No Power for Trailer Lights on a 7-Way Trailer Connector on a 2011 Chevy Silverado

Updated 12/16/2011 | Published 12/15/2011

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Twist-in, 7-Pole, RV-Style Trailer Connector for Chevy and GMC Vehicles - Vehicle End

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$21.09

Zinc Plated Hex Flange Nut - M6

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Zinc Plated Hex Flange Nut - M8

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Question:

My silverado trailer lights will not work. I need to know what connections under the hood I need to connect or what connections I need to make. I have already put the connector on the rear bumper and plugged it in to the existing harness. There is no current to the existing harness for the trailer.

asked by: Ken W

Expert Reply:

We have an FAQ article that will help with your 2011 Chevy Silverado. I have included some excerpts from it below and I have included a link to it for you. In addition to these steps, you will want to check the vehicle owners manual for the location of any fuses and/or relays associated with the trailer wiring to make sure they are present and working.

There are two wires under the hood that have to be connected to make the tow package functional, one is the power wire to the brake control and the other is the battery charge line to the 7 way connector. These wires are both Red/Black with eyelets on them.

They are coiled up under the hood and will need to be connected to the under hood fuse box. One of the wires is located between the under hood fuse box and the left (driver) side fender. The other is located under the master cylinder/brake booster assembly.

The battery charge wire and the power wire to the brake control have different size eyelets on them and will connect to the threaded studs under the Gray handle at the front of the fuse box. The two studs are also different size.

GM does not supply the attaching nuts required to secure the wires to the studs. You will need # 185916 and # 185917.

expert reply by: Michael H