2002 DODGE RAM headlamp

RIGHT OUTBOARD IDENTIFICATION LAMP-2WAY
CAV CIRCUIT FUNCTION
1 L7 18BK/YL HEADLAMP SWITCH OUTPUT
2 Z4 18BK GROUND
RIGHT PARK/TURN SIGNAL LAMP - BLACK 3 WAY
CAV CIRCUIT FUNCTION
1 Z1 18BK GROUND
2 L7 18BK/YL PARK LAMP RELAY OUTPUT
3 L60 18LG/TN RIGHT TURN SIGNAL
RIGHT POWER MIRROR-6WAY
CAV CIRCUIT FUNCTION
1 P72 20YL/BK RIGHT MIRROR UP DRIVER
2 P74 20DB RIGHT MIRROR LEFT DRIVER
3 P70 20WT RIGHT MIRROR COMMON DRIVER (RIGHT/DOWN)
4 C16 20LB/YL HEATED MIRROR
5 Z2 20BK/LG GROUND
6- -
RIGHT REAR FENDER LAMP (DUAL REAR WHEELS) - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 L7 18BK/YL HEADLAMP SWITCH OUTPUT
2 Z13 18BK GROUND
RIGHT REAR SPEAKER (2 DOOR PREMIUM) - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 X94 18TN/VT AMPLIFIED LOW RIGHT REAR SPEAKER (+)
2 X92 18TN/BK AMPLIFIED LOW RIGHT REAR SPEAKER (-)
BR/BE8W-80 CONNECTOR PIN-OUTS 8W - 80 - 77

SPEED CONTROL SERVO - BLACK 4 WAY
CAV CIRCUIT FUNCTION
1 V36 20TN/RD SPEED CONTROL VACUUM SOLENOID CONTROL
2 V35 20LG/RD SPEED CONTROL VENT SOLENOID CONTROL
3 V30 20DB/RD SPEED CONTROL BRAKE SWITCH OUTPUT
4 Z1 20BK GROUND
TAILGATE LAMP (DUAL REAR WHEELS) - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 Z13 18BK GROUND
2 L7 18BK/YL HEADLAMP SWITCH OUTPUT
THROTTLE POSITION SENSOR (GAS)-3WAY
CAV CIRCUIT FUNCTION
1 K6 20VT/WT 5V OUTPUT
2 K22 18OR/DB THROTTLE POSITION SENSOR SIGNAL
3 K4 20BK/LB SENSOR GROUND
TRAILER TOW CONNECTOR - 10 WAY
CAV CIRCUIT FUNCTION
1- -
2 L62 16BR/RD RIGHT TURN SIGNAL
3 L1 18VT/BK BACK-UP LAMP FEED
4 A6 14RD/OR FUSED B(+)
5 L76 14BK/OR TRAILER TOW RELAY OUTPUT
6- -
7 B40 14LB TRAILER TOW BRAKE B(+)
8 Z13 14BK GROUND
9 Z13 14BK GROUND
10 L63 16DG/RD LEFT TURN SIGNAL
TRANSMISSION SOLENOID ASSEMBLY-8WAY
CAV CIRCUIT FUNCTION
1 T16 18RD TRANSMISSION CONTROL RELAY OUTPUT
2 K7 18OR 5V SUPPLY
3 K4 18BK/LB SENSOR GROUND
4 T25 18LG/WT GOVERNOR PRESSURE SENSOR SIGNAL
5 K88 18VT/WT GOVERNOR PRESSURE SOLENOID CONTROL
6 T60 18BR 3-4 SHIFT SOLENOID CONTROL
7 K54 18OR/BK TORQUE CONVERTER CLUTCH SOLENOID CONTROL
8 T54 18VT TRANSMISSION TEMPERATURE SENSOR SIGNAL
8W - 80 - 80 8W-80 CONNECTOR PIN-OUTSBR/BE

CONNECTOR NAME/
NUMBERCOLOR LOCATION FIG.
Engine Oil Pressure Sensor
(V8)BK Near Distributor 5
Engine Oil Pressure Sensor
(V10)Near Oil Filter 8
Engine Oil Pressure Sensor
(Diesel)Left Side of Engine 15
Fuel Heater (Diesel) Left Side of Engine 13
Fuel Injection Pump (Diesel) Left Side of Engine, Below ECM 13
Fuel Injector No.1 BK At Fuel Injector 7
Fuel Injector No. 2 BK At Fuel Injector 7, 8
Fuel Injector No. 3 BK At Fuel Injector 7, 8
Fuel Injector No. 4 BK At Fuel Injector 7, 8
Fuel Injector No. 5 BK At Fuel Injector 7, 8
Fuel Injector No. 6 BK At Fuel Injector 7, 8
Fuel Injector No. 7 BK At Fuel Injector 7, 8
Fuel Injector No. 8 BK At Fuel Injector 7, 8
Fuel Injector No. 9 BK At Fuel Injector 8
Fuel Injector No. 10 BK At Fuel Injector 8
Fuel Pump Module (Gas) LTGY At Frame Rail 29
Fuel Tank Module (Diesel) LTGY At Frame Rail N/S
Fuel Transfer Pump (Diesel) Left Rear of Engine Bottom of Pump 13
Generator BK Front of Engine 10, 11
Glove Box Lamp At Glove Box 30
Headlamp Switch C1 BK Left Side of Instrument Panel 30, 34
Headlamp Switch C2 Left Side of Instrument Panel 30, 34
Heated Mirror Switch Center of Instrument Panel 33
High Note Horn BK Front Bumper Right Support 22
Idle Air Control Motor BK On Throttle Body 12
Ignition Coil (5.9L) GY Right Front of Engine 7, 12
Ignition Coil 4 Pack (8.0L) BK Right Side of Engine 12
Ignition Coil 6 Pack (8.0L) BK Right Side of Engine 12
Ignition Switch C1 BK Steering Column 32
Ignition Switch C2 GY Steering Column 32
Instrument Cluster C1 Rear of Instrument Cluster 30
Instrument Cluster C2 Rear of Instrument Cluster 30
Intake Air Heater Relay
(Diesel)Left Fender Side Shield 21
Intake Air Temperature
Sensor (Diesel)Left Rear of Engine 13
Intake Air Temperature
Sensor (Gas)BK On Intake Manifold 7, 8
Joint Connector No. 1 In Power Distribution Center N/S
Joint Connector No. 2 In Power Distribution Center N/S
8W - 91 - 4 8W-91 CONNECTOR/GROUND/SPLICE LOCATIONBR/BE
CONNECTOR/GROUND/SPLICE LOCATION (Continued)

CONNECTOR NAME/
NUMBERCOLOR LOCATION FIG.
Joint Connector No. 5 NAT Left Side of Instrument Panel 32
Joint Connector No. 6 NAT Left Side of Instrument Pane 32
Joint Connector No. 7 NAT Left Side of Instrument Pane 32
Joint Connector No. 8 NAT Center of Instrument Panel 30
Junction Block C1 BL Left Cowl 35
Junction Block C2 NAT Left Cowl 35
Junction Block C3 Left Cowl 25
Junction Block C4 BR Left Cowl 33
Junction Block C5 GN Left Cowl 33
Junction Block C6 BK Left Cowl 33
Junction Block C7 LTGY Left Cowl 33
Junction Block C8 OR Left Cowl 33
Junction Block C9 NAT Left Cowl N/S
Leak Detection Pump (Gas) BK Right Fender Side Shield 22
Left Back-Up Lamp GY Rear of Lamp N/S
Left Fog Lamp WT Rear of Fog Lamp N/S
Left Front Door Speaker
(Premium)BK In Door 24
Left Front Door Speaker
(Standard)BK In Door 24
Left Front Fender Lamp BK On Fender N/S
Left Front Wheel Speed
Sensor (ABS)BK Left Fender Side Shield 18
Left Headlamp BL At Headlamp N/S
Left License Lamp BK At Rear Bumper N/S
Left Outboard Clearance
LampBK Behind Front of Headliner 25
Left Outboard Headlamp BL At Headlamp N/S
Left Outboard Identification
LampBK Behind Front of Headliner 25
Left Park/Turn Signal Lamp BK At Lamp N/S
Left Power Mirror BK In Door 24
Left Rear Fender Lamp BK On Fender N/S
Left Rear Speaker (Premium) BK At B Pillar 23
Left Rear Speaker (Standard) At B Pillar 23
Left Rear Door Speaker In Door 23
Left Remote Radio Switch Steering Wheel N/S
Left Speed Control Switch Steering Wheel N/S
Left Tail/Stop Turn Signal
LampBK At Rear Bumper 27
Left Tweeter (Premium) Left A Pillar N/S
Left Visor/Vanity Lamp BK Left A-Pillar 25, 26
License Lamps BK Rear Bumper 27
BR/BE8W-91 CONNECTOR/GROUND/SPLICE LOCATION 8W - 91 - 5
CONNECTOR/GROUND/SPLICE LOCATION (Continued)

CONNECTOR NAME/
NUMBERCOLOR LOCATION FIG.
Passenger Heated Seat
SwitchBL Center of Instrument Panel N/S
Passenger Heated Seat
CushionUnder Seat N/S
Passenger Lumbar Motor Under Seat N/S
Passenger Power Seat Front
Vertical MotorUnder Seat N/S
Passenger Power Seat
Horizontal MotorUnder Seat N/S
Passenger Power Seat Rear
Vertical MotorUnder Seat N/S
Passenger Power Seat
SwitchAt Seat N/S
Passenger Power Window
MotorIn Door N/S
Power Mirror Switch Driver Door 24
Power Outlet BK Center of I.P. 33
Powertrain Control Module
C1BK Right Rear Engine Compartment 1, 3
Powertrain Control Module
C2WT Right Rear Engine Compartment 1, 3
Powertrain Control Module
C3GY Right Rear Engine Compartment 1, 3
Radio Choke Relay BK Instrument Panel Center support 30, 33
Radio C1 GY Rear of Radio 33
Radio C2 BK Rear of Radio 33
Radio C3 BK Instrument Panel Center Support 33
Rear Wheel Speed Sensor
(ABS)BK Left Frame Rail, Near Fuel Tank 27, 29
Right Back-Up Lamp GY Rear of Lamp N/S
Right Fog Lamp WT Rear of Fog Lamp N/S
Right Front Door
Speaker(PremiumBK In Door N/S
Right Front Door
Speaker(StandardBK In Door N/SN/S
Right Front Fender Lamp BK On Fender 27
Right Front Wheel Speed
Sensor (ABS)BK Right Fender Side Shield 22
Right Headlamp BK At Headlamp N/S
Right License Lamp BK At Rear Bumper N/S
Right Outboard Clearance
LampBK Behind Front of Headliner 25
Right Outboard Headlamp At Headlamp N/S
Right Outboard Identification
LampBK Behind Front of Headliner 25
BR/BE8W-91 CONNECTOR/GROUND/SPLICE LOCATION 8W - 91 - 7
CONNECTOR/GROUND/SPLICE LOCATION (Continued)

GROUND
NUMBERLOCATION FIG.
G200 Left Cowl 32
G201 Instrument Panel Right Center Support 30, 33
G300 Left Lower Cowl 25
G301 Below Left Rear Speaker 23
G302 At Overhead Console 25
SPLICES
SPLICE
NUMBERLOCATION FIG.
S100 Engine Harness Near T/O to Oil Pressure Sensor 7
S102 Headlamp and Dash Harness, Near T/O to Right Park/Turn Lamp 22
S103 Headlamp and Dash Harness, Near T/O to Left Park/Turn Lamp N/S
S104 Headlamp and Dash Harness, Near T/O to Left Front Headlamp N/S
S105 Headlamp and Dash Harness, In Power Distribution Center 19
S106 Headlamp and Dash Harness, In Power Distribution Center 19
S107 Headlamp and Dash Harness, Near Left Wheel Speed Sensor 19
S108 Headlamp and Dash Harness, Near Daytime Running Lamp Module 19
S109 Battery Harness, In T/O for Engine and Transmission Ground N/S
S110 Headlamp and Dash Harness, Near Left Wheel Speed Sensor 19
S111 Transmission Harness Near T/O to A/C Low Pressure Switch 4
S112 Headlamp and Dash Harness, Near Antilock Brake Controller 19
S113 Headlamp and Dash Harness, Near Antilock Brake Controller 19
S114 Headlamp and Dash Harness, In T/O to Chassis Harness 19
S116(V8) Engine Harness, Near T/O to Fuel Injectors 2
S116 (V10) Engine Harness Rear of Engine 2, 9
S116 (Diesel) Transmission Harness, In T/O to Power Distribution Center 4
S117 (V8) Engine Harness, Near T/O to Fuel Injectors 2
S117 (V10) Engine Harness, Near T/O to fuel Injector No. 8 2, 9
S118 (V8) Engine Harness, Near T/O to Fuel Injectors 2
S118 (V10) Engine Harness, Rear of Engine 2, 9
S119 (V8) Engine Harness, Near T/O to Fuel Injectors 2
S119 (V10) Engine Harness, Rear of Engine 2, 9
S120 (V8) Engine Harness, Near T/O to Fuel Injectors 2
S120 (V10) Engine Harness, Rear of Engine 2, 9, 17
S120 (Diesel) Transmission Harness, Near T/O to A/C Low Pressure Switch 4
S121 (V8) Engine Harness, Near T/O to Fuel Injector No. 5 7
S121 (V10) Engine Harness, Near T/O to Fuel Injector No. 7 9
S122 (V8) Engine Harness, Top of Transmission 6
S122 (V10) Engine Harness, In T/O to Transmission N/S
S123 (V8) Engine Harness, Near T/O to Fuel Injector No. 3 7
S123 (V10) Engine Harness, Near T/O to Fuel Injector No. 3 9
BR/BE8W-91 CONNECTOR/GROUND/SPLICE LOCATION 8W - 91 - 9
CONNECTOR/GROUND/SPLICE LOCATION (Continued)

SPLICE
NUMBERLOCATION FIG.
S124 (V8) Engine Harness, Top of Transmission 6
S124 (V10) Engine Harness, In T/O to Transmission N/S
S126 (V8) Engine Harness, Near T/O to Fuel Injector No. 1 7
S126 (V10) Engine Harness, Near T/O to Engine Ground 9, 17
S126 (Diesel) Transmission Harness, Near T/O to Powertrain Control Module 4
S127 (V8) Engine Harness, on Top of Transmission 6
S127 (V10) Engine Harness, Near T/O to Transmission 17
S127 (Diesel) Transmission Harness, Near T/O to A/C Low Pressure Switch 4
S128 (Diesel) Transmission Harness, Near T/O to Power Distribution Center 4
S130 (V8) Engine Harness, Near T/O to Oil Pressure Sensor 7
S131 (V10) Engine Harness, Rear of Engine 9
S134 Fog Lamp Harness, In T/O to Right Fog Lamp N/S
S136 Fog Lamp Harness, In T/O to Right Fog Lamp N/S
S141 Headlamp and Dash Harness, Near T/O to Joint Connector No. 3 22
S143 Headlamp and Dash Harness, Near T/O to Power Distribution
Center19
S144 Headlamp and Dash Harness, Near T/O to Joint Connector No. 3 22
S150 Front Bumper Right Support 22
S151 Left Front Engine Compartment 21
S152 Near Left Front Wheel Speed Sensor
S160 (Diesel) Engine Harness, Near Fuel Transfer Pump N/S
S161 (Diesel) Transmission Harness, In T/O to Power Distribution Center 4
S164 (Diesel) Engine Harness, Near Fuel Transfer Pump N/S
S165 (Diesel) Engine Harness, Near Engine Control Module N/S
S166 (Diesel) Engine Harness, Near Engine Control Module N/S
S167 (Diesel) Engine Harness, Near Fuel Transfer Pump N/S
S168 (Diesel) Engine Harness, Near T/O to Engine Coolant Temoerature Sensor N/S
S170 (Diesel) Engine Harness, In T/O to Engine Control Module N/S
S171 Transmission Harness, In T/O to Power Distribution Cente 4
S172 (Diesel) Transmission Harness, Near T/O to A/C Low Pressure Switch 4
S173 (Diesel) Transmission Harness, Near T/O to A/C Low Pressure Switch 4
S174 (Diesel) Transmission Harness, In T/O to Power Distribution Center 4
S175 Transmission Harness, In T/O to Power Distribution Center 4
S176 Headlamp and Dash Harness, In Power Distribution Center 19
S177 Headlamp and Dash Harness, In T/O to Daytime Running Lamps
Module19
S179 Transmission Harness, In T/O to Power Distribution Center 4
S180 Headlamp and Dash Harness, Near Intake Air Heater Relay 22
S181 Headlamp and Dash Harness, Near Intake Air Heater Relay 22
S182 Headlamp and Dash Harness, In T/O to Daytime Running Lamps
Module19
S183 Headlamp and Dash Harness, In Power Distribution Center 19
8W - 91 - 10 8W-91 CONNECTOR/GROUND/SPLICE LOCATIONBR/BE
CONNECTOR/GROUND/SPLICE LOCATION (Continued)

8W-97 POWER DISTRIBUTION
TABLE OF CONTENTS
page page
POWER DISTRIBUTION
DESCRIPTION..........................1
OPERATION............................1
SPECIAL TOOLS
POWER DISTRIBUTION SYSTEMS.........2
CIGAR LIGHTER OUTLET
DESCRIPTION..........................2
OPERATION............................2
DIAGNOSIS AND TESTING - CIGAR LIGHTER
OUTLET.............................2
REMOVAL.............................3
INSTALLATION..........................4
CIRCUIT BREAKER
DESCRIPTION..........................4
DIAGNOSIS AND TESTING - CIRCUIT
BREAKER............................4
GENERATOR CARTRIDGE FUSE
DESCRIPTION..........................4
OPERATION............................4
REMOVAL.............................4
INSTALLATION..........................4
IOD FUSE
DESCRIPTION..........................5
OPERATION............................5
REMOVAL.............................6
INSTALLATION..........................6
JUNCTION BLOCK
DESCRIPTION..........................6
OPERATION............................7
DIAGNOSIS AND TESTING - JUNCTION
BLOCK..............................7
REMOVAL.............................7
INSTALLATION..........................8POWER DISTRIBUTION CENTER
DESCRIPTION..........................8
OPERATION............................8
REMOVAL.............................8
INSTALLATION.........................10
POWER OUTLET
DESCRIPTION.........................10
OPERATION...........................10
DIAGNOSIS AND TESTING - POWER OUTLET . 10
REMOVAL.............................11
INSTALLATION.........................11
HORN RELAY
DESCRIPTION.........................12
DIAGNOSIS AND TESTING - HORN RELAY . . . 12
REMOVAL.............................12
INSTALLATION.........................12
HEADLAMP RELAY
DESCRIPTION.........................13
REMOVAL.............................13
INSTALLATION.........................13
MICRO-RELAY
DESCRIPTION.........................13
OPERATION...........................14
DIAGNOSIS AND TESTING - MICRO-RELAY . . 14
REMOVAL.............................14
INSTALLATION.........................14
RELAY
DESCRIPTION.........................14
OPERATION...........................14
DIAGNOSIS AND TESTING - RELAY.........15
REMOVAL.............................15
INSTALLATION.........................15
POWER DISTRIBUTION
DESCRIPTION
This group covers the various standard and
optional power distribution components used on this
model. The power distribution system for this vehicle
consists of the following components:
²Power Distribution Center (PDC)
²Junction Block (JB).
The power distribution system also incorporates
various types of circuit control and protection fea-
tures, including:
²Automatic resetting circuit breakers
²Blade-type fuses²Cartridge fuses
²Circuit splice blocks
²Flashers
²Relays.
Following are general descriptions of the major
components in the power distribution system. See the
owner's manual in the vehicle glove box for more
information on the features and use of all of the
power distribution system components. Refer toWir-
ing Diagramsfor complete circuit diagrams for the
various power distribution system components.
OPERATION
The power distribution system for this vehicle is
designed to provide safe, reliable, and centralized dis-
BR/BE8W-97 POWER DISTRIBUTION 8W - 97 - 1