2006 Chevrolet Express Van Owner's Manual - Page 254
2006 Chevrolet Express Van Manual
Page 254 highlights
Trailer Wiring Harness The optional heavy-duty trailer wiring package includes a seven-wire harness assembly at the rear of the vehicle and a four-wire harness assembly under the left hand side of the instrument panel. The seven-wire harness assembly is taped together and located in a frame pocket at the driver side rear left corner of the frame. The seven-wire harness includes a 30-amp feed wire. Both harnesses come without connectors 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 and trailer brake controller. Seven-Wire Harness Light Green: Back-up lamps Brown: Parking lamps Yellow: Left stoplamp and turn signal Dark Green: Right stoplamp and turn signal Dark Blue: Use for electric trailer brakes Orange: Trailer accessory White (heavy gage): Ground wire Black: Ground Red/White Stripe: Fused Battery Dark Blue: Trailer Brake Feed Light Blue: Fused Stoplamp/CHMSL Four-Wire Harness (Trailer Brake Controller) 4-52