All Wiring Diagrams for Jeep Grand Cherokee Laredo 1999

AIR CONDITIONING

Automatic A/C Wiring Diagram for Jeep Grand Cherokee Laredo 1999

List of elements for Automatic A/C Wiring Diagram for Jeep Grand Cherokee Laredo 1999:

(at bottom of steering column)
(in breakout for ground g120, right side of engine) s103
(lower dash panel) s201
(near airbag control module) g302
(on passenger side end of heater-a/c housing) blower motor
(right headlamp area) g107
(right rear fender area) s129
(right rear of engine) g117
A/c comp rly ctrl
A/c compressor clutch
A/c compressor clutch relay
A/c high pressure cutout switch (on discharge line block fitting, near compressor)
A/c low pressure cycle clutch switch (on top of accumulator)
A/c press signal
A/c switch signal
A16
Automatic zone control module
Battery
Blower motor controller (on heater-a/c housing, inboard of blower motor)
Blower motor ctrl
Blower mtr ctrl
Body control module (on left end of dash, attached to junction block)
C100
C102
C103
C13
C15
C18
C23
C24
C32
C33
C35
C56
C94
C95
C96
D25
Defogger relay out
Defogger sw sense
Defogger system
Diagnostic junction port
Distribution center) s132
Dr blend door dr
Dr blnd door driver
Driver blend door motor/actuator (on front of heater-a/c housing)
Driver blnd door driver
F22
Fuse 15a
Fuse 20 10a
Fuse 21 10a
Fuse 40a
Fuse 7 10a
Ground
Hot at all times
Hot in run
Hot in run or start
Ignition
Junction block (behind left side of dash)
Mode door driver
Mode door motor/actuator (on left end of heater-a/c housing)
Nca
Panel lamps driver
Pass blend door dr
Pass blend door driver
Passenger blend door motor/actuator (on heater-a/c housing)
Pci bus
Pnk
Power distribution center (at right front corner of engine compartment, next to battery)
Powertrain control module (on right side of firewall)
Radiator fan motor (behind radiator)
Radiator fan relay (behind bumper fascia, below right headlamp)
Radiator fan relay ctrl
Recirc door driver
Recirculation door motor/actuator (on heater-a/c housing)
Red
Relay ctrl
Relay output

Manual A/C Wiring Diagram for Jeep Grand Cherokee Laredo 1999

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List of elements for Manual A/C Wiring Diagram for Jeep Grand Cherokee Laredo 1999:

(in breakout for ground g120, right side of engine) s103
(lower dash panel) s206
(near airbag control module) g302
(near power distribution center) s132
(right headlamp area) g107
(right rear fender area) s129
(right rear of engine) g117
A/c comp rly ctrl
A/c compressor clutch
A/c compressor clutch relay
A/c high pressure cutout switch (on discharge line block fitting, near compressor)
A/c low pressure cycle clutch switch (on top of accumulator)
A/c press signal
A/c switch signal
A16
Battery
Blend air dr posit ctrl
Blower motor (on passenger side end of heater-a/c housing)
Blower motor resistor block (bottom of heater-a/c housing, inboard of blower motor)
Body control module (on left end of dash, attached to junction block)
C103
C13
C15
C18
C23
C24
C67
Dash panel) s211
Defogger relay output
Defogger switch sense
Defogger system
F22
Fuse 15a
Fuse 20 10a
Fuse 21 10a
Fuse 40a
Gnd
Ground
High blower mtr driver
Hot at all times
Hot in run
Hot in run or start
Ignition
Junction block (behind left side of dash)
Low blower mtr driver
M1 blower motor driver
M2 blower motor driver
Manual temperature control
Nca
Panel lamps feed
Power distribution center (at right front corner of engine compartment, next to battery)
Powertrain control module (on right side of firewall)
Radiator fan motor (behind radiator)
Radiator fan relay (below bumper fascia, right headlamp)
Radiator fan relay ctrl
Relay ctrl
Relay output
Tan
Temperature valve actuator

ANTI-LOCK BRAKES

Anti-lock Brake Wiring Diagrams for Jeep Grand Cherokee Laredo 1999

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List of elements for Anti-lock Brake Wiring Diagrams for Jeep Grand Cherokee Laredo 1999:

(main harn, near breakout for left courtesy lamp)
1999-00
4.7l only
A10
A20
B41
B42
B43
Brake warning ind in
Brake warning indicator switch (in master cylinder reservoir)
Computer data lines system
Controller anti-lock brake (mounted to hydraulic control unit)
D25
Diagnostic junction port (at bottom of steering column)
Driver door module (in driver door)
Exterior lights
F20
Fuse 10a
Fuse 15a
Fuse 20a
Fuse 40a
Fused ign (run)
G-switch (below right rear seat)
G-switch 1
G-switch 2
G-switch test sig
G102 (left side of eng compt)
Ground
Hot at all times
Hot in run
Instrument cluster
Junction block (behind left side of dash)
Juncton block (behind left side of dash)
L50
Left front wheel speed sensor (on left front steering knuckle)
Left rear wheel speed sensor (on left rear backing plate)
Lf wheel spd sens +
Lf wheel spd sens -
Lr wheel spd sens +
Lr wheel spd sens -
Pci bus
Pci bus c1
Power (battery)
Power distribution center (next to battery)
Powertrain control module (on right side of firewall)
Red
Rf wheel spd sens +
Rf wheel spd sens -
Right front wheel speed sensor (on right front steering knuckle)
Right rear wheel speed sensor (on right rear backing plate)
Rr wheel spd sens +
Rr wheel spd sens -
S117 (near trans- mission control module)
S210
S305 (near base of left "b" pillar)
S312 (left side of dash)
S313 (left side of dash)
S325 (near controller anti-lock module)
Seat module (under seat)
Sentry key immobilizer module (near ignition lock cylinder)
Stoplight sw in
Stoplight switch (top of brake pedal arm)
Transmission control module (on right inner fender)
Vehicle information center (in headliner)
Vehicle spd sens sig
Vehicle speed sensor signal

ANTI-THEFT

Anti-theft Wiring Diagram for Jeep Grand Cherokee Laredo 1999

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List of elements for Anti-theft Wiring Diagram for Jeep Grand Cherokee Laredo 1999:

(in liftgate) s404
(right side of dash) s201
Automatic headlamp light sensor/ vtss led
Body control module (on left end of dash)
Computer data lines system
D25
Diagnostic junction port (at bottom of steering column)
Door ajar sw
Fuse 10a
Fuse 15a
Fused b(+)
Fused ign
G107 (behind right headlamp)
G300 (below left front seat)
G301 (below right front seat)
G302 (below center console)
G69
G76
G77
G78
G80
Ground
Horn 1 (lower right front of engine compt)
Horn 2 (lower right front of engine compt)
Horn relay (in pdc)
Horn rly ctrl
Horn system (horn switch)
Hot at all times
Hot in acc or run
Hot in run or start
Junction block (behind left side of dash)
Left front cylinder switch
Left front door lock motor/ajar switch
Left front door module
Left liftgate ajar switch
Left rear door lock motor/ajar switch
Lf ajar sw
Lf key cyl sw sen
Liftgate ajar
Liftgate ajar sw
Liftgate flip-up ajar switch
Pci bus
Pnk
Power distribution center (next to battery)
Red
Right liftgate ajar switch
Right front door lock motor/ajar switch
Right front door module
S132
S211
S312 (left side of dash)
S324 right side of dash)
S336
S356
S357
S402
Sentry key immoblizer module (near ignition lock cylinder)
Tan/red
Vtss ind driver
Vtss led

BODY COMPUTER

Body Computer Wiring Diagrams for Jeep Grand Cherokee Laredo 1999

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List of elements for Body Computer Wiring Diagrams for Jeep Grand Cherokee Laredo 1999:

10a
A/c sw sig
A/c system
A/c/ system
Amb temp sen ret
Amb temp sen sig
Anti-theft system
Battery
Bcm flash enable
Body control module
C10
C103
C15
Computer data lines system
Coolant level sw
Ctsy lps ctrl
Ctsy lps driver
D19
D25
Data link connector
Defog rly ctrl
Defogger system
Door ajar sw
Door locks system
E19
Exterior lights system
Fog lamp relay
Fog lamp sw sen
Fog lp rly ctrl
Fuse
Fuse 10a
G10 g10
G18
G26
G302 (below center console)
G39
G52
G69
G73
G76
G77
G78
Ground
Hazard sw sense
Headlamp sw
Headlamp sw mux
Headlights system
Hi beam rly ctrl
Hi beam sw sen
High beam relay
Horn rly ctrl
Horns system
Hot at all times
Hot in run and acc
Hot in start and run
Ignition (run/acc)
Ignition (st/run)
Instrument cluster system
Int lps load shed
Interior light system
Interior lights system
Junction block (behind left side of dash)
Key-in ign sw
L109
L110
L27
L40
L80
L91
Lf seat heater sw
Liftgate ajar sw
Liftgate ctsy lp
Lo beam rly ctrl
Low beam relay
Low beam/daytime running lamp relay
M20
P132
P133
P134
Panel lps dim sig
Panel lps driver
Park lamp relay
Park lp rly ctrl
Park lp rly out
Pci bus
Radio ctrl mux
Radio ctrl mux ret
Rear defog sw sen
Rear window defogger relay
Red
Rf seat heater sw
S205
S211
Seat belt sw
Seat heat sw grd
Seats system
Sound system
Sunroof delay relay
Sunroof rly ctrl
Tan/red
Ultralight sen grd
Ultralight sen ret
V10
V11
V14
V52
V55
V59
Vtss ind driver
W/ drl
W/o drl
Warning system
Washer pump ctrl
Washer sw out
Wiper int rly ctrl
Wiper park sw
Wiper sw mux
Wiper sw ret
Wiper/washer system
X10
X20

COMPUTER DATA LINES

Computer Data Lines for Jeep Grand Cherokee Laredo 1999

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List of elements for Computer Data Lines for Jeep Grand Cherokee Laredo 1999:

(right side of engine) g120
Airbag control module (below center floor console, near brake)
Automatic zone control module
Body control module (left end of dash, attached to j/b)
Center of dash)
Conroller anti-lock brake (left side of engine compt)
D19
D20
D21
D25
D32
D33
Data link connector (under left side of dash, near steering column)
Diagnostic junction port (at bottom of steering column)
Driver door module (in door)
F33
Fuse 10a
Hot at all times
Instrument cluster
Junction block (behind left side of dash)
Not used
Passenger door module (in door)
Pci bus
Pnk
Pnk/ red
Pnk/red
Powertrain control module (right side of firewall)
Radio
S125 (near breakout to powertrain control module)
S130 (near breakout to powertrain control module)
S305 (body harn, left "b" pillar)
S312 (body harn, left side of dash)
S324 (body harn, right kick panel)
Sci receive
Sci transmit
Seat module (under seat)
Sentry key immobilizer module (near ignition lock cylinder housing)
Transmission control module (on right inner fender)
Vehicle information center

COOLING FAN

Cooling Fan Wiring Diagram for Jeep Grand Cherokee Laredo 1999

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List of elements for Cooling Fan Wiring Diagram for Jeep Grand Cherokee Laredo 1999:

(near power distribution center) s132
(right headlamp area) g107
A16
Battery
C23
C24
Fuse 40a
Gnd
Hot at all times
Power distribution center (at right front corner of engine compartment, next to battery)
Powertrain control module (on right side of firewall)
Radiator fan motor (behind radiator)
Radiator fan relay (below bumper fascia, right headlamp)
Relay ctrl
Relay output

CRUISE CONTROL

Cruise Control Wiring Diagram for Jeep Grand Cherokee Laredo 1999

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List of elements for Cruise Control Wiring Diagram for Jeep Grand Cherokee Laredo 1999:

(left side of dash)
Accel
Cancel
Clock- spring
Coast
Cruise control switch 1
Cruise control switch 2
Dump
G107 (behind right headlamp)
G301 (below right front seat)
K29
Nca
On/off
Powertrain control module (or right side of firewall)
Resume/
S132
S213 (near clock spring)
S214 (near clock spring)
S314 (left side of dash)
S315
S329
Sensor ground
Set
Spd ctrl sw sig
Speed ctrl pwr
Stop sw sense
Stoplight switch (top of brake pedal arm)
Tan/red
V32
V35
V36
V37
Vacuum
Vacuum ctrl
Vehicle speed control servo (below battery tray)
Vent
Vent ctrl
W/ power seats
W/o power seats

DEFOGGERS

Defogger Wiring Diagram for Jeep Grand Cherokee Laredo 1999

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List of elements for Defogger Wiring Diagram for Jeep Grand Cherokee Laredo 1999:

12v
Atc
Automatic zone control module
Body computer module
Computer data line system
Defog relay input
Defog sw sens
Defogger relay ctrl
Defogger sense sw
Diagnostic junction block (at bottom of steering column)
Fuse 10a
Fuse 40a
G300 (below left front seat)
Ground
Hot at all times
Junction block (behind left side of dash)
Left front door module
Left power mirror
Manual temperature control
Ntc
Pci bus
Pdc bus
Power distribution center (next to battery)
Rear window defogger
Rear window defogger relay
Red/ tan
Red/tan
Right front door module
Right power mirror
S210 (right side of dash)
S312 (left side of dash)
S324 (right kick panel)
S401

ENGINE PERFORMANCE

4.0L

4.0L, Engine Performance Wiring Diagrams (1 of 3) for Jeep Grand Cherokee Laredo 1999

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List of elements for 4.0L, Engine Performance Wiring Diagrams (1 of 3) for Jeep Grand Cherokee Laredo 1999:

(engine harn, right rear of engine compt)
(right side of engine)
+5v
3-4 shift sol
Asd rly out
C24
Ckp sens
Cmp sens
Coil drv 1
Coil drv 2
Coil drv 3
Cooling fan system
Ect sens
F991
Fan rly ctrl
Fuel injectors
Fuse 10a
Fuse 15a
Fuse 30a
Fused b+
G120
G60
Gen field drv
Generator
Gov pres sens
Gov pres sig
Gov pres sol
Ground
Hot at all times
Iac 1 drv
Iac 2 drv
Iac 3 drv
Iac 4 drv
Iat sens
Ign sw out
Inj 1 drv
Inj 2 drv
Inj 3 drv
Inj 4 drv
Inj 5 drv
Inj 6 drv
Instrument cluster, anti-lock brakes and transmission control systems (vehicle speed signal)
K11
K12
K13
K14
K141
K20
K21
K22
K24
K241
K30
K341
K38
K39
K40
K41
K44
K58
K59
K60
K88
K91
K92
K93
Map sens
O2 sens 1/1
O2 sens 1/2
O2 sens 2/1
O2 sens 2/2
Oil pres sens
Out spd sens
Output speed sensor (left rear of trans- mission)
P/n switch
Park/ neutral position switch (lower left side of transmission)
Pnk
Power distribution center (next to battery)
Powertrain control module (on right side of firewall)
Rail coil (right rear of engine)
S102
S109 (top of engine in fuel injector harness)
S122 (top of trans)
S126 (right rear fender area)
Sens ground
Sensor ground
Solenoid ctrl
Spd sens gnd
Starting system
T121
T13
T14
T22
T24
T25
T54
Tan
Tan/pnk
Tan/red
Tcc sol
Tcc sol ctrl
Temp sig
Tp sens
Trans ctl rly
Trans temp
Trans- mission control relay
Trans- mission solenoid (on trans- mission valve body)
Var force sol
Vss signal
Z11
Z12

4.0L, Engine Performance Wiring Diagrams (2 of 3) for Jeep Grand Cherokee Laredo 1999

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List of elements for 4.0L, Engine Performance Wiring Diagrams (2 of 3) for Jeep Grand Cherokee Laredo 1999:

(engine harn, right rear of engine compt)
(front body harn, left side of dash)
(on throttle body) idle air control motor
(right rear fender area)
(under driver's seat) g300
Automatic shut down relay
Camshaft position sensor (near oil filter)
Crankshaft position sensor (on transmission bellhousing)
Cruise control system
Engine coolant temperature sensor (on thermostat housing)
Engine oil pressure sensor (right rear of engine)
Fuel pump module (top of fuel tank)
Fuel pump relay
Fuse 10a
Fuse 15a
Fuse 20a
Fuse 30a
Hot at all times
Hot in start or run
Intake air temperature sensor (in intake manifold plenum)
Junction block (behind left side of dash)
Manifold absolute position sensor (side of throttle body)
No 2 drv
No 3 drv
No 4 drv
No1 drv
Power distribution center (next to battery)
S105 (in map sensor break- out)
S107 (left side engine harn)
S112
S128
S131 (near pdc)
S307
S315
Throttle position sensor (on throttle body)

4.0L, Engine Performance Wiring Diagrams (3 of 3) for Jeep Grand Cherokee Laredo 1999

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List of elements for 4.0L, Engine Performance Wiring Diagrams (3 of 3) for Jeep Grand Cherokee Laredo 1999:

(bottom of steering column) diagnostic junction port
(in breakout to 2/2 oxygen sensor harness)
(in breakout to oxygen sensors)
(near breakout to o2 sensors)
(on left fender side shield)
(right rear of engine) g117
(top of engine, in fuel injector harness)
(under left side of dash, near steering column)
1/1 2/1 o2 rly
1/2 2/2 o2 rly
A/c pres sig
A/c system
Asd relay ctrl
Asd rly out
Bat tem sens sig
Battery temperature sensor (below battery tray)
Brake sw sens
C13
C18
Calif
Check engine ind
Comp cl ctrl
Cruise control system
D21
D25
D32
Data link connector
Duty cycle evap/purge solenoid
Evap emis
Ex calif
Ex. calif.
F42
Fuel lev sensor
Fuel pmp rly
Fuse 10a
Fuse 20a
G302 (below center console)
Gen source
Hot at all times
Hot in start or run
Instrument cluster
Junction block (behind left side of dash)
K106
K107
K151
K21
K226
K25
K251
K29
K31
K51
K52
Leak det pmp
Leak det pump
Leak detection pump (below air cleaner housing)
Nca
O2s heater relay down- stream (cali- fornia)
O2s heater relay up- stream (cali- fornia)
Overdrive switch
Oxygen sensor 1/1 upstream (in exhaust downpipe) (federal) (in exhaust manifold front outlet) (california)
Oxygen sensor 1/2 downstream (downstream of in line converter) (federal) (outlet of front mini converter) (california)
Oxygen sensor 2/1 upstream (california) (in exhaust manifold rear outlet)
Oxygen sensor 2/2 downstream (california) (outlet of rear mini converter)
Pci bus
Pnk
Power distribution center (next to battery)
Powertrain control module (on right side of firewall)
S104
S106
S108
S110
S111
S129
S130 (near pdc)
S203
S316
Sci receive
Sci transmit
Shift interlock system
Spd ctrl pow
Spd ctrl sw
T99
Tan/red
Torque man req
V32
V35
V36
V37
Vac sol ctrl
Vent sol ctrl

4.7L

4.7L, Engine Performance Wiring Diagrams (1 of 3) for Jeep Grand Cherokee Laredo 1999

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List of elements for 4.7L, Engine Performance Wiring Diagrams (1 of 3) for Jeep Grand Cherokee Laredo 1999:

(between inj 4 & 6)
(left side engine harness)
(right side of engine)
(top of engine in fuel injector harness)
+5v
C24
Capacitor
Ckp sens
Cmp sens
Coil drv 1
Coil drv 2
Coil drv 3
Coil drv 4
Coil drv 5
Coil drv 6
Coil drv 7
Coil drv 8
Coil on plug 1
Coil on plug 2
Coil on plug 3
Coil on plug 4
Coil on plug 5
Coil on plug 6
Coil on plug 7
Coil on plug 8
Cooling fans system
Ect sens
F991
Fan rly ctrl
Fuel injectors
Fuse 10a
Fused b+
G120
G60
Gen field drv
Generator
Ground
Hot at all times
Iac 1 drv
Iac 2 drv
Iac 3 drv
Iac 4 drv
Iat sens
Ign sw out
Inj 1 drv
Inj 2 drv
Inj 3 drv
Inj 4 drv
Inj 5 drv
Inj 6 drv
Inj 7 drv
Inj 8 drv
K11
K12
K13
K14
K141
K17
K18
K20
K21
K22
K24
K241
K30
K341
K38
K39
K40
K41
K44
K58
K59
K60
K91
K92
K93
K94
K95
K96
K97
K98
Map sens
Nca
O2 sens 1/1
O2 sens 1/2
O2 sens 2/1
O2 sens 2/2
Oil pres sens
P/n switch
Power distribution center (next to battery)
Powertrain control module (on right side of firewall)
S109
S118
S121
S124
Sens ground
T24
Tan
Tan/pnk
Tan/red
Tp sens
Trans ctl rly
Transmission control system
Transmission, anti-lock brake and instrument cluster systems (speed signal)
Vss signal
Z11
Z12

4.7L, Engine Performance Wiring Diagrams (2 of 3) for Jeep Grand Cherokee Laredo 1999

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List of elements for 4.7L, Engine Performance Wiring Diagrams (2 of 3) for Jeep Grand Cherokee Laredo 1999:

(in break- out to tp sensor) s120
(in breakout to crankshaft position sensor) s119
(left side engine harn)
(on throttle body) idle air control motor
(right rear fender area)
(top of trans- mission)
(under driver's seat) g300
Automatic shut down relay
Camshaft position sensor (front top of right cylinder head)
Crankshaft position sensor (above starter motor)
Cruise control system
Engine coolant temperature sensor (near front of intake manifold)
Engine oil pressure sensor (above oil filter)
Fuel pump module (top of fuel tank)
Fuel pump relay
Fuse 10a
Fuse 15a
Fuse 20a
Fuse 30a
Hot at all times
Hot in start or run
Intake air temperature sensor (in intake manifold plenum)
Junction block (behind left side of dash)
Manifold absolute position sensor (front of intake manifold)
No 2 drv
No 3 drv
No 4 drv
No1 drv
Power distribution center (next to battery)
S105
S107 (top of engine in fuel injector harness)
S116
S122
S128
S307
S315 (front body harn, left dash)
Starting system
Throttle position sensor (on throttle body)
Transmission control system
Transmission solenoid assembly (on transmission valve body)

4.7L, Engine Performance Wiring Diagrams (3 of 3) for Jeep Grand Cherokee Laredo 1999

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List of elements for 4.7L, Engine Performance Wiring Diagrams (3 of 3) for Jeep Grand Cherokee Laredo 1999:

(bottom of steering column) diagnostic junction port
(in breakout to 2/2 oxygen sensor harness)
(in breakout to oxygen sensors)
(on left fender side shield)
(right rear of engine compt)
(right rear of engine) g117
(top of engine, in fuel injector harness)
1/1 2/1 o2 rly
1/2 2/2 o2 rly
A/c pres sig
A/c system
Asd relay ctrl
Asd rly out
Bat tem sens sig
Battery temperature sensor (below battery tray)
Brake sw sens
C13
C18
Calif
Charging system
Check engine ind
Ckp sens sig
Comp cl ctrl
Cruise control system
D21
D25
D32
Data link connector (under left
Duty cycle evap/purge solenoid
Evap emis
Ex. calif.
F42
Fuel lev sensor
Fuel pmp rly
Fuse 10a
Fuse 20a
Gen source
Hot at all times
Hot in start or run
Instrument cluster
Junction block (behind left side of dash)
K106
K107
K151
K21
K22
K226
K24
K25
K251
K29
K31
K51
K52
Leak det pmp
Leak det pump
Leak detection pump (below air cleaner housing)
Nca
O2s heater relay down- stream (cali- fornia)
O2s heater relay up- stream (cali- fornia)
Oxygen sensor 1/1 upstream (below right exhaust manifold) (federal) (below left exhaust manifold) (california)
Oxygen sensor 1/2 downstream (downstream of in-line converter) (federal) (outlet of left mini converter) (california)
Oxygen sensor 2/1 upstream (california) (below right exhaust manifold)
Oxygen sensor 2/2 downstream (california) (outlet of right mini converter)
Pci bus
Pnk
Power distribution center (next to battery)
Powertrain control module (on right side of firewall)
S106
S108
S111
S112
S125 (at breakout to pcm conn c3)
S129
S130 (near pdc)
S131 (near pdc)
S316
Sci receive
Sci transmit
Sensor ground
Shift interlock system
Side of dash, near steering column)
Spd ctrl pow
Spd ctrl sw
T10
T99
Tan/red
Torque man req
Torque req
Tp sens sig
Transmission control module (on right inner fender)
V32
V35
V36
V37
Vac sol ctrl
Vent sol ctrl

EXTERIOR LIGHTS

Back-up Lamps Wiring Diagram for Jeep Grand Cherokee Laredo 1999

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List of elements for Back-up Lamps Wiring Diagram for Jeep Grand Cherokee Laredo 1999:

4.0l
4.7l
Automatic day/night mirror
Back- up lamp
G300 (under left seat)
G301 (under right seat)
Left rear lighting module
Park/neutral position switch
Right rear lighting module
S307
S310 near left rear taillamp)
S328 (body harness, right cowl area)
S332
Trailer tow connector
Transmission solenoid/trs assembly
W/rear outlet power

Exterior Lamps & Trailer connector Wiring Diagram for Jeep Grand Cherokee Laredo 1999

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List of elements for Exterior Lamps & Trailer connector Wiring Diagram for Jeep Grand Cherokee Laredo 1999:

(+)
6
87a
Body control module
Brake lamp ewitch
Center high mounted stop lamp
Combination flasher
Combination flasher switch ground
Controller anti-lock brake
Fuse 15a
Fused
Fused ignition switch output
G102 (center of left front fender)
G107 (behind right headlamp)
G202 (at air bag control module)
G206 (center of dash, near air bag control module)
G300 (under drivers seat)
G301 (under drivers seat)
G301 (under passengers seat)
Hot at all times
Hot in on and run
Instrument panel
Junction block
Left front lighting module
Left front marker lamp
Left front park lamp
Left front park/ turn lamp
Left rear lighting module
Left rear tail/ stop lamp
Left rear turn lamp
Left turn indi- cator
Left turn signal
Left turn switch sensor
License lamp 1
License lamp 2
Multi-function switch
Output
Park lamp relay
Park lamp relay control
Pnk
Right front lighting module
Right front marker lamp
Right front park lamp
Right front park/ turn lamp
Right rear lighting module
Right rear tail/ stop lamp
Right rear turn lamp
Right turn signal
Right turn switch sensor
S133 (near battery temperature sensor)
S134 (center of left front fender)
S203
S205 (right center of dash)
S306
S307 (left rear taillamp)
S309 (left rear taillamp)
S313 (left dash, body harness) s311 (near left rear tail lamp)
S326 (right front door jam)
S327 (body harness right cowl area)
S332 (near right b pillar)
S401
S412 (near license plate)
Tan
To trailer tow brake lamp relay
To trailer tow left turn relay
To trailer tow right turn relay
W/rear power outlet

Trailer Tow Wiring Diagram for Jeep Grand Cherokee Laredo 1999

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List of elements for Trailer Tow Wiring Diagram for Jeep Grand Cherokee Laredo 1999:

(in trailer tow harness)
4.0l
4.7l
87a
B/u lamp feed
Body control module
Brake lamp switch
C/b 15a
Cigar lighter relay
Combination flasher
Controller, anti-lock brakes
Fuse 15a
Fuse 20a
G200 (center of dash, below air bag control module)
G300 (under drivers seat)
Hot at all times
Junction block
Left turn signal
Park lamp relay
Park lamp relay control
Park/ neutral position switch
Red
Right turn signal
S205 (right center of i/p)
S306 (near left rear taillamp)
S307
S309 (near left rear tail lamp)
S310
S311 (near left rear taillamp)
S313 (left dash, body harness)
S327 (body harness, right cowl area)
S328
S406 ( in trailer tow warness)
S408 (behind trim panel, left quarter panel)
S409
S410
To center high mtd. stop lamp
To left rear tail- lamp)
To left rear turning lamp
To right rear turning lamp
Trailer brake provision
Trailer tow brake lamp relay
Trailer tow circuit breaker
Trailer tow connector
Trailer tow left turn relay
Trailer tow right turn relay
Transmission solenoid/ trs assembly

GROUND DISTRIBUTION

Ground Distribution Wiring Diagram (1 of 4) for Jeep Grand Cherokee Laredo 1999

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List of elements for Ground Distribution Wiring Diagram (1 of 4) for Jeep Grand Cherokee Laredo 1999:

(azc) blower motor controller
(mtc) temperature valve actuator
1 c1
14 c1
2 c1
25 c1
31 c3
45 c3
87a
Ash receiver lamp
Automatic zone control module
Body control module
Cigar lighter
Cigar lighter relay
Driver heated seat switch
Front power outlet
G206 (center of dash, below airbag control module)
Ignition switch
Instrument cluster
Junction block
Left multi- function switch
Low beam daytime running lamp relay
Manual temperature control
Of dash)
Override switch
Parking lamp relay
Passenger heated seat switch
Power connector
Prndl/ transfer case illumination
S201 (center of dash)
S205 (center of dash, near radio)
S211 (upper right side of dash)
Sentry key immobilizer module

Ground Distribution Wiring Diagram (2 of 4) for Jeep Grand Cherokee Laredo 1999

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List of elements for Ground Distribution Wiring Diagram (2 of 4) for Jeep Grand Cherokee Laredo 1999:

Base
Brake lamp switch
Driver cylinder lock switch
Driver door lock/motor ajar switch
Driver door module
G301 (under passenger seat)
Other
Passenger door lock/motor ajar switch
Passenger door module
Passenger lumbar switch
Passenger power seat switch
Passenger rear door lock/motor ajar switch
Passenger rear power window switch
Power amplifier
Power seats
Premium
Radio
Rear power outlet
Right rear lighting module
S329 (body harness, below passenger side door frame)
S330 (body harness, near front door)
S331 (body harness at b pillar)
S332 (bottom of right "b" pillar)
S336 (driver door)
S338 (passenger door)
S341 (under passenger seat)
S357 (bottom right rear door)
W/ rear power outlet
W/o rear power outlet

Ground Distribution Wiring Diagram (3 of 4) for Jeep Grand Cherokee Laredo 1999

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List of elements for Ground Distribution Wiring Diagram (3 of 4) for Jeep Grand Cherokee Laredo 1999:

(4.0l)
(4.7l)
(california)
(in pdc) transmission control relay
(in pdc) wiper high/low relay
A/c compressor clutch
A/c low pressure cycle clutch switch
Airbag control module
Battery
Controller anti-lock brake
Coolant level sensor
Data link connector
Downstream 1/2 oxygen sensor
Downstream 2/2 oxygen sensor
G102 (left shock tower)
G107 (behind right headlamp)
G111 (near battery)
G117 (4.0l) (right rear of engine)
G120 (right side of engine)
G206 (center of dash)
Horn
Left fog lamp
Left front lighting module
Powertrain control module
Pressure transducer
Radiator fan motor
Radiator fan relay
Rear washer pump motor
Right fog lamp
Right front lighting module
S103 (in b/o of harness on right side of engine)
S114 (right rear of engine) (4.7l)
S132 (right front wheel well)
S133 (near b/o for battery temperature sensor)
S134 (near left center of fender)
Transfer case switch
Transmission control module
Under- hood lamp
Upstream 1/1 oxygen sensor
Upstream 2/1 oxygen sensor
Vehicle speed control servo
Washer fluid level switch
Wind- shield wiper motor
Windshield washer pump

Ground Distribution Wiring Diagram (4 of 4) for Jeep Grand Cherokee Laredo 1999

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List of elements for Ground Distribution Wiring Diagram (4 of 4) for Jeep Grand Cherokee Laredo 1999:

(midline/premium) driver lumbar switch
(premium) seat module
12 c2
19 c1
3 c2
Automatic day/night
B base 1 other
Center high mounted stop lamp
Driver power seat switch
Driver rear door lock motor/ajar switch
Driver rear power window switch
Fuel pump module
G300 (under drivers seat)
Left liftgate ajar switch
Left rear lighting module
License lamp
Liftgate flip-up ajar switch
Liftgate flip-up release solenoid
Mirror
Other
Power seats
Premium power seats
Rear window defogger
Rear wiper motor
Right liftgate ajar switch
S300 (left b pillar)
S301 (under left front seat)
S307 (near left rear taillamp)
S355 (under drivers seat)
S356 (bottom of left rear door)
S401 (lift- gate harness)
S402 (lift- gate harness)
S408 (left rear quarter panel, behind trim)
S409 (left rear quarter panel, behind trim)
S410 (at trailer tow connector)
S412 (near license plate lamps)
Seat belt switch
Seat module
Sunroof
Sunroof control module
Sunroof switch
Trailer tow brake lamp relay
Trailer tow connector
Trailer tow left turn relay
Trailer tow right turn relay
Vehicle information center

HEADLIGHTS

Headlight Wiring Diagram, with DRL for Jeep Grand Cherokee Laredo 1999

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List of elements for Headlight Wiring Diagram, with DRL for Jeep Grand Cherokee Laredo 1999:

Auto
Auto headlamp sw out
Automatic headlamp light/sensor vtss led (top of dash)
Battery
Body control module (on left end of dash, attached to junction block)
D25
Diagnostic junction port (at bottom of steering column)
Flash
Fog
Fog lamp relay
Fog lamp relay control
Fog lamp sense
Fuse 10a
Fuse 15a
Fuse 50a
G100 (front of left front fender)
G101 (front of right front fender
G302 (below center console)
G52
Ground
Head
Headlamp dimmer sw
Headlamp sw ground
High
High beam indicator
High beam relay
High beam relay control
Hot at all times
Instrument cluster
Junction block (behind left side of dash)
L109
L110
L27
L40
L80
Left fog lamp
Left front headlight module
Left high beam headlight
Left low beam headlight
Left multi-function switch
Low
Low beam ctrl
Low beam out
Low beam relay control
Low beam/daytime running lamp relay
Off
Park
Pci bus
Power distribution center (next to battery)
Red
Right fog lamp
Right front headlight module
Right high beam headlight
Right low beam headlight
S133
S134
S205
Sensor ground
Sensor signal

Headlight Wiring Diagram, without DRL for Jeep Grand Cherokee Laredo 1999

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List of elements for Headlight Wiring Diagram, without DRL for Jeep Grand Cherokee Laredo 1999:

Auto
Auto headlamp sw out
Automatic headlamp light/sensor vtss led (top of dash)
Body control module (on left end of dash, attached to junction block)
D25
Diagnostic junction port (at bottom of steering column)
Flash
Fog
Fog lamp relay
Fog lamp relay control
Fog lamp sense
Fuse 10a
Fuse 15a
Fuse 50a
G100 (front of left front fender)
G101 (front of right front fender)
G302 (below center console)
G52
Head
Headlamp dimmer sw
Headlamp sw ground
High
High beam indicator
High beam relay
High beam relay control
Hot at all times
Instrument cluster
Junction block (behind left side of dash)
L109
L110
L27
L40
L80
Left fog lamp
Left front headlight module
Left high beam headlight
Left low beam headlight
Left multi-function switch
Low
Low beam relay
Low beam relay control
Off
Park
Pci bus
Power distribution center (next to battery)
Red
Right fog lamp
Right front headlight module
Right high beam headlight
Right low beam headlight
S133
S134
S205
Sensor ground
Sensor signal

HORN

Horn Wiring Diagram for Jeep Grand Cherokee Laredo 1999

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List of elements for Horn Wiring Diagram for Jeep Grand Cherokee Laredo 1999:

Body control module
Clockspring
Fuse 15a
G107 (behind right headlamp)
Horn no1 (lower right front of engine compt)
Horn no2 (lower right front of engine compt)
Horn relay (in pdc)
Horn switch
Hot at all times
Junction block (left side of dash)
Nca
Power distribution center (right front corner of engine compt, next to battery)
Red
Relay ctrl
S132

INSTRUMENT CLUSTER

Instrument Cluster Wiring Diagram for Jeep Grand Cherokee Laredo 1999

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List of elements for Instrument Cluster Wiring Diagram for Jeep Grand Cherokee Laredo 1999:

(body harn, near right kick panel) s324
(dash harn, behind left side of dash)
(engine compt harn, near breakout to controller anti-lock brakes)
(engine compt right rear of engine compt) s130
(in fuel injector harn) s324
4.7l
Abs warning
Airbag control module (below floor console, near park brake)
Airbag warning
Body control module
Brake warn
Brake warning
Check engine
Check gauges
Computer data lines system
Computer datalines
Controller anti-lock brake (left side of engine compt, mounted to hydraulic control unit)
Coolant level sense
Coolant level sensor (in fluid reservoir)
Cruise
D25
Diagnostic junction port (at bottom of steering column)
Ect
Engine controls
Engine coolant temperature gauge
Engine coolant temperature sensor (4.0l: on thermostat housing) (4.7l: front of manifold)
Engine oil pressure sensor (4.0l: right rear side of engine) (4.7l: lower left front of engine, above oil filter)
Eop
Exterior lights
F33
Fog lamp
Fuel gauge
Fuel lvl
Fuel pump module (top of fuel tank)
Fuse 10a
Fused (b+)
G107 (behind right headlamp)
G117 (right rear of engine)
G206 (center of dash, below airbag control module)
G300 (under drivers seat)
G60
Ground
High beam
Hot at all times
Hot in run or start
Ign (st/run)
Illumination
Illumination lamps (5 bulbs)
Instrument cluster
Junction block (behind left side of dash)
K226
L60
L61
Left turn
Low coolant level
Low fuel warning
Oil pressure gauge
Overdrive
Park brake switch (on park brake bracket)
Part time 4wd ind
Pci bus
Pnk/red
Powertrain control module (right side of firewall)
Right turn
S103
S117 (4.7l) (engine compt harn, near breakout to transmission control module)
S132
S203
S210 (dash harn, behind left side of dash)
S211
S300
S325
Seat belt sense
Seat belt switch (in drivers buckle)
Seat belt warning
Sens gnd
Sentry key immobilizer module (near ignition lock cylinder housing)
Speedometer
T107
Tachometer
Tan
Transfer case switch (on transfer case)
Transmission control module (right front inner fender)
Transmission temperature ind
Voltmeter
Vss
Vss sig

Overhead Console Wiring Diagram for Jeep Grand Cherokee Laredo 1999

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List of elements for Overhead Console Wiring Diagram for Jeep Grand Cherokee Laredo 1999:

Computer data lines system
D25
Drivers seat)
F70
Fuse 10a
Fuse 15a
Fused b+
Fused ign
G300 (under
Ground
Hot at all times
Hot in run or start
Junction block (behind left side of dash)
Other
Pci bus
Pnk
Premium power seats
S301
S346
S349
Vehicle information center (at headliner)

INTERIOR LIGHTS

Courtesy Lamps Wiring Diagram for Jeep Grand Cherokee Laredo 1999

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List of elements for Courtesy Lamps Wiring Diagram for Jeep Grand Cherokee Laredo 1999:

(rear harn, in liftgate) s404
Ajar sens
Body control module
Cargo lamp
Driver door courtesy lamp
Driver door lock motor/ ajar switch
Driver door module (in driver's door)
Driver rear door lock motor/ ajar switch
Fuse 10a
Fuse 15a
Fuse 50a
Fused b+
G102 (left
G300 (under driver's seat)
G301 (under
G301 (under passenger seat)
G302 (below center console)
Glove box lamp
Ground
Hot at all times
Hot in run or acc
Hot in run or start
Junction block (behind left side of dash)
Lamp drvr
Lamp gnd
Left courtesy lamp
Left handle courtesy lamp
Left liftgate ajar witch
Left visor/ vanity lamp
Liftgate flip-up ajar witch
Overhead map/ courtesy lamp
Passenger door courtesy lamp
Passenger door lock motor/ ajar switch
Passenger rear door lock motor/ ajar switch
Passenger seat)
Passenger's door module (in passenger's door)
Pnk
Pnk/ red
Power distribution center (next to battery)
Right courtesy lamp
Right handle courtesy lamp
Right liftgate ajar witch
Right visor/ vanity lamp
S134
S205
S207
S211
S336
S338
S346
S347 (body harn, at head liner)
S348 (body harn, at head liner)
S356
S357
S402
Shock tower)
Tan/ red
Tan/red
Underhood lamp
Upper dash)
Wiper/ washer

Instrument Illumination Wiring Diagram for Jeep Grand Cherokee Laredo 1999

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List of elements for Instrument Illumination Wiring Diagram for Jeep Grand Cherokee Laredo 1999:

(1999) (2000)
Ash receiver lamp
Atc
Automatic zone control module
Body control module
Dome on day brightness dimmer dome inhibit
Driver heated seat switch
Fuse 10a
Fuse 29 fuse 28 10a
G206 (center of dash, below air bag control module)
Hot at all times
Hot in run or acc
Hot in run or start
Junction block (behind left side of dash)
Left multi- function switch
Manual temperature control
Mtc
Passenger heated seat switch
Prndl/transfer case illumination
Radio
Red
S202 (dash harn, lower dash)
S203
S205
S211

MEMORY SYSTEMS

Memory Mirrors Wiring Diagram for Jeep Grand Cherokee Laredo 1999

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List of elements for Memory Mirrors Wiring Diagram for Jeep Grand Cherokee Laredo 1999:

Automatic day/night mirror
Body control module (left end of dash, attached to junction block)
C117
C118
Computer data lines
D25
Diagnostic junction port (bottom of steering column)
Down
Driver door module (in driver's door)
Driver power mirror
F21
Fuse 50a
Fused b+
G301 (under passenger seat)
Ground
Heater
Hot at all times
Junction block (behind left side of dash)
Left
Memory 1
Memory 2
Memory position 1
Memory position 2
Memory set
Memory set switch
Memory switch rtn
Memory switch set
Mirror common
Mirror heater 12v
Mirror heater gnd
Mirror horiz drvr
Mirror horiz pos sig
Mirror sensor gnd
Mirror vert drvr
Mirror vert pos sig
Nca
Of dash)
P64
P65
P69
P91
P93
P95
Passenger power mirror
Passenger's door module (in passenger's door)
Pci bus
Power distribution center (next to battery)
Red
Right
S210 (dash harn, upper dash)
S336

Memory Seat Wiring Diagram for Jeep Grand Cherokee Laredo 1999

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List of elements for Memory Seat Wiring Diagram for Jeep Grand Cherokee Laredo 1999:

(body harn, left "b" pillar)
(body harn, left side of dash)
(in seat harn)
Back
Circuit breaker 2 20a
Computer data lines
D25
Driver power seat switch
Driver seat front riser motor sensor (under left seat)
Driver seat front vertical motor
Driver seat horizontal motor
Driver seat horizontal motor sensor (under left seat)
Driver seat rear riser motor sensor (under left seat)
Driver seat rear vertical motor
Driver seat recliner motor
Driver seat recliner motor sensor (under left seat)
Driver's door module (in driver's door)
F135
F21
F35
Frnt riser pos sig
Fuse 50a
Fused b+
Fwd
G300 (under driver's seat)
G301 (under
G301 (under passenger seat)
Gnd
Ground
Hot at all times
Junction block (behind left side of dash)
L seat htr b+
L seat htr gnd
L seat temp sens
Memory 1
Memory 2
Memory position 1
Memory position 2
Memory set
Memory set switch
Memory switch rtn
Memory switch set
Nca
P11
P111
P113
P115
P117
P119
P121
P13
P130
P131
P135
P141
P143
P15
P17
P19
P21
P25
P26
P27
P28
P29
P41
P43
P47
P86
Passenger seat)
Pci bus
Power distribution center (next to battery)
R seat htr b+
R seat htr gnd
R seat temp sens
Rear riser sig
Recline
Recliner dwn drvr
Recliner dwn sens
Recliner pos sig
Recliner up drvr
Recliner up sens
Red
S301
S305
S312
S336
S351
S352
S353
S355
Seat frnt
Seat frnt dwn drvr
Seat frnt dwn sens
Seat frnt up drvr
Seat frnt up sens
Seat horiz
Seat horiz fwd drvr
Seat horiz fwd sens
Seat horiz rear drvr
Seat horiz rear sens
Seat horiz sig
Seat module (under driver's seat)
Seat pos sensor gnd
Seat rear
Seat rear dwn drvr
Seat rear dwn sens
Seat rear up drvr
Seat rear up sens
Seat sensor 5v
Seat switch b+
Seats (heated)

POWER DISTRIBUTION

Power Distribution Wiring Diagram (1 of 3) for Jeep Grand Cherokee Laredo 1999

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List of elements for Power Distribution Wiring Diagram (1 of 3) for Jeep Grand Cherokee Laredo 1999:

(rear of right front fender) red s127
(under driver red seat) s353
(under passenger seat) s342
A/c com- pressor clutch relay
Automatic shutdown relay
Base
Battery
Blower motor
Blower motor controller
Circuit breaker 2 20a
Controller anti-lock brake
Data link connector
Down- stream o2s heater relay
Driver lumbar switch
Driver power seat switch
Engine starter motor
Engine starter motor relay
Except base
Fog lamp relay
From a fuse 15 (diagram 1 of 3)
Fuel pump relay
Fuse 10a
Fuse 15a
Fuse 15a (spare)
Fuse 20a
Fuse 30a
Fuse 40a
Fuse 50a
Generator
High beam relay
Horn relay
Instrument cluster
Junction block
Low beam relay
Low beam/ daytime running relay
Midline
Nca
Park lamp relay
Passenger lumbar switch
Passenger power seat switch
Pnk/red
Power distribution center
Power- train control module
Premium
Premium i only
Radiator fan relay
Red
Red c
Red/tan
S100
Seat module
Stop lamp switch
Sunroof delay relay
To cigar lighter relay (j/b) (diagram 2 of 3)
To fuse 18 (j/b) (diagram 3 of 3)
To fuse 7 (diagram 1 of 3)
To fuse 8 (j/b) (diagram 2 of 3)
To ignition switch (diagram 2 of 3)
Transmission control module
Transmission control relay
Up- stream o2s heater relay
W/ auto a/c
W/ manual a/c

Power Distribution Wiring Diagram (2 of 3) for Jeep Grand Cherokee Laredo 1999

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List of elements for Power Distribution Wiring Diagram (2 of 3) for Jeep Grand Cherokee Laredo 1999:

(bottom of left pnk "b" pillar) s304
(left side of dash) s316
(rear of right front fender) s129
(right rear of engine compt) s116
4.7l only
A/c compressor clutch relay
Acc
Airbag control module
Automatic day/night mirror
Automatic shutdown relay
Body control module
Brake shift interlock solenoid
Cargo lamp
Cigar lighter
Cigar lighter relay
Circuit breaker 1 20a
Downstream o2s heater relay (calif only)
Duty cycle evap/purge solenoid
From fuse 14 (pdc) (diagram 1 of 3)
From fuse 15 (pdc) (diagram 1 of 3)
From fuse 2 (pdc) (diagram 1 of 3)
From fuse 8 (pdc) (diagram 1 of 3)
Fuel pump relay
Fuse 10a
Fuse 15a
G300 (under right side of driver's seat)
Glove box lamp
Ignition switch
Instru- ment cluster
Junction block
Left courtesy lamp
Left handle courtesy lamp
Left visor/ vanity lamp
Liftgate lock motor
Off
Overhead map/ courtesy lamp
Pnk
Power distribution center
Powertrain control module
Radio
Rear window defogger relay
Rear wiper motor
Red
Red/tan
Right courtesy lamp
Right handle courtesy lamp
Right multi- function switch
Right visor/ vanity lamp
Run
S203 (right side of dash)
S205 (right side of dash)
S346 (behind pnk headliner)
S403 (left side pnk of liftgate)
Sentry key im- mobilizer module
Start
To fuse 19 (j/b) (diagram 3 of 3)
To fuse 31 (j/b) (diagram 3 of 3)
To fuse 5 (diagram 3 of 3)
Trailer tow circuit breaker
Transmission control module
Upstream o2s heater relay (calif only)
Vehicle infor- mation center
Vehicle informaton center
Wind- shield wiper motor
Wiper on/of relay

Power Distribution Wiring Diagram (3 of 3) for Jeep Grand Cherokee Laredo 1999

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List of elements for Power Distribution Wiring Diagram (3 of 3) for Jeep Grand Cherokee Laredo 1999:

(right side of dash) s204
(right side of dash) s206
(right side of dash) s209
4.0l
4.7l
Airbag control module
Automatic headlamp light sensor/ vtss led
Automatic zone control module
Body control module
Combination flasher
Controller anti-lock brake
Driver door module
Driver heated seat switch
Engine starter motor relay
From fuse 12 (pdc) (diagram 1 of 3)
From ignition switch (diagram 2 of 3)
From j fuse 8 (diagram 2 of 3)
Front power outlet
Fuse 10a
Fuse 15a
Fuse 20a
Fuse 25a
Junction block
Manual temperature control
Nca
Park/ neutral position switch
Passenger door module
Passenger heated seat switch
Pnk
Pnk/red
Power amplifier
Power connector
Power distribution center
Radio
Rear power outlet
Sentry key immobilizer module
Temperature valve actuator
Trailer tow brake lamp relay
Transmission control module (4.7l only)
Transmission solenoid/ trs assembly
Underhood lamp
W/ auto a/c
W/ manual a/c

POWER DOOR LOCKS

Power Door Lock Wiring Diagram for Jeep Grand Cherokee Laredo 1999

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List of elements for Power Door Lock Wiring Diagram for Jeep Grand Cherokee Laredo 1999:

Body control module
Computer data lines system
D25
Diagnostic junction port (at bottom of steering column)
Fuse 15a
Fuse 50a
Fused b+
G300 (below left front seat)
G301 (below right front seat)
G301 g301 (below right (below right front seat) front seat)
G76
G77
G78
Ground
Hot at all times
Junction block
Left front door cylinder switch
Left front door lock motor/ ajar switch
Left front door module
Left liftgate ajar switch
Left rear door lock motor/ ajar switch
Lf ajar sw
Lf key cyl sw sense
Lf lock out
Lf unlock out
Liftgate ajar
Liftgate flip-up ajar switch
Liftgate flip-up push button switch
Liftgate flip-up release solenoid (in liftgate)
Liftgate lock motor/ limit switch
Lock out
Lr door ajar
Pci bus
Pnk
Power distribution center
Rf ajar sw
Right front door lock motor/ ajar switch
Right front door module
Right liftgate ajar switch
Right rear door lock motor/ ajar switch
Rr door ajar
S210 (right side of dash)
S302 (near left "b" pillar)
S303 (near left "b" pillar)
S312 (left side of dash)
S317 (right side of dash)
S318 (right side of dash)
S324 (right kick panel)
S336
S338
S338 s338
S339 (right front door)
S356
S357
S402
S404 (in lifgate)
Tan/ red
Tan/red
Unlock out

POWER MIRRORS

Power Mirror Wiring Diagram for Jeep Grand Cherokee Laredo 1999

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List of elements for Power Mirror Wiring Diagram for Jeep Grand Cherokee Laredo 1999:

4.0l
4.7l
Automatic day/night mirror
Back up feed
Body control module (left end of dash, attached to junction block)
C117
C118
Computer data lines
D25
Day/ night (+)
Day/ night (-)
Diagnostic junction port (bottom of steering column)
Down
Driver door module (in driver's door)
Driver power mirror
Exterior lights
F21
Fuse 10a
Fuse 50a
Fused b+
Fused ign
G300 (under driver seat)
G301 (under passenger seat)
Gnd
Ground
Heater
Hot at all times
Hot in run or start
Junction block (behind left side of dash)
Left
Mirror common
Mirror heater 12v
Mirror heater gnd
Mirror horiz drvr
Mirror horiz pos sig
Mirror sensor gnd
Mirror vert drvr
Mirror vert pos sig
Near left rear taillamp)
Of dash)
P64
P65
P69
P91
P93
P95
Park/ neutral position switch
Passenger power mirror
Passenger's door module (in passenger's door)
Pci bus
Power distribution center (next to battery)
Red
Right
S210 (dash harn, upper dash)
S307
S328 (body harn, at right kick panel)
S336
S349
Transmission solenoid/trs assembly

POWER SEATS

Heated Seats Wiring Diagram for Jeep Grand Cherokee Laredo 1999

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List of elements for Heated Seats Wiring Diagram for Jeep Grand Cherokee Laredo 1999:

(1999) c3
(2000)
(left side of dash, at air bag module) g202
0 off 1 low 2 high
Body control module (on junction block)
Diagnostic junction port
Driver door module
Driver heated seat back
Driver heated seat cushion
Driver heated seat switch
Driver seat heater battery (+) driver
Driver seat heater switch mux
Driver seat temperature sensor input
Fuse 10a
Ground
Hot in run
Junction block (behind left side of dash)
Panel lamps driver
Passenger heated seat back
Passenger heated seat cushion
Passenger heated seat switch
Passenger seat heater battery (+) driver
Passenger seat heater switch mux
Passenger seat temperature sensor input
Pci bus
S202 (center of dash)
S203 (center of dash)
S204 (right center of dash)
S210 (right upper dash)
S305 (left b pillar)
S312 (body harness, left dash)
S351 (near breakout for seat belt switch)
Seat heater switch sensor ground
Seat module (under driver's seat)
Sentry key immobilizer module
Vehicle information center

Lumbar Wiring Diagram for Jeep Grand Cherokee Laredo 1999

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List of elements for Lumbar Wiring Diagram for Jeep Grand Cherokee Laredo 1999:

15 c1
24 c2
Circuit breaker 20a
Driver lumbar motor
Driver's lumbar switch
G300 (under driver's seat)
G301 (under passenger's seat)
Hot at all times
Junction block (behind left side of dash)
Passenger lumbar motor
Passenger's lumbar switch
Red
S341 (under passenger's seat)
S342 (under passenger's seat)
S353 (under driver's seat)
S355 (under driver's seat)

Power Seat Wiring Diagram, Base for Jeep Grand Cherokee Laredo 1999

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List of elements for Power Seat Wiring Diagram, Base for Jeep Grand Cherokee Laredo 1999:

1 forward 2 rearward 3 rear up 4 front up 5 rear down 6 front down 7 raise 8 lower
C1 driver side
C2 passenger side
Circuit breaker 20a
Driver
Driver or passenger power seat switch
G300 (under driver seat)
G301 (under passenger seat)
Hot at all times
Junction block (behind left side of dash)
Passenger
Power seat front riser motor
Power seat horizontal motor
Power seat rear riser motor
S300 (left b pillar)
S329 (body harness near front door)
S355 (under driver seat)
Side

Power Seat Wiring Diagram, Midline for Jeep Grand Cherokee Laredo 1999

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List of elements for Power Seat Wiring Diagram, Midline for Jeep Grand Cherokee Laredo 1999:

1 rear up 2 rear down 3 forward 4 rearward 5 front up 6 front down 7 recliner forward 8 recliner rearward
15 c1
24 c2
Circuit breaker 20a
Driver
Driver or passenger power seat switch
Driver side
G300 (under driver seat)
G301 (under passenger seat)
Hot at all times
Junction block (behind left side of dash)
Passenger
Passenger side
Power seat front riser motor
Power seat horizontal motor
Power seat rear riser motor
Power seat recliner motor
S300 (left b pillar)
S329 (body harness near front door)
S341 (under passenger seat)
S355 (under driver seat)
Side

POWER TOP/SUNROOF

Power Top/Sunroof Wiring Diagrams for Jeep Grand Cherokee Laredo 1999

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List of elements for Power Top/Sunroof Wiring Diagrams for Jeep Grand Cherokee Laredo 1999:

Accesory delay
Body control module
Close
Fuse 20a
G300 (under driver seat)
Ground
Hot at all times
Junction block (behind left side of dash)
Motor driver
Nca
Open
S345
Sunroof control module (near front of sunroof opening)
Sunroof delay relay
Sunroof motor (near front of sunroof opening)
Sunroof open
Sunroof switch
Sunroof vent
Tan

POWER WINDOWS

Power Window Wiring Diagram for Jeep Grand Cherokee Laredo 1999

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List of elements for Power Window Wiring Diagram for Jeep Grand Cherokee Laredo 1999:

power distribution
(near right kick panel)
(r/f door)
Batt
Body control module (behind dash on junction block)
Center (next to battery)
Diagnostic junction port (at bottom of steering column)
Driver door module
Fuse 50a
G300 (near left front seat)
G301 (near right front seat)
Gnd
Hot at all times
Illumination
Junction block (behind left side of dash)
L/f wind dn
L/f wind up
L/r wind dn
L/r wind up
Left front power window motor
Left rear power window motor
Left rear power window switch
Nca
Passenger door module
Pci bus
R/f wind dn
R/f wind up
R/r win up
R/r wind dn
Right front power window motor
Right rear power window motor
Right rear power window power window switch switch
S312 (near stoplight switch)
S324
S330 (right front door sill)
S336 (left front door)
S338
S356 (bottom of left rear door)
S357 (bottom of right rear door)

RADIO

Radio Wiring Diagrams, with Amplifier for Jeep Grand Cherokee Laredo 1999

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List of elements for Radio Wiring Diagrams, with Amplifier for Jeep Grand Cherokee Laredo 1999:

(at bottom of steering column) diagnostic junction port
(steering column harn, near breakout to remote radio switches)
Amplifier
Antenna
Audio in l
Audio in r
Audio out l
Audio out r
B(+)
Body control module
Ccd bus (+)
Clockspring
Compact disc player
Enable
Fuse 15a
Fuse 25a
Fused b(+)
Fused ign
G301 (under passenger seat)
Ground
Hot at all times
Hot in run or acc
Ign switch
Junction block (behind left side of dash)
L dash (+)
L dash (-)
L front (+)
L front (-)
L rear (+)
L rear (-)
Left dash panel speaker
Left front door speaker
Left rear door speaker
Mux return
Nca
Panel lamps
Panel lamps feed
Park lamp
Parklamp relay output
Pci bus
R dash (+)
R dash (-)
R front (+)
R front (-)
R rear (+)
R rear (-)
Radio
Radio 12v
Radio control mux
Radio mux
Red
Remote radio switch no1
Remote radio switch no2
Right dash panel speaker
Right front door speaker
Right rear door speaker
S215
S216
S331
S334
Shield

Radio Wiring Diagrams, without Amplifier for Jeep Grand Cherokee Laredo 1999

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List of elements for Radio Wiring Diagrams, without Amplifier for Jeep Grand Cherokee Laredo 1999:

(steering column harn, near breakout to remote radio switches)
Antenna
Audio in l
Audio in r
Audio out l
Audio out r
B(+)
Body control module
Ccd bus (+)
Clockspring
Compact disc player
Diagnostic junction port (at bottom of steering column)
Fuse 15a
Fuse 25a
Fused b(+)
Fused ign
G301 (under passenger seat)
Ground
Hot at all times
Hot in run or acc
Ign switch
Junction block (behind left side of dash)
L front (+)
L front (-)
L rear (+)
L rear (-)
Left front door speaker
Left rear door speaker
Mux return
Nca
Panel lamps
Panel lamps feed
Park lamp
Parklamp relay output
Pci bus
R front (+)
R front (-)
R rear (+)
R rear (-)
Radio
Radio control mux
Radio mux
Red
Remote radio switch no1
Remote radio switch no2
Right front door speaker
Right rear door speaker
S215
S216
Shield

SHIFT INTERLOCKS

Shift Interlock Wiring Diagram for Jeep Grand Cherokee Laredo 1999

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List of elements for Shift Interlock Wiring Diagram for Jeep Grand Cherokee Laredo 1999:

Brake lamp switch (top of brake pedal arm)
Brake lamp switch sense
Brake shift interlock solenoid (at top of steering column)
Fuse 21 10a
G301 (under passenger seat)
Hot in run or start
Junction block (behind left side of dash)
Powertrain control module (right side of firewall)
S314 (dash harn, left side of dash)
S329

STARTING/CHARGING

Charging Wiring Diagram for Jeep Grand Cherokee Laredo 1999

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List of elements for Charging Wiring Diagram for Jeep Grand Cherokee Laredo 1999:

Asd rly ctrl
Asd rly out
Auto shut down fuel pump relay (in pdc)
Auto- matic shut down relay (in pdc)
Bat- tery
Ccd bus (+)
Check gauges ind ctrl
Check gauges indicator
Diagnostic junction port (under dash)
Engine starter motor
Fuse 10a
Fuse 15a
Fuse 30a
Fuse 7 20a
Fusible link
G101 (right fender side shield)
G120 (right side of engine)
Gen fld dvr
Gen fld sre
Generator
Hot at all times
Hot in run or start
Instrument cluster
Junction block
Meter ctrl
Passenger door module
Power distri- bution center
Powertrain control module (right rear corner of engine compt)
Red
S100 (between fusible link and generator)
S128 (right rear fender area)
S201
S324 (right front door jam)
Volt

Starting Wiring Diagram for Jeep Grand Cherokee Laredo 1999

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List of elements for Starting Wiring Diagram for Jeep Grand Cherokee Laredo 1999:

Acc
Battery
Engine starter motor
Engine starter motor relay (in pdc)
Fuse 10a
Fuse 40a
G101 (right fender side shield)
G120 (right side of engine)
Hd in
Ignition switch
Junction block
Off
P/ n
Park/ neutral position switch (left side of transmission)
Park/ neutral switch sense
Pl in
Power distri- bution center
Power- train control module (right rear of engine compartment)
Red
Run
S122 (rear of engine, top of transmission)
S127 (right rear fender area)
Start
Trans solenoid/ trs assembly (4.7l)
Transmission control module (4.7l)

SUPPLEMENTAL RESTRAINTS

Supplemental Restraint Wiring Diagram for Jeep Grand Cherokee Laredo 1999

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List of elements for Supplemental Restraint Wiring Diagram for Jeep Grand Cherokee Laredo 1999:

(center of dash) g206
Air bag control module (floor console, near park brake)
Air bag lamp control
Clockspring
D25
Data link connector (under left side of dash, near steering column)
Diagnostic junction port (bottom of steering column)
Driver air bag (top of steering column)
F14
F23
Fuse 10a
Hot in run
Ign
Instrument cluster
Junction block (behind left side of dash)
Nca
Or start
Passenger air bag (right side of dash)
Pci bus
R42
R43
R44
R45

TRANSMISSION

4.0L

4.0L, A/T Wiring Diagram for Jeep Grand Cherokee Laredo 1999

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List of elements for 4.0L, A/T Wiring Diagram for Jeep Grand Cherokee Laredo 1999:

(engine harn, front of trans)
3-4 shift ctrl
3-4 shift sol
C1 (black)
C2 (white)
C3 (gray0
Engine controls system
Engine starter motor relay
Fuse 10a
Fuse 15a
Fuse 30a
G117 (right rear of engine)
G302 (below center console)
Gen source
Generator
Gov pres ctrl
Gov pres sol
Gov press sens
Gov press sol
Hot at all times
Hot in run or start
Instrument cluster
Junction block (behind left side of dash)
K30
K88
Od off sw
Output shaft speed sensor (left rear of transmission)
Overdrive switch (center console)
P/n sens
Park/neutral position switch (lower left side of transmission)
Part time 4wd indicator
Pnk
Power distribution center (right front corner of engine compt)
Powertrain control module (right side of firewall)
S102
S103
S112
S122 (rear of engine, top of transmission)
S126 (right rear fender area)
S203
Sens gnd
Sensor gnd
Speed sens gnd
Speed sens sig
T121
T13
T14
T22
T24
T25
T54
T60
T99
Temp sens
Torq conv ctrl
Torque conv sol
Trans relay out
Trans rly ctrl
Trans temp sens
Transfer case switch
Transmission control relay
Transmission solenoid assembly (on transmission)

4.7L

4.7L, A/T Wiring Diagram (1 of 2) for Jeep Grand Cherokee Laredo 1999

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List of elements for 4.7L, A/T Wiring Diagram (1 of 2) for Jeep Grand Cherokee Laredo 1999:

(in pdc) engine starter motor relay
(right side of engine)
2c press sw
2c sol
2c sol ctrl
2l press
4c press
4c press sw
4c sol
4c sol ctrl
A30
Backup lamp feed
Backup lamps
Backup lmp rly
Bu rly
Ckp sens signal
D20
D21
D25
F45
F991
Fuse 10a
Fuse 30a
Fused (b+)
Fused ign (run)
Fused ign (st)
Fused ign sw
G117 (right rear of engine)
G120
Gnd
Hot at all times
Hot in run
Hot in start
Input spd sns
Junction block (behind left side of dash)
K22
K24
K30
Line press sig
Ll/rr sol
Lr press
Lr press sw
Lr/cc sol ctrl
Ms sol
Ms sol ctrl
Od off sw
Od press
Od press sw
Od sol
Od solenoid
Out shaft spd
Pci bus
Pnk
Power distribution center (right front corner of engine compt)
Pres ctrl
Press ctrl sol
Red
S103
S115 (near tcm)
S122 (rear of engine, top of trans)
Sci receive
Sci transmit
Sensor gnd
Spd sensor gnd
T10
T118
T119
T120
T13
T130
T138
T14
T140
T141
T150
T159
T16
T29
T41
T42
T47
T52
T54
T59
T60
Temp sens
Torq mgmt req
Tps signal
Trans ctrl rly
Trans rly ctrl
Trans rly out
Trans temp sens
Transmission control module (right inner fender panel)
Transmission control relay
Transmission solenoid/ trs assembly (transmission)
Trs t1
Trs t1 sense
Trs t3
Trs t3 sense
Trs t41 sense
Trs t42
Trs t42 sense
Ud ctrl
Ud press
Ud press sw
Ud sol ctrl
Vss sig
Z13
Z14

4.7L, A/T Wiring Diagram (2 of 2) for Jeep Grand Cherokee Laredo 1999

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List of elements for 4.7L, A/T Wiring Diagram (2 of 2) for Jeep Grand Cherokee Laredo 1999:

(at breakout to pcm)
(in breakout to ckp sensor)
(in breakout to ckp sensor) s119
(in breakout to controller anti-lock brake) s325
(left side of engine compt) controller anti-lock brake
(near tcm)
(on throttle body) throttle position sensor
(rear of engine)
(right side of engine block) crankshaft position sensor
Automatic shut down relay (in pdc)
Ckp signal
D21
D25
Data link connector (below left side of dash)
Diagnostic junction port (base of steering column)
F991
Fuel pump relay (in pdc)
Fuse 10a
Fused ign
G120 (right side of engine)
G302 (below center console)
Gnd
Hot in run or start
Input speed sensor (left front of transmission)
Instrument cluster
Junction block (behind left side of dash)
K22
K24
Output shaft speed sensor (left rear of transmission)
Overdrive switch (center console)
Passenger door module
Pci bus
Pnk
Powertrain control module (right side of firewall)
Press sig
Pressure transducer (right rear side of transmission)
S105
S112
S113 (near tcm)
S114
S116
S117 (near tcm)
S120
S125
S130 (right rear of engine compt)
S203
S324 (right kick panel)
Sci transmit
Sensor gnd
Strt rly ctrl
T24
T99
Torq sense
Tps signal
Vss out
Vss sig

TRUNK, TAILGATE, FUEL DOOR

Trunk, Tailgate, Fuel Door Wiring Diagrams for Jeep Grand Cherokee Laredo 1999

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List of elements for Trunk, Tailgate, Fuel Door Wiring Diagrams for Jeep Grand Cherokee Laredo 1999:

(below left front seat)
Fuse 15a
G300
Hot at all times
Junction block (behind left side of dash)
Liftgate flip-up push button switch (in liftgate)
Liftgate lock motor (in liftgate)
Liftgate release solenoid (in liftgate)
Limit switch
Pnk
S402
S403

WARNING SYSTEMS

Warning System Wiring Diagrams for Jeep Grand Cherokee Laredo 1999

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List of elements for Warning System Wiring Diagrams for Jeep Grand Cherokee Laredo 1999:

(1999)
(2000)
(right kick panel)
(right side of dash) s210
10a
Auto
Body control module
Center console)
Computer data lines system
Coolant level sense
Coolant level sensor (in fluid reservoir)
D25
Diagnostic junction port (at bottom of steering column)
Driver's seat)
Fuse 10a
Fuse 28
Fuse 29
Fused (b+)
G10
G107 (behind
G18
G26
G300 (under
G300 (under drivers seat)
G301 (below
G302 (below
G302 (below center console)
G52
G76
G77
G78
G80
Ground
Head
Headlamp switch
Headlamp switch mux
Hot at all times
Hot in run & acc
Hot in run & start
Hot in run or start
Ign (st/run)
Ignition switch
Instrument cluster
Junction block (behind left side of dash)
Key-in ignition switch
L80
Left front door lock motor/ ajar switch
Left front door module
Left liftgate ajar switch
Left multi-function switch
Left rear door lock motor/ ajar switch
Lf ajar
Liftgate ajar
Liftgate flip-up ajar
Liftgate flip-up ajar switch
Lr door ajar
Off
Park
Pci bus
Pnk/ red
Pnk/red
Rf ajar
Right front door lock motor/ ajar switch
Right front door module
Right front seat)
Right headlamp)
Right liftgate ajar switch
Right rear door lock motor/ ajar switch
Rr door ajar
S132
S205
S211
S312 (left side of dash)
S324
S336
S338 s338
S356
S357
S402
S404 (in lifgate)
Seat belt switch
Seat belt switch (chime)
Seat belt warning
Tan/ red
Tan/red

WIPER/WASHER

Wiper/Washer Wiring Diagram for Jeep Grand Cherokee Laredo 1999

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List of elements for Wiper/Washer Wiring Diagram for Jeep Grand Cherokee Laredo 1999:

(in liftgate harness) s404
Body control module
C.b. 20a
Delay
Delay switch
Fuse 10a
Fuse 15a
G102 (left shock tower)
G107 (behind right headlamp)
G300 (under driver's seat)
G302 (below center console)
Hot at all times
Hot in run or acc
Hot in run or start
Interior lights (liftgate ajar switch)
Junction block (behind left side of dash)
Mist switch
Off
Off intermittent 1 intermittent 2 intermittent 3 intermittent 4 intermittent 5 low high
Park switch
Pnk
Rear washer pump (bottom of washer reservoir)
Rear wiper motor (on liftgate inner panel)
Rear wiper switch
Right multi- function switch
S132
S134
S205
S212 (dash harn, upper dash)
S402
S403
Tan/ red
Tan/red
Wash switch
Washer fluid level switch (bottom of washer reservoir)
Windshield washer pump (bottom of washer reservoir)
Windshield wiper motor (left side of firewall)
Wiper high/low relay (in pdc)
Wiper on/off relay (in pdc)
Wiper switches