Installing a Brake Controller Based on Wire Function Because Wire Colors Arent Consistent

Updated 03/13/2018 | Published 03/12/2018

Products Featured in This Question

Draw-Tite Activator IV Trailer Brake Controller - Up to 4 Axles - Time Delayed

(357)

$103.67

Hook Probe Circuit Tester

(60)

$12.41

Question:

I have the Draw-Tite Brake Controller 5504. I have installed this on a 2013 GMC Sierra. I used the video you guys provided This installation is a bit incorrect for my vehicle. The installer is shown using the white/lt blue wire from the harness pigtail to the RED line into the controller, so I hooked it up the same way. When I use the MANUAL function on the controller, the brakes engage and I get stop lights. When I use the pedal, I get nothing. It appears the ORANGE wire your video shows as unused is actually the wire I needed. What then, is the White/Lt Blue wire for?

asked by: Dave

Expert Reply:

The Draw-Tite Activator # 5504 installation will have different colored wiring it connects to depending on the specific make/model/year of the vehicle it is being installed on. You will need to test the wires with a circuit tester like # PTW2993 for function to see what will match the functions of the brake controller.

The brake controller will have 2 inputs, 1 output, and a ground.
Black is the 12V input
White is the Ground
Red is the cold side of the brake light switch (only hot when the brake pedal is pressed)
Blue is the brake controller output to your 7-way and will eventually connect to the 5 o'clock position of your 7-way trailer connection.

I've attached an article to assist.