Color Code for Tow Package Wires on 2002 Chevy Silverado 1500

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Question:

Im missing my harness connector I have color white-yellow-Lt green-dk green-black-and Lt blue what is Lt blue for

asked by: Ricardo

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Expert Reply:

Most GM trucks use a pretty standard wire color for their tow packages, but I always recommend testing for function, and not just color. If you follow the bundle back there should be more wires than the ones you mentioned, for a total of 8. There's 7 for the trailer connector and 1 for a dedicated brake light circuit for adding a 3rd brake light on a camper shell.

The wires on your 2002 Silverado should be as follows :

White - ground
Yellow - Left turn and stop signal
Dark Green - Right turn and stop signal
Black - 12V aux power
Dark Blue - Brake output circuit (for brake controller)
Brown - Running light circuit
Light Blue - Dedicated brake lamp circuit for camper shells
Light Green - reverse light circuit.

You can use Hook Probe Circuit Tester # PTW2993 to verify the functions of each wire. You may find it easier if you have someone help you and run through the lights as it may be difficult to test at the back and run the lights. If you are not getting any signals at the wires, you will need to check the fuse box under the hood and make sure the fuses for the tow package are in place.

To replace the 7 way connector on the back of your Silverado, I recommend Pollak 7-Pole, RV-Style Trailer Connector Socket w/ Wiring Harness and Mounting Bracket # PK11898. It comes with the harness, plug, bracket and butt connectors so you can fully install it.

I linked the parts as well as a video of when I installed the wiring on a different year Silverado.

expert reply by: Robert C

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Answer 1

Typically, the tow package wiring is located along the frame rail or above the spare tire. The usual wire colors and their functions are as follows: Dark blue- brake controller output voltage Red or Orange- 12-volt accessory power Yellow- left…

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Answer 2

The Curt Trailer Hitch Receiver part #C14332 is a fit for a 2002 Chevrolet Silverado 1500 (All Configurations) and what I recommend using. The 10,000 lb or 12,000 lb (With Weight Distribution) towing capacity will far exceed the towing capacity of…

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Answer 3

This is not an uncommon situation for your generation of Chevy Silverado. If you remove the cover on the power distribution box, look for a row of larger fuses on the left side of the box (if facing the motor from the front of the truck). If there is…

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Answer 4

For a receiver hitch that will fit your 2002 Chevrolet Silverado 1500, I recommend going with the Draw-Tite Ultra Frame Trailer Hitch Receiver #41932. This has a max towing capacity of 12,000lbs and max tongue weight of 1,200lbs; or 14,000lbs and…

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Answer 5

If your Silverado has the factory plug located above the spare tire, the easiest way to install a 4-pole would be to use the Tow Ready #118384. Simply remove the protective cap covering the plug, plug in one of the connectors on the Tow Ready Harness…

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Answer 6

I have attached a photo for you below which shows how both a vehicle side and trailer side trailer connector is typically wired. I say typically because this is not always exact and so long as the trailer and vehicle side both match it will not…

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Answer 7

See the picture to the right for a wiring diagram of seven-way vehicle end trailer connector. If you click on it you can enlarge it. I have also included a trailer wiring FAQ page for you to check out.

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Answer 8

If your 2002 Chevrolet Silverado did not come wired with a 7-Way plug from the factory, you will need to connect the brake controller power wire and the electric brake wire underneath your hood to complete the brake controller installation. Once you…

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Answer 9

It is entirely possible that the blue brake output wire is not run from under the hood to the back of your 2002 Chevy Silverado. This was a common issue even on models that came with a factory tow package. Check under the hood between the fuse panel…

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Answer 10

In the tow package wire bundle located near the spare tire on your 2002 Chevrolet Silverado, there should be a darker blue wire to which you can connect the blue wire from your wire harness, #HM40975-11998, with a butt connector, #05732-2. If there…

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Answer 11

Thank you for being very detailed with your question! The first step I would take is to make sure everything on the truck and trailer is wired properly. Your Prodigy brake controller should have the wiring adapter #3025-P which is custom for your…

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Answer 12

Thanks for the photo of your trailer connector. I recommend replacing the connector in your vehicle. Since you already have the wires at the bed of your truck, you can use a 7-way blade-style connector, like the Pollak #PK12707, to provide a new…

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Color Code for Tow Package Wires on 2002 Chevy Silverado 1500

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