What is Needed to Wire Truck Camper Shell Third Brake Light

Updated 08/02/2019 | Published 08/01/2019

Question:

How do you connect the brake light on a cap on a 2017 Sierra 2500?

asked by: Chad

Expert Reply:

Wiring the camper shell brake light on your 2017 GMC Sierra 2500 is very straightforward.

All you need to do is use the Pacer Performance 3rd Brake Light Logic Module # PP20-702, which has three wires: two yellow wires and a green wire. Simply tap into your Sierra's turn signals with the yellow wires and run the green wire to the third brake light. What this module does is filter out the turn signals and lights up the brake light when you hit the brakes.

If you take a look at the cut out of the linked installation instructions I added you can see exactly how it wires.

expert reply by: Kyle S