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Downloaded from www.Manualslib.com manuals search engine 8W-50 FRONT LIGHTING
INDEX
page page
GENERAL INFORMATION
INTRODUCTION......................... 7
DESCRIPTION AND OPERATION
FOG LAMPS (FRONT).................... 8HEADLAMP LEVELING MOTORS............ 8
HEADLAMPS........................... 7
PARKING LAMPS........................ 7
GENERAL INFORMATION
INTRODUCTION
The headlamp switch has 3 positions, ON, PARK
(parking lights) and OFF. Two circuits, L2 and L20
connect the headlamp switch to the headlamp dim-
mer/optical horn switch located in the multi-function
switch. The multi-function switch feeds the low and
high beams of the headlamps.
DESCRIPTION AND OPERATION
PARKING LAMPS
Circuit A3 in the Power Distribution Center (PDC)
connects to a bus bar in the fuse block. One of the
four circuits powered by the bus bar is circuit F33.
Circuit F33 connects to the headlamp switch. A 40
amp fuse in the PDC protects the A3 circuit. A 15
amp fuse, in cavity 2 of the fuse block, protects the
F33 circuit.
The headlamp switch has 3 positions, ON, PARK
(tail lamps) and OFF, plus a dimmer switch. When
the headlamp switch is in the PARK or ON position,
the switch connects circuit F33 to circuit L7. From
the headlamp switch, circuit L7 branches to power
the front parking lamps and rear tail lamps, lavalier
lamps, side marker lamps, and rear license plate
lamp.
GROUND CIRCUIT
Circuit Z1 provides ground for the parking lamps,
headlamps, lavalier lamps, tail lamps, side marker
lamps and rear license plate lamp although different
grounding points are used. Circuit Z1 also provides
the ground path for the headlamps and turn signals.
HELPFUL INFORMATION
²Check for a blown 40 amp fuse in the PDC.
²Check for a blown fuse in cavity 2 of the fuse
block.
²For the left front parking lamp, turn signal, side
marker lamp and left headlamp, the Z1 circuitgrounding point is the left side of the radiator closure
panel.
²For the right front parking lamp, turn signal,
side marker lamp and right headlamp, the Z1 circuit
grounding point is in the right fender side shield.
²Circuit L7 also feeds the radio, if equipped.
²When the headlamp switch is in the PARK or
ON position, the dimmer circuit, F33, also connects
to circuit E1. Circuit E1 powers the ash receiver
lamp, transmission range indicator lamp, instrument
panel cluster illumination lamps, HVAC control
lamp, heated rear window lamp, and radio lamp. A 4
amp fuse, in cavity 12 of the fuse block, protects cir-
cuit E1.
HEADLAMPS
The headlamp switch has 3 positions, ON, PARK
(parking lights) and OFF. Two circuits, L2 and L20
connect the headlamp switch to the headlamp dim-
mer/optical horn switch located in the multi-function
switch. The multi-function switch feeds the low and
high beams of the headlamps.
HEADLAMP SWITCH IN OFF OR PARKING
LAMP POSITION
Circuit A3 originates in the Power Distribution
Center (PDC) and supplies battery voltage for the
headlamp switch. A 40 amp fuse protects the A3 cir-
cuit. The headlamp switch has an internal 24 amp
circuit breaker that connects circuit A3 to either the
L2 or L20 circuits, depending on switch position.
In the OFF and PARK positions the headlamp
switch feeds the L20 circuit that connects to the
multi-function switch. Circuit L20 powers the high
beam circuit when the operator flashes the head-
lamps with the turn signal stalk of the multi-func-
tion switch. When the operator flashes the
headlamps with the stalk, the multi-function switch
connects the L20 circuit to the L3 circuit. The L3 cir-
cuit feeds the high beam of the headlamps.
HEADLAMP SWITCH IN ON POSITION
When the headlamp switch is in the ON position,
it connects the A3 circuit from the PDC to circuit L2.
PL8W - 50 FRONT LIGHTING 8W - 50 - 7
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Downloaded from www.Manualslib.com manuals search engine 25FUSE15A
25
BATT A0
CENTER
DISTRIBUTION
POWER
5 6
F32
18
PK/DB
STOP
LAMP
SWITCH
L50
20
WT/TN
S101
L50
22
WT/TNL50
20
WT/TN
2C105
L50
20
WT/TN
B
(8W-51-5)TO
S316
BATT A3
22
15A
FUSE
2
FUSE
BLOCK
1
HEADLAMP
SWITCH
1 OFF
2 PARK
3 HEAD
9
4
F33
20
PK/RD
A
(8W-51-5)TO
S306
L7
20
BK/YL
L7
20
BK/YL
2C230
M/T A/T73
(8W-10-9)(8W-10-4)
(8W-30-12)
(8W-30-12)(8W-11-4)(8W-11-2) (8W-10-4) (8W-10-6)
(8W-50-2)
8W - 51 - 4 8W-51 REAR LIGHTINGPL-RHD
978W-1PLR05103
3
2 1
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Downloaded from www.Manualslib.com manuals search engine 16FUSE20A
16
BATT A0
CENTER
DISTRIBUTION
POWER
42 43
46 45
SWITCH LAMP
FOG
FRONT
2
L35
18
BR/RD
9C101
F61
18
WT/ORF61
18
WT/OR
F61
18
WT/OR
12C103
L35 20 BR/RD
3
(IN PDC) RELAY
LAMP
FOG
HEADLAMP LEFT
Z1
18
BK
Z1
18
BK
Z1
18
BK
Z1
18
BK
S127 S107
G101
S115
21
1
2L39
18
LB/WT
L39
18
LB/WTL39
18
LB/WT
Z1
20
BKZ1
20
BK
Z1
18
BK
G103
2
5
L35
20
BR/RD
7
SWITCH LAMP
FOG
REAR
G204
Z3
20
BK/OR
Z3
14
BK/OR
S201
LOGIC
LAMP FOG
LEFT RIGHT
FOG
LAMP
S117
17
(8W-10-11)(8W-10-4) (8W-10-4)
(8W-50-6)
(8W-50-3)
(8W-15-2)
(8W-15-2) (8W-15-4)
(8W-15-7) (8W-15-7) (8W-15-4)
8W - 51 - 6 8W-51 REAR LIGHTINGPL-RHD
978W-1PLR05105
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Downloaded from www.Manualslib.com manuals search engine 3FUSE40A
3
BATT A0
CENTER
DISTRIBUTION
POWER
2FUSE15A
22
BATT A3
BLOCK FUSE
1
A3
12
RD/WT
A3
12
RD/WT
A3
12
RD/WT
S213
3C102
2 8
L2
14
LG
L2
14
LG
S221
467
SWITCH CONTROL
HEATER
A/C
F33
20
PK/RD
1 4
SWITCH HEADLAMP
9FUSE4A
29
9FUSE
BLOCK
E1
20
TN
E2
20
OR
E2
20
OR
S210
SWITCH LAMP
FOG
REAR SWITCH HEADLAMP
4
E2
20
OR
(8W-10-6)(8W-10-4)
(8W-10-4)
(8W-11-4)(8W-11-2) (8W-10-6)
(8W-10-6)
(8W-11-12)
(8W-42-3)(8W-50-2)
(8W-11-11)(8W-11-2)
(8W-11-11)
(8W-51-6) (8W-50-2)
8W - 51 - 8 8W-51 REAR LIGHTINGPL-RHD
978W-1PLR05107
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Downloaded from www.Manualslib.com manuals search engine 10 1
L61
22
LG
L61
22
LG
L61
22
LG
L60
22
TN
L60
22
TN
L60
22
TN
S116 S112
9C103C1013
2121
L61
18
LGL61
18
LGL60
18
TNL60
18
TN
L7
18
BK/YLL7
18
BK/YL
Z1
18
BKZ1
18
BKZ1
18
BKZ1
18
BK
S117 S107
G101 G103
Z1
18
BK
Z1
18
BK
Z1
18
BK
S127 LEFT
REPEATER
LAMP
LAMP SIGNAL
TURN
PARK/
LEFT RIGHT
PARK/
TURN
SIGNAL
LAMPLAMP REPEATER
RIGHT
1
2 31
2 3
2 RIGHT 1 LEFT
SWITCH
HAZARD
SIGNAL/
TURN
S113 S212 S207
(8W-15-4) (8W-15-2)
(8W-15-2) (8W-15-4)(8W-50-5) (8W-40-4) (8W-50-3)
PL-RHD8W-52 TURN SIGNALS 8W - 52 - 3
PLR05202978W-1
Page 185 of 256

Downloaded from www.Manualslib.com manuals search engine 8W-70 SPLICE INFORMATION
INDEX
page
SCHEMATICS AND DIAGRAMS........................................................... 1
Component Page
S101.............................8W-30-12
S102..............................8W-30-4
S103..............................8W-35-3
S104..............................8W-15-3
S105...........................8W-10-2, 10
S106..............................8W-21-2
S107..............................8W-15-2
S108..............................8W-15-2
S109..............................8W-11-9
S110 ..............................8W-30-3
S111 ..............................8W-15-2
S112 ............................8W-40-3, 4
S113 .......................8W-11-5, 8W-50-5
S114 ..............................8W-50-3
S115 ...............8W-10-11, 8W-50-6, 8W-51-6
S116 ...............8W-40-4, 8W-50-3, 8W-52-3
S117 ..............................8W-15-4
S118 ..............................8W-70-2
S119 .......................8W-15-2, 8W-30-3
S120..............................8W-70-2
S121......................8W-10-10, 8W-30-5
S122.............................8W-10-10
S123.............................8W-30-13
S124..............................8W-30-6
S125.......................8W-20-2, 8W-21-2
S126.......................8W-11-9, 8W-30-9
S127 . 8W-15-2, 8W-21-2, 8W-30-3, 8W-40-5, 8W-50-3,
8W-51-6, 8W-52-3
S129.............................8W-30-13
S131..............................8W-10-9
S131..............................8W-41-2
S133......................8W-11-13, 8W-50-4
S134......................8W-10-10, 8W-30-5Component Page
S138.............................8W-11-10
S201..............................8W-15-7
S202..............................8W-15-7
S203..............................8W-10-8
S204..............................8W-42-3
S205..............................8W-15-5
S206.............................8W-11-12
S207.......................8W-40-4, 8W-50-3
S208..............................8W-70-3
S209..............................8W-50-3
S210.............................8W-11-11
S211 ..............................8W-11-8
S212..............................8W-40-4
S213..............................8W-10-6
S214..............................8W-11-6
S217.......................8W-10-6, 8W-11-7
S220..............................8W-44-2
S221.............................8W-11-13
S301..............................8W-51-3
S302..............................8W-61-3
S303..............................8W-61-3
S304..............................8W-44-2
S306.......................8W-11-4, 8W-51-5
S307..............................8W-15-9
S308.......................8W-15-8, 8W-51-5
S309..............................8W-10-8
S310..............................8W-15-6
S313......................8W-11-12, 8W-64-2
S314.......................8W-15-6, 8W-64-2
S315..............................8W-15-8
S316..............................8W-51-5
S317..............................8W-51-7
8W - 70 - 2 8W - 70 SPLICE INFORMATIONPL