Trailer Wiring Harness
The light duty trailer wiring is a six-wire harness
assembly. The optional heavy duty trailer wiring is an
eight-wire harness assembly. The harnesses are stored
under the vehicle, on the driver’s side corner frame
crossmember. The heavy duty trailer wiring
has a
30-amp feed wire with an inline fuse located by the
junction block. See “Fuses and Circuit Breakers”
in the
Index. Both harnesses have no connector and should be
wired by a qualified electrical technician. The technician
can use the following color code chart when connecting
the wiring harness to your trailer.
0 DARK BLUE: Use for electric trailer brakes or
auxiliary wiring.
0 RED: Use for battery charging; it connects to the
starter solenoid (eight-wire harness only).
0 LIGHT GREEN: Back-up lamps (eight-wire
harness only).
BROWN: Taillamps and parking lamps.
YELLOW: Left stoplamp and turn signal.
DARK GREEN: Right stoplamp and turn signal.
WHITE (Heavy Gage): Ground wire.
WHITE (Light Gage): Auxiliary stoplamp.
Securely attach the harness to the trailer, then tape or
strap
it to your vehicle’s frame rail. Be sure you leave it
loose enough
so the wiring doesn’t bend or break, but
not
so loose that it drags on the ground. Store the
harness
in its original place. Wrap the harness together
and tie
it neatly so it won’t be damaged.
ProCarManuals.com
Fuse/Circuit Usage Breaker
6 Blower Motor, Temperature Door
Motor, HI Blower Relay Coil
7
8
9
10
11
12
13
14
15
Power Auxiliary Outlets, Assembly
Line Diagnostic Link
Rear Window Defogger
PCM/VCM Battery, ABS Battery
PCM/VCM Ignition, Injectors, Crank
Sensor, Coil Driver Module
Radio, Inside Rearview Mirror Map
Lamp, Overhead Console Reading
Lamps, Rear Wiper, Rear Washer,
Overhead Console Display
DRAC, Anti-Lock Braking System,
Clock, Radio, Battery,
CD Player
A/C Compressor Battery Feed
Daytime Running Lamps,
Fog Lamps,
Fog Lamp Relay
VCM
IGN-3
FuseKircuit Usage
Breaker
16
17
19
20
21
22
24
Turn Signals and Back-up Lamps,
Brake-Transmission Shift
Interlock Solenoid
Windshield Washer, Windshield
Wiper Motor
Not Used
Crank Signal, Air Bag System
Cluster Illumination, Radio
Illumination, Heater Lamp, Chime
Module,
Fog Lamp Illumination,
Rear Wiper Switch, Rear Defog
Switch Illumination, Liftglass Release
Switch Illumination, Overhead
Console Illumination
Air Bag System
PRNDL Power, 4L60E Automatic
Transmission
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