Troubleshooting 12 Volt Power Circuit Not Active on 2015 Chevy Silverado

Updated 04/03/2019 | Published 04/02/2019

Question:

All lights work on a new enclosed trailer interior lights do not come on but work on my old truck

asked by: Dan Z

Expert Reply:

Most likely the issue is that the 12 volt accessory circuit of the 7-way of your new truck just isn't active. If you check out the help article I attached you will see how to make these connections to activate this circuit. This is a pretty common issue for trucks like your 2015 Silverado.

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.

expert reply by: Jameson C