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Installing a 7-Way Trailer Connector on a 2000 Chevy Suburban

Question:

The trailer light wires were cut on my 2000 Cevy Suburban. I need a color code,,,need to know which colors go to what. Please help!.

Expert Reply:

If your Suburban has a round connector to plug in a 7-Way, you could just use # 30955, which is a replacement 7 and 4-Way connector. On some models of the 2000 Chevy trucks and SUVs, there may not have been a tow package wiring plug located above the spare tire. Instead, there could be a bundle of wires. In the bundle of wires, look for the following colors:

Yellow = left turn and brake light
Dark Green = right turn and brake light
Brown = tail lights
White = ground
Light Blue = not used (camper shell light)
Light Green = reverse lights

The definitive way to determine the wire functions is to use a circuit tester, # ALL640595, and test each wire while someone sits in the Suburban and runs through each function. The brake output wire and 12 volt power wire will not be present and will need to be run manually. The 12 volt wire will attach to the positive battery terminal via a 40 amp circuit breaker, # PK54540. The brake wire will attach to the blue wire of a brake controller. You can use wire # 10-2-1 and you will need about 25 feet worth.

The functions for a vehicle side 7-Way, if looking at the back of the plug where the wires connect, is:

1 oclock position = tail lights
3 oclock position = left turn and brake
5 oclock position = ground
7 oclock position = brake output
9 oclock position = right turn and brake
11 oclock position = 12 volt power
center = reverse lights

There may also be some connections that need to be made under the hood with you have a functioning 12 volt wire at the back and/or brake output wire. I have attached an FAQ article for you to view.

expert reply by:
Michael H

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