Wire Colors for Installing Brake Controller in 2008 Chevy Silverado
Updated 07/12/2018 | Published 07/11/2018
Question:
Ok you sent me how to hook up an agility brake controller to a 2008 gmc sierra and it says light blue / orange wire to tje red wire does tbat mean both wires go to the red or just one and also do i need to hook both red wires under my hood to the fise box
asked by: Eric P
Expert Reply:
When installing a brake controller in your 2008 GMC Sierra the red wire on the vehicle connects to the black wire on the controller. The dark blue wire on the vehicle connects to the blue wire on the controller. The light blue or orange wire on the vehicle connects to the red wire on the controller and the white wire on the vehicle connects to the white wire on the controller.
The wire you'll use for the red wire of the controller will either be orange or light blue. You can test it with a circuit tester like part # PTW2993 to verify that it only has 12 volts when the brakes are applied. Check out the install help article I attached as well.
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