GMC 2004 Sierra User Manual

Page 393

The eight-wire harness contains the following trailer
circuits:

•

Yellow: Left Stop/Turn Signal

•

Dark Green: Right Stop/Turn Signal

•

Brown: Taillamps

•

White: Ground

•

Light Green: Back-up Lamps

•

Light Blue: CHMSL

•

Red: Battery Feed

•

Dark Blue: Trailer Brake

If your trailer is equipped with electric brakes, you can
get a jumper harness (electric trailer brake control)
with a trailer battery feed fuse from your dealer.

If you need to tow a light-duty trailer with a standard
four-way round pin connector you can also get an
adapter from your dealer.

Camper/Fifth-Wheel Trailer Wiring Package

The eight-wire camper harness is located under the
front edge of the pickup box on the driver’s side of the
vehicle, attached to the frame bracket. A connector
will have to be added to the wiring harness which
connects to the camper.

The eight-wire harness contains the following
camper/trailer circuits:

•