 ctrl
(epc) sol 3 ctrl
(epc) sol 4 ctrl
(epc) sol 5 ctrl
(epc) sol common
(in back-up light switch to
(iss) sens in
(on left side of firewall)
(oss) sens in
(tcc) sol ctrl
(tcil) ctrl
(tft) sens
(tft) sens in
(tss) sens in
(w/ elec- tronic shift on the fly)
Automatic transmission 5r110
C1381b
C281b
Exterior lights system
Four- wheel drive control module (behind right side of dash)
In breakout to transmission)
Intermediate shaft
Line press sol
Neutral sw sen
Output shaft speed (oss) sensor (on top of transmission extension housing)
Powertrain control module (pcm)
Pressure control solenoid
Pressure sw 1 in
Pressure sw 2 in
Pressure sw 3 in
Pressure sw 4 in
Pressure sw 5 in
Rear light feed harness,
Ref volt
Rev lmp rly ctrl
S127
S128 (in back-up light switch to rear light feed harn, near breakout for transmission)
S129
Sig rtn
Speed sensor
Speed sensor assembly
Tran range sens
Transmission fluid temperature sensor
Transmission range sensor (trs)
Turbine shaft speed sensor

6.8L

6.8L, A/T Wiring Diagram for Ford F550 Super Duty 2003

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List of elements for 6.8L, A/T Wiring Diagram for Ford F550 Super Duty 2003:

(5.4l calif) s133
(backup light sw to rear light feed harn, near breakout for auto trans module)
(eng cntrl harn, near breakout for brake pressure switch)
(eng cntrl harn, near breakout for g100 s122
(in main harn, near breakout to brake pedal position switch)
(left side of firewall) powertrain control module (pcm)
4-wheel drive control module, pats module, eatc module
4r100 transmission
Bpp sw
Brake pedal position switch
C175
C270a
C270f
C270h
Ccs
Central junction box (lower left side of dash)
Cht
Coast clutch
Computer data lines system
Control solenoids
Cylinder head temperature sender (on right cylinder head)
Data
Digital transmission range sensor (left side of transmission)
Electronic pressure
Engine controls
Epc
Exterior lights system
Fuse 10a
Fuse 20a
G100 (left rear of engine compt)
G101 (left rear of engine compt)
G300 (at floor, in left front footwell)
Ground
Hot at all times
Hot in run or start
Iat
Maf
Main light switch, accelerator pedal position sensor, main light switch, instrument cluster, overdrive cancel switch
Mass airflow sensor (left front of engine compt)
Nca
Near breakout for g101)
Oss
Output shaft speed sensor (top of transmission extension housing)
Overdrive cancel switch
Pcm power diode
Pcm power relay
R p
Red
S106
S114 (eng cntrl narn near breakout for g101)
S123 (in eng cntrl harn, near breakout for powertrain control module)
S132
S138
S139
S162
S170 (calif)
S201
S205
S228
S271
Scp (+)
Scp (-)
Shift 1
Shift 2
Sig rtn
Ss1
Ss2
Tcc
Tcil
Tcs
Tft
Throttle position (tp) sensor (on throttle body)
Tr1
Tr2
Tr3
Tr4
Transmission converter clutch
Transmission fluid temperature sensor
Tss
Turbine shaft speed sensor (top of transmission at converter housing)
Vpwr
Vref

7.3L DIESEL

7.3L Diesel, A/T Wiring Diagram for Ford F550 Super Duty 2003

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List of elements for 7.3L Diesel, A/T Wiring Diagram for Ford F550 Super Duty 2003:

(backup light switch to rear light feed harn, near breakout for auto trans module)
(eng cntrl harn, near breakout for g100) s122
(eng cntrl harn, near breakout for g101)
(left side of engine compt)
(left side of firewall) powertrain control module (pcm)
(main harn, near breakout to brake pedal position switch)
4-wheel drive control, pats & eatc module
4r100 transmission
Accelerator pedal position sensor (on accelerator pedal support)
App
Bpp sw
Brake pedal position switch
C175
C270a
C270f
C270g
C270h
Ccs
Central junction box (lower left side of dash)
Coast clutch
Computer data lines system
Control solenoids
Data
Digital transmission range sensor (left side of transmission)
Electronic pressure
Engine controls
Epc
Exterior lights system
Fuse 10a
Fuse 20a
G100 (left rear of engine compt)
G101
G300 (at floor, in left front footwell)
Ground
Hot at all times
Hot in run or start
Iat
Intake air temperature sensor (left side of engine compt)
Main light switch, accelerator pedal position sensor, main light switch, instrument cluster, auxiliary powertrain control module, clutch triple function switch jumper, overdrive cancel switch
Nca
Near breakout for g101)
Oss
Output shaft speed sensor (top of transmission extension housing)
Overdrive cancel switch
Pcm power diode
Pcm power relay
R p
Red
S106
S114
S123 (eng cntrl harn, near breakout for g100)
S138
S139
S162
S170 (eng cntrl harn, near breakout for brake pressure switch)
S201
S205
S228
S271
Scp (+)
Scp (-)
Shift 1
Shift 2
Sig rtn
Ss1
Ss2
Tcc
Tcil
Tcs
Tft
Tr1
Tr2
Tr3
Tr4
Transmission converter clutch
Transmission fluid temperature sensor
Tss
Turbine shaft speed sensor (top of transmission, at converter housing)
Vbatt
Vpwr
Vref

WARNING SYSTEMS

Warning Systems Wiring Diagram, with Remote/Keyless Entry for Ford F550 Super Duty 2003

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List of elements for Warning Systems Wiring Diagram, with Remote/Keyless Entry for Ford F550 Super Duty 2003:

(at left ``c" pillar)
(at left ``c'' pillar)
(behind left side of dash)
(excursion)
(excursion) g301
(excursion, pickup w/ power equipment except crew cab) (pickup w/o power equipment) (crewcab w/ power equipment)
(pickup) (at left ``c" pillar)
(pickup) g900
Air bag sliding contact
Auto
C205a
C2113a
C2113b
C2113c
C220a
C220b
C220c
C270a
C270b
C270e
Central junction box (behind lower left side of dash)
Data link connector (dlc)
Driver side front door ajar switch
Driver side rear door ajar switch
Excursion
Fuse 10a
Fuse 15a
Fuse 30a
Fuse 5a
G300 (on vehicle floor, in left front footwell)
G301 g900 (pickup) (at left (at left ``c" pillar)
G900 g301 (excursion) (at left ``c" pillar)
G901 (at rear of vehicle roof)
Head
Hot at all times
Hot in run or acc
Hot in run or start
Instrument cluster
Key warning switch
Left liftgate ajar switch
Main light switch
Nca
Off
Park
Passenger side front door ajar switch
Passenger side rear door ajar switch
Restraints control module (behind center of dash)
Right liftgate ajar switch
S201
S214
S233
S247 (near breakout to passenger air bag module)
S254
S271
S300
S307 (in body main harness, near breakout for driver's seat module)
S332
S440
S501
S639
Safety belt buckle switch (in driver's seat belt buckle)
Vehicle security module (behind left side of dash)
``c" pillar)

Warning Systems Wiring Diagram, without Remote/Keyless Entry for Ford F550 Super Duty 2003

Get access to all wiring diagrams of the car

List of elements for Warning Systems Wiring Diagram, without Remote/Keyless Entry for Ford F550 Super Duty 2003:

(at left ``c" pillar) (excursion) g301
(excursion)
(w/ pwr equip) w/o pwr equip)
Air bag sliding contact
Auto
C205a
C2113a
C2113b
C2113c
C220a
C220b
C220c
C270a
C270b
C270e
Central junction box (behind lower left side of dash)
Data link connector (dlc) (behind left side of dash)
Driver side front door ajar switch
Driver side rear door ajar switch
Fuse 10a
Fuse 15a
Fuse 30a
Fuse 5a
G300 (on vehicle floor, in left front footwell)
G301 g900 (pickup) (at left (at left ``c" pillar)
G900 (at left ``c" pillar)
G900 (pickup) (at left ``c" pillar)
Head
Hot at all times
Hot in run or acc
Hot in run or start
Instrument cluster
Key warning switch
Main light switch
Nca
Off
Park
Passenger side front door ajar switch
Passenger side rear door ajar switch
Restraints control module (behind center of dash)
S201
S214
S247 (in main harness, near breakout to passenger air bag module)
S254
S271
S300
S307 (in body main harness, near breakout for driver's seat module)
S332
S501 s300
S639
Safety belt buckle switch (in driver's seat belt buckle)
Vehicle security module (behind left side of dash)
W/ 4 speaker audio system
W/ crew cab
W/o 4 speaker audio system
W/o crew cab
``c" pillar)

WIPER/WASHER

Wiper/Washer Wiring Diagram for Ford F550 Super Duty 2003

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List of elements for Wiper/Washer Wiring Diagram for Ford F550 Super Duty 2003:

(on top left side of firewall) windshield wiper motor
1. off 2. interval 1 3. interval 2 4. interval 3 5. interval 4 6. interval 5 7. low 8. high
Abs control module (at left side of engine compartment)
C202b
C270a
C270m
Central junction box (cjb) (behind lower left side of dash)
Fuse 106 30a
Fuse 33 15a
G100 (at left rear side of engine compt)
G108 (at right side of engine compt)
G202 (behind left side of dash)
G300 (on vehicle floor, in left front footwell)
Hot at all times
Hot in run or acc
Interval switch
Multi-function switch
Red
Rest
Run
S115
S162
S172
S180
S218
S254
Solid state
Washer switch
Windshield washer pump motor (on right side of engine compt)
Windshield washer relay
Wiper high/low relay
Wiper run/park relay