mirror DODGE RAM 2002 Service User Guide

OPERATION
The ambient photocell sensor is located on the for-
ward-facing (windshield side) of the rear view mirror
housing, and detects the ambient light levels outside
of the vehicle. The headlamp photocell sensor is
located inside the rear view mirror housing behind
the mirror glass and faces rearward, to detect the
level of the light being received at the rear window
side of the mirror. When the circuitry of the auto-
matic day/night mirror detects that the difference
between the two light levels is too great (the light
level received at the rear of the mirror is much
higher than that at the front of the mirror), it begins
to darken the mirror.
The automatic day/night mirror circuitry also mon-
itors the transmission using an input from the
backup lamp circuit. The mirror circuitry is pro-
grammed to automatically disable its self-dimming
feature whenever it senses that the transmission
backup lamp circuit is energized.
The automatic day/night mirror is a completely
self-contained unit and cannot be repaired. If faulty
or damaged, the entire mirror assembly must be
replaced.
DIAGNOSIS AND TESTING - AUTOMATIC
DAY/NIGHT MIRROR
For circuit descriptions and diagrams, refer to the
appropriate wiring information. The wiring informa-
tion includes wiring diagrams, proper wire and con-
nector repair procedures, details of wire harness
routing and retention, connector pin-out information
and location views for the various wire harness con-
nectors, splices and grounds.
(1) Check the fuse in the junction block. If OK, go
to Step 2. If not OK, repair the shorted circuit or
component as required replace the faulty fuse.
(2) Turn the ignition switch to the On position.
Check for battery voltage at the fuse in the junction
block. If OK, go to Step 3. If not OK, repair the open
circuit to the ignition switch as required.
(3) Turn the ignition switch to the Off position.
Disconnect and isolate the battery negative cable.
Unplug the wire harness connector from the auto-
matic day/night mirror (Fig. 1). Connect the battery
negative cable. Turn the ignition switch to the On
position. Check for battery voltage at the fused igni-
tion switch output (run/start) circuit cavity of the
automatic day/night mirror wire harness connector. If
OK, go to Step 4. If not OK, repair the open circuit to
the junction block as required.
(4) Turn the ignition switch to the Off position.
Disconnect and isolate the battery negative cable.
Check for continuity between the ground circuit cav-ity of the automatic day/night mirror wire harness
connector and a good ground. There should be conti-
nuity. If OK, go to Step 5. If not OK, repair the cir-
cuit to ground as required.
(5) Connect the battery negative cable. Turn the
ignition switch to the On position. Set the parking
brake. Place the transmission gear selector lever in
the Reverse position. Check for battery voltage at the
backup lamp switch output circuit cavity of the auto-
matic day/night mirror wire harness connector. If
OK, go to Step 6. If not OK, repair the open circuit
as required.
(6) Turn the ignition switch to the Off position.
Disconnect the battery negative cable. Plug in the
automatic day/night mirror wire harness connector.
Connect the battery negative cable. Turn the ignition
switch to the On position. Place the transmission
gear selector lever in the Neutral position. Place the
mirror switch in the On (LED in the mirror switch is
lighted) position. Cover the forward facing ambient
photocell sensor to keep out any ambient light.
NOTE: The ambient photocell sensor must be cov-
ered completely, so that no light reaches the sen-
sor. Use a finger pressed tightly against the sensor,
or cover the sensor completely with electrical tape.
(7) Shine a light into the rearward facing head-
lamp photocell sensor. The mirror glass should
darken. If OK, go to Step 8. If not OK, replace the
faulty automatic day/night mirror unit.
(8) With the mirror glass darkened, place the
transmission gear selector lever in the Reverse posi-
tion. The mirror should return to its normal reflec-
tance. If not OK, replace the faulty automatic day/
night mirror unit.
Fig. 1 Automatic Day/Night Mirror
8N - 12 POWER MIRRORSBR/BE
AUTOMATIC DAY / NIGHT MIRROR (Continued)

REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Unplug the wire harness connector from the
automatic day/night mirror (Fig. 2).
(3) Remove the set screw that secures the auto-
matic day/night mirror to the windshield support
button.
(4) Push the automatic day/night mirror upwards
far enough for the mounting bracket to clear the sup-
port button and remove the mirror from the wind-
shield.
INSTALLATION
(1) Install the mirror to the support button.
(2) Tighten the set screw.
(3) Reconnect the harness connector to the mirror.
(4) Reconnect the negative battery cable.
POWER MIRROR SWITCH
DESCRIPTION
Both the right and left power outside mirrors are
controlled by a single multi-function switch unit
located on and mounted to the upper flag area of the
driver side door trim panel.
OPERATION
The switch knob is rotated clockwise (right mirror
control), or counterclockwise (left mirror control) toselect the mirror to be adjusted. The switch knob is
then moved in a joystick fashion to control movement
of the selected mirror up, down, right, or left.
The power mirror switch cannot be repaired and, if
faulty or damaged, it must be replaced. The power
mirror switch knob is available for service replace-
ment.
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Pull the control knob rearward to remove it
from the power mirror switch stem (Fig. 3).
(3) Remove the nut that secures the power mirror
switch to the driver side front door trim panel.
(4) Remove the trim panel from the inside of the
driver side front door. (Refer to 23 - BODY/DOOR -
FRONT/TRIM PANEL - REMOVAL) for the proce-
dures.
(5) Pull the trim panel away from the inner door
far enough to access the power mirror switch wire
harness connector.
(6) Unplug the power mirror switch wire harness
connector.
(7) Remove the power mirror switch from the back
of the door trim panel.
Fig. 2 AUTOMATIC DAY/NIGHT MIRROR REMOVE
1 - SCREW
2 - WIRE HARNESS CONNECTOR
3 - AUTOMATIC DAY/NIGHT MIRROR
4 - SUPPORT BUTTON
Fig. 3 POWER MIRROR SWITCH REMOVE/INSTALL
1 - DOOR
2 - SWITCH
3 - DOOR TRIM PANEL
4 - KNOB
5 - NUT
BR/BEPOWER MIRRORS 8N - 13
AUTOMATIC DAY / NIGHT MIRROR (Continued)

INSTALLATION
(1) Insert the power mirror switch to the back of
the door trim panel.
(2) Connect the power mirror switch to the har-
ness connector.
(3) Install the trim panel to the inside of the
driver side door. (Refer to 23 - BODY/DOOR -
FRONT/TRIM PANEL - INSTALLATION).
(4) Install the nut that secures the power mirror
switch to the driver side front door.
(5) Push the control knob on to the power mirror
switch.
(6) Connect the battery negative cable.
SIDEVIEW MIRROR
DESCRIPTION
Each power mirror head contains two electric
motors, two drive mechanisms, and the mirror glass.
One motor and drive controls mirror up-and-down
movement, and the other controls right-and-left
movement.
OPERATION
The power mirrors in vehicles equipped with the
available heated mirror system option also include an
electric heating grid located behind the mirror glass.
This heating grid is energized by the heated mirror
relay in the heater and air conditioner control only
when the ignition switch is in the On position, and
the heated mirror system is turned on. (Refer to 8 -
ELECTRICAL/HEATED MIRRORS - DESCRIP-
TION) for more information.
The power mirror assembly cannot be repaired. If
any component of the power mirror unit is faulty or
damaged, the entire assembly must be replaced.
DIAGNOSIS AND TESTING - SIDEVIEW
MIRROR
For circuit descriptions and diagrams, refer to the
appropriate wiring information. The wiring informa-
tion includes wiring diagrams, proper wire and con-
nector repair procedures, details of wire harness
routing and retention, connector pin-out information
and location views for the various wire harness con-
nectors, splices and grounds.
(1) Check the fuses in the Power Distribution Cen-
ter (PDC) and the junction block. If OK, go to Step 2.
If not OK, repair the shorted circuit or component as
required and replace the faulty fuse(s).(2) Check for battery voltage at the fuse in the
junction block. If OK, go to Step 3. If not OK, repair
the open circuit to the PDC as required.
(3) Disconnect and isolate the battery negative
cable. Remove the driver side door trim panel and
unplug the wire harness connector from the power
mirror switch. Connect the battery negative cable.
Check for battery voltage at the fused B(+) circuit
cavity in the door wire harness half of the power mir-
ror switch wire harness connector. If OK, go to Step
4. If not OK, repair the open circuit to the junction
block as required.
(4) Disconnect and isolate the battery negative
cable. Check for continuity between the ground cir-
cuit cavity in the door wire harness half of the power
mirror switch wire harness connector and a good
ground. There should be continuity. If OK, go to Step
5. If not OK, repair the circuit to ground as required.
(5) Check the power mirror switch continuity as
shown in (Fig. 4). If OK, go to Step 6. If not OK,
replace the faulty switch.
Fig. 4 Power Mirror Switch Continuity
MIRROR SELECTOR KNOB IN9L9POSITION
MOVE LEVER CONTINUITY BETWEEN
UP Pins 3 and 8, 1 and 7, 4 and 7
RIGHT Pins 3 and 7, 2 and 8, 5 and 8
DOWN Pins 3 and 7, 1 and 8, 4 and 8
LEFT Pins 3 and 8, 2 and 7, 5 and 7
MIRROR SELECTOR KNOB IN(R(POSITION
MOVE LEVER CONTINUITY BETWEEN
UP Pins 6 and 8, 1 and 7, 4 and 7
RIGHT Pins 6 and 7, 2 and 8, 4 and 8
DOWN Pins 6 and 7, 1 and 8, 4 and 8
LEFT Pins 6 and 8, 2 and 7, 5 and 7
8N - 14 POWER MIRRORSBR/BE
POWER MIRROR SWITCH (Continued)

(6) Unplug the wire harness connector at the inop-
erative power mirror. Use two jumper wires, one con-
nected to a 12-volt battery feed, and the other
connected to a good body ground. See the Power Mir-
ror Test chart for the correct jumper wire connections
to the power mirror half of the power mirror wire
harness connector (Fig. 5). If the power mirror(s) do
not respond as indicated in the chart, replace the
faulty power mirror assembly. If the power mirror(s)
do respond as indicated in the chart, repair the cir-
cuits between the power mirror and the power mirror
switch for a short or open as required.REMOVAL
For removal procedures (Refer to 23 - BODY/EX-
TERIOR/SIDE VIEW MIRROR - REMOVAL).
Fig. 5 Power Mirror Test
Left or Right Mirror
12 Volts Ground MIRROR
MOVEMENT
Pin 3 Pin 1 UP
Pin 1 Pin 3 DOWN
Pin 2 Pin 1 LEFT
Pin 1 Pin 2 RIGHT
BR/BEPOWER MIRRORS 8N - 15
SIDEVIEW MIRROR (Continued)

WIRING
TABLE OF CONTENTS
page page
AIRBAG SYSTEM.................... 8W-43-1
AIR CONDITIONING-HEATER........... 8W-42-1
ALL WHEEL ANTILOCK BRAKES........ 8W-35-1
AUDIO SYSTEM..................... 8W-47-1
BUS COMMUNICATIONS.............. 8W-18-1
CENTRAL TIMER MODULE............. 8W-45-1
CHARGING SYSTEM.................. 8W-20-1
COMPONENT INDEX.................. 8W-02-1
CONNECTOR/GROUND/SPLICE
LOCATION........................ 8W-91-1
CONNECTOR PIN-OUTS............... 8W-80-1
FRONT LIGHTING.................... 8W-50-1
FUEL/IGNITION SYSTEM.............. 8W-30-1
GROUND DISTRIBUTION.............. 8W-15-1
HORN/CIGAR LIGHTER/POWER OUTLET . . 8W-41-1
INSTRUMENT CLUSTER............... 8W-40-1
INTERIOR LIGHTING.................. 8W-44-1
JUNCTION BLOCK.................... 8W-12-1OVERHEAD CONSOLE................. 8W-49-1
POWER DISTRIBUTION............... 8W-10-1
POWER DISTRIBUTION............... 8W-97-1
POWER DOOR LOCKS................ 8W-61-1
POWER MIRRORS................... 8W-62-1
POWER SEATS...................... 8W-63-1
POWER WINDOWS................... 8W-60-1
REAR LIGHTING..................... 8W-51-1
REAR WHEEL ANTILOCK BRAKES....... 8W-34-1
SPLICE INFORMATION................ 8W-70-1
STARTING SYSTEM.................. 8W-21-1
TRAILER TOW....................... 8W-54-1
TRANSMISSION CONTROL SYSTEM..... 8W-31-1
TURN SIGNALS...................... 8W-52-1
VEHICLE SPEED CONTROL............ 8W-33-1
VEHICLE THEFT SECURITY SYSTEM..... 8W-39-1
WIPERS............................ 8W-53-1
WIRING DIAGRAM INFORMATION....... 8W-01-1 BR/BEWIRING 8W - 1

8W-02 COMPONENT INDEX
Component Page
4WD Switch.......................... 8W-31
A/C Compressor Clutch Relay............ 8W-42
A/C Compressor Clutch................. 8W-42
A/C- Heater Control.................... 8W-42
A/C Heater Temperature Select........... 8W-42
A/C High Pressure Switch............... 8W-42
A/C Low Pressure Switch................ 8W-42
Accelerator Pedal Position Sensor......... 8W-30
Aftermarket Center High Mounted Stop
Lamp............................. 8W-51
Aftermarket Trailer Tow Connector........ 8W-54
Airbag Control Module.................. 8W-43
Ambient Temperature Sensor............ 8W-49
Ash Receiver Lamp.................... 8W-44
Automatic Day/Night Mirror............. 8W-49
Automatic Shut Down Relay............. 8W-30
Auxiliary Battery...................... 8W-20
Back-Up Lamp Switch.................. 8W-51
Back-Up Lamp........................ 8W-51
Battery Temperature Sensor............. 8W-30
Battery............................. 8W-20
Blend Door Actuator................... 8W-42
Blower Motor Relay.................... 8W-42
Blower Motor Resistor Block............. 8W-42
Blower Motor......................... 8W-42
Brake Lamp Switch.................... 8W-51
Brake Pressure Switch............... 8W-34, 35
Bypass Jumper....................... 8W-21
Camshaft Position Sensor............... 8W-30
Capacitor......................... 8W-10, 30
Cargo Lamps........................ 8W-44
Center High Mounted Stop Lamps........ 8W-51
Center Identification Lamp.............. 8W-50
Central Timer Module.................. 8W-45
Cigar Lighter......................... 8W-41
Circuit Breakers...................... 8W-12
Clockspring.................. 8W-33, 41, 43, 47
Clutch Pedal Position Switch............. 8W-21
Combination Flasher................... 8W-52
Controller Antilock Brake............ 8W-34, 35
Crankshaft Position Sensor.............. 8W-30
Cummins Bus........................ 8W-18
Cup Holder Lamp..................... 8W-44
Data Link Connector................... 8W-18
Daytime Running Lamp Module.......... 8W-50
Dome Lamp.......................... 8W-44
Driver Airbag......................... 8W-43
Driver Cylinder Lock Switch............. 8W-39
Driver Door Ajar Switch................ 8W-45
Driver Door Lock Motor................. 8W-61
Driver Door Window/Lock Switch...... 8W-60, 61
Driver Heated Seat Cushion............. 8W-63Component Page
Driver Heated Seat Switch.............. 8W-63
Driver Lumbar Motor.................. 8W-63
Driver Power Seat Front Vertical Motor.... 8W-63
Driver Power Seat Horizontal Motor....... 8W-63
Driver Power Seat Rear Vertical Motor..... 8W-63
Driver Power Seat Switch............... 8W-63
Driver Power Window Motor............. 8W-60
Electric Brake Provision................ 8W-54
Engine Control Module................. 8W-30
Engine Coolant Temperature Sensor....... 8W-30
Engine Oil Pressure Sensor.............. 8W-30
Engine Starter Motor Relay.............. 8W-21
Engine Starter Motor................... 8W-21
EVAP/Purge Solenoid................... 8W-30
Fender Lamp......................... 8W-51
Fog Lamp Relay....................... 8W-50
Fog Lamp............................ 8W-50
Fuel Heater Relay..................... 8W-30
Fuel Heater........................ 8W-30-36
Fuel Injection Pump................... 8W-30
Fuel Injectors......................... 8W-30
Fuel Pump Module.................... 8W-30
Fuel Pump Relay...................... 8W-30
Fuel Tank Module..................... 8W-30
Fuel Transfer Pump.................... 8W-30
Fuses (JB)........................... 8W-12
Fuses (PDC).......................... 8W-10
Fusible Link....................... 8W-20, 30
Grounds............................. 8W-15
Generator............................ 8W-20
Glove Box Lamp And Switch............. 8W-44
Headlamp Beam Select Switch........... 8W-50
Headlamp Switch...................... 8W-50
Headlamp........................... 8W-50
Heated Mirror Relay................... 8W-62
Heated Mirror Switch.................. 8W-62
Heated Seat Relay..................... 8W-12
High Note Horn....................... 8W-41
Horn Relay.......................... 8W-41
Horn Switch.......................... 8W-41
Idle Air Control Motor.................. 8W-30
Ignition Coils......................... 8W-30
Ignition Switch....................... 8W-10
Instrument Cluster.................... 8W-40
Intake Air Heater Relays................ 8W-30
Intake Air Heater..................... 8W-30
Intake Air Temperature Sensor........... 8W-30
Intermittent Wiper Switch............... 8W-53
Joint Connectors....... 8W-10, 12, 15, 30, 34, 35,
40, 44, 45, 51, 53, 54, 70
Junction Block........................ 8W-12
Leak Detection Pump.................. 8W-30
BR/BE8W-02 COMPONENT INDEX 8W - 02 - 1

Component Page
License Lamp......................... 8W-51
Low Note Horn....................... 8W-41
Manifold Absolute Pressure Sensor........ 8W-30
Outboard Clearance Lamps.............. 8W-50
Outboard Headlamps................... 8W-50
Outboard Identification Lamps........... 8W-50
Output Speed Sensor................... 8W-31
Overdrive Switch...................... 8W-31
Overhead Console..................... 8W-49
Oxygen Sensors....................... 8W-30
Oxygen Sensor Downstream Relay........ 8W-30
Park Brake Switch.................. 8W-40, 50
Park/Neutral Position Switch.......... 8W-30, 51
Park/Turn Signal Lamp................. 8W-52
Passenger Airbag On/Off Switch.......... 8W-43
Passenger Airbag...................... 8W-43
Passenger Cylinder Lock Switch.......... 8W-39
Passenger Door Ajar Switch.............. 8W-45
Passenger Door Lock Motor.............. 8W-61
Passenger Door Window/Lock Switch.... 8W-60, 61
Passenger Heated Seat Cushion.......... 8W-63
Passenger Heated Seat Switch........... 8W-63
Passenger Lumbar Motor................ 8W-63
Passenger Power Seat Front Vertical
Motor............................. 8W-63
Passenger Power Seat Horizontal Motor.... 8W-63
Passenger Power Seat Rear Vertical Motor . . 8W-63
Passenger Power Seat Switch............ 8W-63
Passenger Power Window Motor.......... 8W-60
Power Distribution Center............... 8W-10
Power Mirror Switch................... 8W-62Component Page
Power Mirror......................... 8W-62
Power Outlet......................... 8W-41
Powertrain Control Module.............. 8W-30
PTO Switch.......................... 8W-30
Quad High Beam Relay................. 8W-50
Radio Choke Relay..................... 8W-47
Radio............................... 8W-47
Rear Wheel Speed Sensor............ 8W-34, 35
Remote Radio Switch................... 8W-47
Splices.............................. 8W-70
Seat Belt Switch...................... 8W-40
Seat Heat Interface Module.............. 8W-63
Security Relay........................ 8W-39
Speakers............................ 8W-47
Speed Control Servo................... 8W-33
Speed Control Switches................. 8W-33
Tail/Stop/Turn Signal Lamp.............. 8W-51
Tailgate Lamps....................... 8W-51
Throttle Position Sensor................ 8W-30
Trailer Tow Connector.................. 8W-54
Trailer Tow Relay...................... 8W-54
Transmission Control Relay.............. 8W-31
Transmission Solenoid Assembly.......... 8W-31
Turn Signal/Hazard Switch.............. 8W-52
Underhood Lamp...................... 8W-44
Visor/Vanity Lamps.................... 8W-44
Washer Fluid Level Switch.............. 8W-40
Water In Fuel Sensor................... 8W-30
Wheel Speed Sensor.................... 8W-35
Windshield Washer Pump............... 8W-53
Wiper Motor Relay..................... 8W-53
8W - 02 - 2 8W-02 COMPONENT INDEXBR/BE

8W-12 JUNCTION BLOCK
Component Page
A/C Compressor Clutch Relay.......... 8W-12-13
A/C Heater Temperature Select......... 8W-12-8
A/C-Heater Control................... 8W-12-9
Airbag Control Module............... 8W-12-17
Ambient Temperature Sensor.......... 8W-12-19
Ash Receiver Lamp................... 8W-12-9
Automatic Day/Night Mirror..... 8W-12-13, 15, 21
Back-Up Lamp Switch............. 8W-12-11, 21
Blend Door Actuator.................. 8W-12-8
Blower Motor Relay.................. 8W-12-8
Cargo Lamp No. 1................... 8W-12-14
Cargo Lamp No. 2................... 8W-12-14
Central Timer Module........ 8W-12-8, 10, 13, 15
Cigar Lighter...................... 8W-12-16
Circuit Breaker 1.................. 8W-12-6, 7
Circuit Breaker 2.................... 8W-12-7
Combination Flasher......... 8W-12-6, 12, 15, 20
Controller Antilock Brake.............. 8W-12-8
Cup Holder Lamp.................... 8W-12-9
Data Link Connector................. 8W-12-14
Daytime Running Lamp Module........ 8W-12-11
Dome Lamp....................... 8W-12-14
Driver Door Window/Lock Switch..... 8W-12-7, 15
Driver Heated Seat Switch........... 8W-12-8, 9
Driver Power Seat Switch.............. 8W-12-7
Engine Control Module............... 8W-12-12
EVAP/Purge Solenoid................ 8W-12-13
Fuel Heater Relay................... 8W-12-13
Fuel Pump Relay................... 8W-12-12
Fuse 1 (JB)......................... 8W-12-8
Fuse 1 (PDC)...................... 8W-12-16
Fuse 2 (JB)....................... 8W-12-6, 8
Fuse 3 (JB)....................... 8W-12-6, 8
Fuse 4 (JB)........................ 8W-12-10
Fuse 4 (PDC)...................... 8W-12-20
Fuse 5 (JB)......................... 8W-12-9
Fuse 6 (JB)...................... 8W-12-6, 10
Fuse 7 (JB)...................... 8W-12-6, 11
Fuse 8 (JB)...................... 8W-12-6, 11
Fuse 9 (JB)...................... 8W-12-6, 11
Fuse 10 (JB).................. 8W-12-6, 12, 20
Fuse 11 (JB)..................... 8W-12-6, 13
Fuse 12 (JB)....................... 8W-12-14
Fuse 13 (JB)....................... 8W-12-15Component Page
Fuse 14 (JB)....................... 8W-12-16
Fuse 15 (JB)..................... 8W-12-6, 16
Fuse 16 (JB)..................... 8W-12-6, 16
Fuse 17 (JB)..................... 8W-12-6, 17
Fuse 18 (JB)..................... 8W-12-6, 17
Fuse 19 (JB)..................... 8W-12-6, 17
G100............................. 8W-12-18
G200.......................... 8W-12-15, 19
G201....................... 8W-12-15, 18, 20
Glove Box Lamp And Switch........... 8W-12-14
Headlamp Switch.................... 8W-12-9
Heated Mirror Switch................. 8W-12-8
Heated Seat Relay................... 8W-12-8
Ignition Switch................... 8W-12-6, 20
Instrument Cluster.......... 8W-12-9, 16, 17, 18
Intermittent Wiper Switch............ 8W-12-10
Joint Connector No. 1............. 8W-12-11, 21
Joint Connector No. 5.............. 8W-12-9, 14
Joint Connector No. 6................ 8W-12-10
Joint Connector No. 8............ 8W-12-8, 9, 17
Junction Block...... 8W-12-2, 3, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19, 20, 21
Left Park/Turn Signal Lamp........... 8W-12-18
Left Visor/Vanity Lamp............ 8W-12-14, 15
Overhead Console.......... 8W-12-13, 14, 19, 21
Park/Neutral Position Switch....... 8W-12-11, 21
Passenger Airbag On/Off Switch........ 8W-12-17
Passenger Door Window/Lock Switch . . 8W-12-7, 15
Passenger Heated Seat Switch........ 8W-12-8, 9
Passenger Power Seat Switch........... 8W-12-7
Power Distribution Center......... 8W-12-16, 20
Power Mirror Switch.............. 8W-12-14, 21
Powertrain Control Module............ 8W-12-12
Radio........................ 8W-12-9, 11, 14
Radio Choke Relay.................. 8W-12-10
Right Park/Turn Signal Lamp.......... 8W-12-18
Right Visor/Vanity Lamp........... 8W-12-14, 15
Seat Heat Interface Module............ 8W-12-8
Turn Signal/Hazard Switch......... 8W-12-18, 20
Underhood Lamp................... 8W-12-14
Windshield Washer Pump............. 8W-12-10
Wiper Motor....................... 8W-12-10
Wiper Motor Relay.................. 8W-12-10
BR/BE8W-12 JUNCTION BLOCK 8W - 12 - 1

8W-15 GROUND DISTRIBUTION
Component Page
A/C Compressor Clutch.................8W-15-8, 10
A/C Heater Temperature Select.............8W-15-12
A/C-Heater Control.....................8W-15-14
Aftermarket Trailer Tow Connector............8W-15-6
Airbag Control Module....................8W-15-5
Ash Receiver Lamp.....................8W-15-14
Automatic Day/Night Mirror...............8W-15-13
Auxiliary Battery.......................8W-15-11
Battery.............................8W-15-11
Blend Door Actuator.....................8W-15-12
Blower Motor Relay......................8W-15-2
Brake Lamp Switch.....................8W-15-12
Brake Pressure Switch....................8W-15-3
Center High Mounted Stop Lamp No. 1........8W-15-17
Center High Mounted Stop Lamp No. 2........8W-15-17
Center Identification Lamp................8W-15-18
Central Timer Module.................8W-15-12, 13
Cigar Lighter.........................8W-15-14
Clockspring...........................8W-15-4
Combination Flasher....................8W-15-13
Controller Antilock Brake..................8W-15-5
Cummins Bus.........................8W-15-10
Cup Holder Lamp......................8W-15-14
Data Link Connector................8W-15-8, 10, 12
Daytime Running Lamp Module............8W-15-2, 3
Driver Cylinder Lock Switch...............8W-15-16
Driver Door Ajar Switch..................8W-15-16
Driver Door Window/Lock Switch..........8W-15-16, 17
Driver Heated Seat Cushion...............8W-15-15
Driver Heated Seat Switch................8W-15-13
Driver Power Seat Switch..............8W-15-15, 17
Electric Brake Provision..................8W-15-14
Engine Control Module....................8W-15-9
Engine Starter Motor Relay...............8W-15-8, 9
Fuel Heater..........................8W-15-10
Fuel Heater Relay.......................8W-15-2
Fuel Injection Pump.....................8W-15-9
Fuel Pump Module......................8W-15-7
Fuel Pump Relay.......................8W-15-2
Fuel Transfer Pump.....................8W-15-10
G100......................8W-15-2, 3, 4, 5, 7, 12
G101...............................8W-15-5
G102...............................8W-15-2
G105...............................8W-15-8
G107...............................8W-15-10
G113...............................8W-15-11
G114...............................8W-15-11
G115...............................8W-15-11
G116...............................8W-15-11
G117...............................8W-15-11
G118...............................8W-15-11
G120...............................8W-15-11
G200...........................8W-15-7, 12, 14
G201..........................8W-15-12, 13, 14
G300..........................8W-15-15, 16, 17
G301...............................8W-15-17
G302...............................8W-15-18
Glove Box Lamp And Switch...............8W-15-14
Headlamp Beam Select Switch..............8W-15-14
Headlamp Switch....................8W-15-13, 14
Heated Mirror Switch....................8W-15-13
High Note Horn........................8W-15-7
Ignition Switch........................8W-15-13
Instrument Cluster...................8W-15-12, 14
Component Page
Intake Air Heater Relay No. 1...............8W-15-9
Intake Air Heater Relay No. 2...............8W-15-9
Joint Connector No. 1...................8W-15-2, 5
Joint Connector No. 2....................8W-15-9
Joint Connector No. 5.................8W-15-13, 14
Joint Connector No. 6...................8W-15-4, 5
Joint Connector No. 8..................8W-15-5, 13
Junction Block...................8W-15-12, 13, 14
Left Back-Up Lamp......................8W-15-6
Left Front Door Speaker...................8W-15-4
Left Front Fender Lamp...................8W-15-6
Left License Lamp.......................8W-15-6
Left Outboard Clearance Lamp.............8W-15-18
Left Outboard Identification Lamp...........8W-15-18
Left Park/Turn Signal Lamp................8W-15-3
Left Power Mirror......................8W-15-16
Left Rear Fender Lamp...................8W-15-6
Left Remote Radio Switch..................8W-15-4
Left Tail/Stop/Turn Signal Lamp.............8W-15-6
Left Visor/Vanity Lamp...................8W-15-13
Low Note Horn.........................8W-15-7
Overdrive Switch.......................8W-15-12
Overhead Console......................8W-15-12
Oxygen Sensor 1/2 Left Bank Down...........8W-15-8
Oxygen Sensor 1/2 Pre-Catalyst..............8W-15-8
Oxygen Sensor 1/3 Post-Catalyst.............8W-15-8
Oxygen Sensor 2/2 Right Bank Down..........8W-15-8
Passenger Airbag On/Off Switch..............8W-15-5
Passenger Cylinder Lock Switch.............8W-15-16
Passenger Door Ajar Switch................8W-15-16
Passenger Door Window/Lock Switch..........8W-15-16
Passenger Heated Seat Cushion.............8W-15-15
Passenger Heated Seat Switch..............8W-15-13
Passenger Power Seat Switch..............8W-15-15
Power Distribution Center.................8W-15-2
Power Mirror Switch....................8W-15-16
Power Outlet.........................8W-15-14
Powertrain Control Module..............8W-15-8, 10
Quad High Beam Relay...................8W-15-2
Radio...............................8W-15-5
Radio Choke Relay......................8W-15-4
Right Back-Up Lamp.....................8W-15-6
Right Front Door Speaker..................8W-15-4
Right Front Fender Lamp..................8W-15-6
Right License Lamp......................8W-15-6
Right Outboard Clearance Lamp............8W-15-18
Right Outboard Identification Lamp..........8W-15-18
Right Park/Turn Signal Lamp...............8W-15-7
Right Power Mirror.....................8W-15-16
Right Rear Fender Lamp..................8W-15-6
Right Remote Radio Switch.................8W-15-4
Right Tail/Stop/Turn Signal Lamp............8W-15-6
Right Visor/Vanity Lamp..................8W-15-13
Seat Belt Switch.....................8W-15-15, 17
Seat Heat Interface Module................8W-15-15
Security Relay.........................8W-15-2
Speed Control Servo.....................8W-15-3
Tailgate Lamp.........................8W-15-6
Trailer Tow Connector....................8W-15-6
Trailer Tow Relay.......................8W-15-2
Underhood Lamp.......................8W-15-3
Washer Fluid Level Switch.................8W-15-3
Windshield Washer Pump..................8W-15-7
Wiper Motor...........................8W-15-7
BR/BE8W-15 GROUND DISTRIBUTION 8W - 15 - 1

8W-44 INTERIOR LIGHTING
Component Page
Ash Receiver Lamp................... 8W-44-6
Cargo Lamp No. 1.................... 8W-44-4
Cargo Lamp No. 2.................... 8W-44-4
Central Timer Module................. 8W-44-5
Cup Holder Lamp.................... 8W-44-6
Data Link Connector................. 8W-44-2
Dome Lamp........................ 8W-44-4
Fuse 5 (JB)......................... 8W-44-6
Fuse 11 (JB)........................ 8W-44-5
Fuse 12 (JB)...................... 8W-44-2, 3
G100.............................. 8W-44-2
G200.............................. 8W-44-3
G201.......................... 8W-44-2, 4, 6Component Page
Glove Box Lamp And Switch............ 8W-44-2
Headlamp Switch................ 8W-44-4, 5, 6
Ignition Switch...................... 8W-44-5
Joint Connector No. 5............... 8W-44-2, 6
Joint Connector No. 6................. 8W-44-5
Joint Connector No. 8........... 8W-44-3, 4, 5, 6
Junction Block............... 8W-44-2, 3, 4, 5, 6
Left Visor/Vanity Lamp................ 8W-44-2
Overhead Console.................... 8W-44-3
Power Mirror Switch.................. 8W-44-4
Radio............................ 8W-44-2, 6
Right Visor/Vanity Lamp............... 8W-44-2
Underhood Lamp.................... 8W-44-2
BR/BE8W-44 INTERIOR LIGHTING 8W - 44 - 1