REAR LIGHTING
TAIL LAMPS AND LICENSE PLATE LAMPS
Circuit A6 in the Power Distribution Center (PDC)
connects to a bus bar in the fuse block. The fuse
block bus bar powers circuit F33. Circuit F33 con-
nects to the headlamp switch. Fuse 3 in the PDC
protects circuit A3. Fuse 8 in the fuse block protects
circuit F33.
The headlamp switch has three positions: ON,
PARK (parking lamps) and OFF, plus a dimmer
switch. When the headlamp switch is in the PARK or
ON position, the switch connects circuit F33 to cir-
cuit L7. From the headlamp switch, circuit L7
branches to power the front parking lamps and rear
tail and license plate lamps. The lamps are case
grounded.
HELPFUL INFORMATION
²If the vehicle is equipped with factory installed fog
lamps, circuit L7 splices to feed the park lamp relay.
²Jumper harnesses connect the tail, stop, turn sig-
nal lamp to the body harness.
²Check fuse 3 in the PDC.
²Check fuse 8 in the fuse block.
²Circuit L7 also feeds the radio, if equipped.
STOP LAMPS AND CHMSL LAMPS
Circuit A6 from fuse 3 in the Power Distribution
Center (PDC) supplies voltage to the fuse block bus
bar. The bus bar powers circuit F32 through fuse 3 in
the fuse block. Circuit F32 connects to the stop lamp
switch.
When the operator depresses the brake pedal, the
stop lamp switch closes, and connects circuit F32 to
circuit L50. Circuit L50 connects to the CHMSL
lamps and turn signal/hazard flasher. Circuit Z1 pro-
vides ground for the CHMSL lamps. The turn signal/
hazard flasher supplies current to the L62 and L63
circuits. Circuit L62 powers the right stop lamp. Cir-
cuit L63 powers the left stop lamp. The stop lamps
are case grounded.
HELPFUL INFORMATION
²Circuits L50 and Z1 pass through contacts in the
rear door before reaching the CHMSL lamps.
²Check fuse 3 in the PDC.²Check fuse 3 in the fuse block.
²Check for continuity across the stop lamp switch
when it is closed.
²If the vehicle is equipped with anti-lock brakes,
circuit L50 connects to the ABS module.
BACK-UP LAMPS
In the START or RUN position, the ignition switch
connects circuit A1 from fuse 4 in the Power Distri-
bution Center (PDC) to circuit A21. Circuit A21 feeds
a bus bar in the fuse block that powers circuit G5
through fuse 9.
Circuit G5 splices to supply power to the back-up
lamp switch. On automatic transmission vehicles, the
back-up lamp switch is part of an assembly that in-
cludes the PARK/NEUTRAL position switch.
When the operator puts the transmission in Re-
verse, the back-up lamp switch connects circuit G5 to
circuit L1. Circuit L1 feeds the case grounded
back-up lamps.
HELPFUL INFORMATION
²Check fuse 4 in the PDC.
²Check fuse 9 in the fuse block.
²Check for continuity across the back-up lamp
switch when it is closed.
DIAGRAM INDEX
Component Page
ABS Control Module......................8W-51-3
Back-Up Lamps..........................8W-51-4
Back-Up Lamp Switch.....................8W-51-2
Center High Mounted Stop Lamps (CHMSL).......8W-51-3
Fuse 3 (Fuse Block).......................8W-51-2
Fuse 3 (PDC)...........................8W-51-2
Fuse 4 (PDC)...........................8W-51-2
Fuse 9 (Fuse Block).......................8W-51-2
Fuse 8 (Fuse Block).......................8W-51-2
Headlamp Switch.........................8W-51-2
Ignition Switch..........................8W-51-2
Powertrain Control Module..................8W-51-3
Stop Lamp Switch........................8W-51-3
Tail, Stop, and Turn Signal Lamps.............8W-51-4
J8W-51 REAR LIGHTINGÐYJ VEHICLES 8W - 51 - 1
TURN SIGNALS
TURN SIGNALS
In the ACCESSORY or RUN position, the ignition
switch connects circuit A1 from fuse 4 in the Power
Distribution Center (PDC) to circuit A31. Circuit A31
feeds circuit L5 through fuse 4 in the fuse block.
Circuit L5 powers the turn signal flasher. Circuit
L6 from the flasher connects to the turn signal/haz-
ard flasher switch which supplies current to the turn
signals. The switch connects to the turn signal and
side marker lamps on circuits L60, L61, L62 and
L63.
RIGHT TURN SIGNAL
When the operator selects the right turn signal, the
turn signal/hazard flasher switch connects power
from circuit L6 to circuits L60 and L62. Circuit L62
feeds the right rear turn signal/hazard flasher/stop
lamp.
Circuit L60 feeds the right front turn signal/hazard
flasher lamp and side marker lamp. Circuit L60 also
splices to power the turn signal indicator lamp on the
instrument cluster.
LEFT TURN SIGNAL
When the operator selects the left turn signal, the
turn signal/hazard flasher switch connects power
from circuit L6 to circuits L61 and L63. Circuit L63
feeds the left rear turn signal/hazard flasher/stop
lamp.
Circuit L61 feeds the left front turn signal/hazard
flasher lamp and side marker lamp. Circuit L61 also
splices to power the turn signal indicator lamp on the
instrument cluster.
GROUND CIRCUIT
Circuit Z1 provides a ground for the left front park
and turn signal lamp, side marker lamp and head
lamp. The grounding point for circuit Z1 is the radi-
ator left support.
Circuit Z1 provides a ground for the right front
park and turn signal lamp, side marker lamp and
head lamp. The grounding point for circuit Z1 is the
radiator right support.
HELPFUL INFORMATION
²Check fuse 4 in the PDC.
²Check fuse 4 in the fuse block.
HAZARD FLASHERS
Circuit L9 from fuse 5 in the Power Distribution
Center (PDC) supplies power to the hazard flasher.
Circuit L19 from the flasher connects to the turn sig-
nal/hazard flasher switch.When the operator presses the hazard flasher but-
ton, the turn signal/hazard flasher switch connects
circuit L19 to circuits L60, L61, L62, and L63. Cir-
cuit L62 powers the right rear turn signal/stop/haz-
ard lamp. Circuit L63 powers the left rear turn
signal/stop/hazard lamp. Circuit L60 powers the right
front indicator lamp. Circuit L61 powers the left
front lamp.
Circuit L60 also splices to feed the instrument clus-
ter right indicator lamp. Circuit L61 splices to feed
the instrument cluster left indicator lamp.
GROUND CIRCUIT
The rear turn signal/stop/hazard lamps are case
grounded.
Circuit Z1 provides a ground for the left front park
and turn signal lamp, side marker lamp and head
lamp. The grounding point for circuit Z1 is the radi-
ator left support.
Circuit Z1 provides a ground for the right left park
and turn signal lamp, side marker lamp and head
lamp. The grounding point for circuit Z1 is the radi-
ator right support.
HELPFUL INFORMATION
Check fuse 5 in the PDC.
DIAGRAM INDEX
Component Page
ABS Control Module......................8W-52-2
Fuse 3 (Fuse Block).......................8W-52-2
Fuse 3 (PDC)...........................8W-52-2
Fuse 4 (Fuse Block).......................8W-52-2
Fuse 4 (PDC)...........................8W-52-2
Fuse 5 (PDC)...........................8W-52-2
Hazard Flasher..........................8W-52-2
Ignition Switch..........................8W-52-2
Instrument Cluster Turn Signal Lamps...........8W-52-3
Stop Lamp Switch........................8W-52-2
Turn Signal Flasher.......................8W-52-2
Turn Signal/Hazard Flasher Switch..............8W-52-3
J8W-52 TURN SIGNALSÐYJ VEHICLES 8W - 52 - 1
