All Wiring Diagrams for Jeep Wrangler Sahara 1999

AIR CONDITIONING

Heater Wiring Diagram for Jeep Wrangler Sahara 1999

List of elements for Heater Wiring Diagram for Jeep Wrangler Sahara 1999:

(left side of dash) g202
(right side of dash, below right front speaker) g201
Blend door actuator
Blower motor
Blower motor relay
Defrost
Fuse 10a
Fuse 40a
Fuse block (under right side of dash)
Heat
Heater control panel
High
Hot at all times
Hot in run
Hvac unit (right side of dash)
Interior lights system
Low
Mix
Off
Power distribution center (on right side of engine compartment, on inner fender panel)
Tan
Tan d
Vent

Manual A/C Wiring Diagram for Jeep Wrangler Sahara 1999

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List of elements for Manual A/C Wiring Diagram for Jeep Wrangler Sahara 1999:

(left side of dash) g202
(right center of dash panel) s103
(right rear of engine) g117
(right side of dash, below right front speaker) g201
A/c compressor clutch
A/c compressor clutch relay (in power distribution center)
A/c compressor relay ctrl
A/c heater control
A/c high pressure switch (on a/c compressor discharge line)
A/c low pressure switch (on a/c accumulator)
A/c select input
A/c switch sense
B10
Blend door actuator
Blower motor
Blower motor relay
C13
C22
C23
C90
Defrost
Fuse 10a
Fuse 40a
Fuse block (under right side of dash)
Heat
High
Hot at all times
Hot in run
Hvac unit (under right side of dash)
Interior lights system
Low
Max
Mix
Norm
Off
Power distribution center (on right side of engine compartment, on inner fender panel)
Powertrain control module (in right rear of engine compartment on firewall)
Side of transmission) s132
Tan
Vacuum/ electric mode switch
Vent

ANTI-LOCK BRAKES

Anti-lock Brake Wiring Diagrams for Jeep Wrangler Sahara 1999

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List of elements for Anti-lock Brake Wiring Diagrams for Jeep Wrangler Sahara 1999:

(above pcm)
(near abs con- troller) s112
(near center of dash) s110
Abs diode (under center of dash)
Abs lamp driver
Abs pump motor (on hydraulic control unit)
Abs pump motor relay
Abs pump relay ctrl
Abs pump relay out
Abs system relay
Abs system relay ctrl
Abs system relay out
Abs warning lamp
B10
B116
B120
B243
B245
B248
B249
B251
B254
B41
B42
B43
B48
B58
C10
C11
C12
C13
C14
Computer data lines
Controller anti-lock brake (top left dash panel)
D21
Data link connector (bottom left side of dash)
Exterior lights
F20
Fuse 10a
Fuse 20a
Fuse 30a
Fuse 40a
Fuse block (right side of dash)
G-switch (front of floor pan tunnel)
G-switch 1 sense
G-switch 2 sense
G-switch test signal
G116 (left side of dash panel)
G121 (behind center of dash panel)
G19
Ground
Hot at all times
Hot in run
Hot in run, or start
Hydraulic control unit (left fender side shield)
Ignition
Instrument cluster
L50
Left front abs wheel speed sensor (left front wheel assembly)
Left rear abs wheel speed sensor (left rear wheel assembly)
Lf inlet valve ctrl
Lf outlet valve ctrl
Lt frt whl spd (+)
Lt frt whl spd (-)
Lt rear whl spd (+)
Lt rear whl spd (-)
Pnk
Power distribution center (right side of engine compartment)
Power distribution center (right side of engine compt)
Rear inlet valve ctrl
Rear outlet valve ctrl
Red
Rf inlet valve ctrl
Rf outlet valve ctrl
Right front abs wheel speed sensor (right front wheel assembly)
Right rear abs wheel speed sensor (right rear wheel assembly)
Rt frt whl spd (+)
Rt frt whl spd (-)
Rt rear whl spd (+)
Rt rear whl spd (-)
S106
S108
S109
S114 (near abs pump motor)
S146
Sci transmit
Shift interlock
Stoplight switch (top of brake pedal bracket)
Stoplight switch out
Z22

ANTI-THEFT

Anti-theft Wiring Diagram for Jeep Wrangler Sahara 1999

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List of elements for Anti-theft Wiring Diagram for Jeep Wrangler Sahara 1999:

(left kick panel) g200
(left side of dash, above steering column) s302
(on steering column, near ignition lock cylinder)
Battery
C28
C30
Ccd bus (+)
Ccd bus (-)
Data link connector (bottom left side of dash)
F15
F34
Fuse 10a
Fuse 20a
Fuse block (under right side of dash)
Ground
Headlamp switch
Hot at all times
Hot in run or start
Ignition
Powertrain control module (right rear of engine compt, on firewall)
S130
S303 (left side of dash, above steering column)
Sentry key immobilizer module
Z12

COMPUTER DATA LINES

Computer Data Lines for Jeep Wrangler Sahara 1999

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List of elements for Computer Data Lines for Jeep Wrangler Sahara 1999:

Airbag control module (front of floor pan tunnel)
C27
C28
C29
C30
Ccd bus (+)
Ccd bus (-)
Controller anti-lock brake (top left of dash panel)
D20
D21
Data link connector (bottom left side of dash)
Fuse 10a
G117 (right rear of engine block)
Hot all times
Instrument cluster
Pnk
Power distribution center (right side of engine compt)
Powertrain control module (right rear of engine compt, on firewall)
S130
S204
S302 (left side of dash, above steering column)
S303 (left side of dash, above steering column)
Sci receive
Sci transmit
Sentry key immobilizer module (skim) (on steering column, near ignition sw)

CRUISE CONTROL

Cruise Control Wiring Diagram for Jeep Wrangler Sahara 1999

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List of elements for Cruise Control Wiring Diagram for Jeep Wrangler Sahara 1999:

(right center of dash panel)
C11
C24
C32
Cancel
Cigar lighter/ accessory relay (at left kick panel)
Clock- spring
Coast
Dump
G116 (left side of firewall)
G200 (at left kick panel)
K167
K29
Left speed control switch
Nca
On/off
Powertrain control module (right rear of engine compt, on firewall)
Resume/ accel
Right speed control switch
S106
S147
Sensor ground
Set
Speed ctrl pwr
Stop sw sense
Stoplight switch (top of brake pedal bracket)
Sw sens
Tan/red
V32
V35
V36
V37
Vacuum
Vacuum ctrl
Vehicle speed control servo
Vent
Vent ctrl

DEFOGGERS

Defogger Wiring Diagram for Jeep Wrangler Sahara 1999

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List of elements for Defogger Wiring Diagram for Jeep Wrangler Sahara 1999:

(behind left kick panel)
(behind left side of dash)
Cluster
Defogger relay ctrl
Defogger switch sense
Fuse 10a
Fuse 40a
Fuse block (under right side of dash)
G202
Hot at all times
Hot in run or start
Illum
Ind
Instrument
Interior light system
Power distribution center (right side of engine compartment)
Rear window
Rear window defogger
Rear window defogger relay
Rear window defogger switch
S108
S207
S320
S400

ENGINE PERFORMANCE

2.5L

2.5L, Engine Performance Wiring Diagrams (1 of 3) for Jeep Wrangler Sahara 1999

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List of elements for 2.5L, Engine Performance Wiring Diagrams (1 of 3) for Jeep Wrangler Sahara 1999:

(eng harn, near breakout for park/ neutral position switch)
(eng harn, near breakout to camshaft position sensor)
(near pdc)
(on left side of transmission) park/neutral position switch
(rear of engine)
(right side of eng) ignition coil
A/t
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32
Automatic shutdown relay
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
B31
B32
Cam pos sns
Camshaft position sensor
Coil driver
Crnk pos sns
Distributor
Dnstrm ho2s
Ect sens sig
Engine oil pressure sensor (right side of eng block)
Engine starter motor relay
Exterior lights system (back-up lamps)
F15
Fuel injectors
Fuel pump relay
Fuse 10a
Fuse 20a
Fuse 30a
Fused b(+)
G117 (right rear of eng block)
G117 (right rear of engine block)
G60
Gen field drv
Ground
Headlights system
Hot at all times
Iat sens sig
Idle air 1
Idle air 2
Idle air 3
Idle air 4
Ign power
Inj 1 driver
Inj 2 driver
Inj 3 driver
K10
K11
K12
K13
K14
K141
K167
K19
K20
K21
K22
K24
K39
K40
K41
K44
K59
K60
M/t
Map sens sig
Oil press sns
P/n
P/s switch
Pnp sw sens
Power distribution center (on right side of eng compt, on inner fender panel)
Powertrain control module (in right rear of eng compt, on firewall)
S101
S123
S126 (right rear of cylinder head)
S128 (between breakout to injectors 2 and 3)
S130
S131
S132
S134
S135
Sensor grd
Starting/ charging system
T23
T41
Tan
Tcc ctrl
Torque converter clutch solenoid (in transmission valve body)
Tps sens in
Upstrm ho2s
Vehicle speed sensor (on extension housing of transfer case)
Vss in
Z12

2.5L, Engine Performance Wiring Diagrams (2 of 3) for Jeep Wrangler Sahara 1999

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List of elements for 2.5L, Engine Performance Wiring Diagrams (2 of 3) for Jeep Wrangler Sahara 1999:

(eng harn, at right side of transmission)
(eng harn, near breakout for 14-pin black connector on dash panel)
(eng harn, near breakout for iac motor) s127
(eng harn, near near breakout for inj 6) s129
(rear of engine) s124
(right rear of eng block)
Crankshaft position sensor (at left rear side of engine block)
Cruise control system
Daytime running lamp module (in rear of eng compt, on firewall)
Driver motor 1
Driver motor 2
Driver motor 3
Driver motor 4
Engine coolant temperature sensor (on thermostat housing)
Fuel pump module (on fuel tank)
Fuse 11 10a
Fuse 12 10a
Fuse block (under right side of dash)
G117
G117 (right rear of engine block)
Grd sensor
Heated oxygen sensor 1/1 upstream (on exhaust downpipe)
Heated oxygen sensor 1/2 downstream (on rear of catalytic converter)
Hot in run or start
Idle air control motor (on right side of throttle body assembly)
Intake air temperature sensor (on intake manifold plenum, near throttle body)
Manifold absolute pressure sensor (on side of throttle body assembly)
Nca
S102
S107 (right center of dash panel)
S132
S133
S147
Signal sensor

2.5L, Engine Performance Wiring Diagrams (3 of 3) for Jeep Wrangler Sahara 1999

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List of elements for 2.5L, Engine Performance Wiring Diagrams (3 of 3) for Jeep Wrangler Sahara 1999:

(i/p harn, near grommet breakout for windshield wiper motor)
(left side of steering column) brake shift interlock solenoid
A/c comp rly
A/c compressor clutch relay
A/c cycling switch
A/c sw output
A/c sw sense
A/c-heater control
A142
Asd relay sens
Auto sht rly
Batt temp sens
Battery temperature sensor (on bottom of battery tray)
Brake lamp switch (top of brake pedal bracket)
Brake sw in
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
C25
C26
C27
C28
C29
C30
C31
C32
C90
Ccd bus (+)
Ccd bus (-)
Check engine warning indicator
Controller anti-lock brake (top left of dash panel)
Cruise control system
Cruise feed
Cruise sw in
Cruise vac sol
Cruise vnt sol
D20
D21
Data link connector (partial) (bottom left side of dash)
Duty cycle evap/purge solenoid (on left fender side shield)
Evap sol drvr
Fuel level sens
Fuel pmp rly
Fuse 10 10a
Fuse block (under right side of dash)
G117 (right rear of engine block)
G200 (left kick panel)
Generator
Hot in run or start
Instrument cluster
K105
K106
K118
K226
K29
K31
K51
K52
K72
Leak detect pmp
Leak detect sw
Leak detection module (left side of eng compt, near evap canister)
Pnk
Power steering pressure switch (behind power steering pump)
Powertrain control module (in right rear of eng compt, on firewall)
S132
S302
S303
Sci receive
Sci transmit
Starting/charging system
Tan/red
Throttle position sensor (on throttle body assembly)
V32
V35
V36
V37

4.0L

4.0L, Engine Performance Wiring Diagrams (1 of 3) for Jeep Wrangler Sahara 1999

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List of elements for 4.0L, Engine Performance Wiring Diagrams (1 of 3) for Jeep Wrangler Sahara 1999:

(between breakout for inj 2 & 3)
(eng harn, near breakout to camshaft position sensor)
(near pdc)
(on left side of transmission) park/neutral position switch
(rear of engine)
(right rear of cylinder head)
(right rear of eng block)
(right rear of eng compt)
(right side of eng) ignition coil
A/t
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32
Automatic shutdown relay
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
B31
B32
Cam pos sns
Camshaft position sensor
Coil driver
Crnk pos sns
Distributor
Dnstrm ho2s
Ect sens sig
Engine starter motor relay
Exterior lights system (back-up lamps)
F15
Fuel injectors
Fuel pump relay
Fuse 10a
Fuse 20a
Fuse 30a
Fused b(+)
G117
G60
Gen field drv
Ground
Headlights system
Hot at all times
Iat sens sig
Idle air 1
Idle air 2
Idle air 3
Idle air 4
Ign power
Inj 1 driver
Inj 2 driver
Inj 3 driver
Inj 4 driver
Inj 5 driver
Inj 6 driver
K11
K12
K13
K14
K141
K15
K16
K167
K19
K20
K21
K22
K24
K39
K40
K41
K44
K59
K60
M/t
Map sens sig
Oil press sns
P/n
Pnp sw sens
Power distribution center (on right side of eng compt, on inner fender panel)
Powertrain control module (in right rear of eng compt, on firewall)
S101
S123
S126
S128
S131
S132
S134
S135 (eng harn, near breakout for park/ neutral position switch)
Sensor grd
Starting/ charging system
T23
T41
Tan
Tcc ctrl
Torque converter clutch solenoid (in transmission valve body)
Tps sens in
Upstrm ho2s
Vehicle speed sensor (on extension housing of transfer case)
Vss in
Z12

4.0L, Engine Performance Wiring Diagrams (2 of 3) for Jeep Wrangler Sahara 1999

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List of elements for 4.0L, Engine Performance Wiring Diagrams (2 of 3) for Jeep Wrangler Sahara 1999:

(eng harn, at right side of transmission)
(eng harn, near breakout for 14-pin black connector on dash panel)
(eng harn, near breakout for iac motor)
(eng harn, near near breakout for inj 6)
(right rear of eng block)
Crankshaft position sensor (at left rear side of engine block)
Cruise control system
Daytime running lamp module (in rear of eng compt, on firewall)
Engine coolant temperature sensor (on thermostat housing)
Engine oil pressure sensor (right side of eng block)
Fuel pump module (on fuel tank)
Fuse 11 10a
Fuse 12 10a
Fuse block (under right side of dash)
G117
G117 (right rear of engine block)
Heated oxygen sensor 1/1 upstream (on exhaust downpipe)
Heated oxygen sensor 1/2 downstream (on rear of catalytic converter)
Hot in run or start
Idle air control motor (on right side of throttle body assembly)
Intake air temperature sensor (on intake manifold plenum, near throttle body)
Manifold absolute pressure sensor (on side of throttle body assembly)
Motor 1 driver
Motor 2 driver
Motor 3 driver
Motor 4 driver
Nca
S102
S107 (right center of dash panel)
S124 (rear of engine)
S127
S129
S132
S133
S147
Sensor grd
Sensor signal

4.0L, Engine Performance Wiring Diagrams (3 of 3) for Jeep Wrangler Sahara 1999

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List of elements for 4.0L, Engine Performance Wiring Diagrams (3 of 3) for Jeep Wrangler Sahara 1999:

(i/p harn, near grommet breakout for windshield wiper motor)
(left side of steering column) brake shift interlock solenoid
A/c comp rly
A/c compressor clutch relay
A/c cycling switch
A/c sw output
A/c sw sense
A/c-heater control
A142
Asd relay sens
Auto sht rly
Batt temp sens
Battery temperature sensor (on bottom of battery tray)
Brake lamp switch (top of brake pedal bracket)
Brake sw in
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
C25
C26
C27
C28
C29
C30
C31
C32
C90
Ccd bus (+)
Ccd bus (-)
Check engine warning indicator
Controller anti-lock brake (top left of dash panel)
Cruise control system
Cruise feed
Cruise sw in
Cruise vac sol
Cruise vnt sol
D20
D21
Data link connector (partial) (bottom left side of dash)
Duty cycle evap/purge solenoid (on left fender side shield)
Evap sol drvr
Fuel level sens
Fuel pmp rly
Fuse 10 10a
Fuse block (under right side of dash)
G200 (left kick panel)
Generator
Hot in run or start
Instrument cluster
K105
K106
K118
K226
K29
K31
K51
K52
K72
Leak detect pmp
Leak detect sw
Leak detection module (left side of eng compt, near evap canister)
Pnk
Powertrain control module (in right rear of eng compt, on firewall)
S302
S303
Sci receive
Sci transmit
Starting/charging system
Tan/red
Throttle position sensor (on throttle body assembly)
V32
V35
V36
V37

EXTERIOR LIGHTS

Back-up Lamps Wiring Diagram for Jeep Wrangler Sahara 1999

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List of elements for Back-up Lamps Wiring Diagram for Jeep Wrangler Sahara 1999:

A/t
Back- up lamp
Back-up lamp switch (on right side of transmission)
Fuse 10a
Fuse block
Hot in run
Left rear lamp assembly
M/t
Park/neutral position switch (on left side of transmission)
Right rear lamp assembly
S108
S311 (near left tail lamp connector)
W/ abs
W/o abs

Exterior Lamps Wiring Diagram for Jeep Wrangler Sahara 1999

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List of elements for Exterior Lamps Wiring Diagram for Jeep Wrangler Sahara 1999:

Center high mounted stop lamp
Combination flasher (under left of dash)
Controller anti-lock brake (top left of dash)
Fuse 10a
Fuse 20a
Fuse block
G106 (behind left headlamp)
G107 (behind right headlamp)
G200 (left kick panel)
G201 (right rear of dash panel)
Gnd
Haz- ard
Hazard switch
Head
Head- lamp switch
Hot at all times
Hot run or acc
Immobilizer
In- put
Instrument cluster
Left park/ turn lamp
Left rear lamp assembly
Left side marker lamp
Left turn ind
Normal
Off
Out- put
Park
Pnk
Power distribution center
Right park/ turn lamp
Right rear lamp assembly
Right side marker lamp
Right turn ind
S117
S118 (near left headlamp breakout)
S122 (w/ fog lamps)
S125
S141 (near breakout for left front fog lamp)
S142 (near breakout for right park/ turn signal lamp)
S143 (near breakout for left park/ turn signal lamp)
S144 (near breakout for right park/ turn signal lamp)
S304
S309
S310 (left rear quarter panel, near body grommet)
Stop lamp switch (top of brake pedal bracket)
Stop lamp switch output
Tail/ turn signal lamp
Tan
Turn signal switch
Turn signal/ hazard switch (part of multi- function switch, right side of steering column)
W/ abs only
W/ fog lamps
W/o abs connector not used
W/o fog lamps