Voyager Brake Controller Installation on Toyota with Multiple Colored Wiring Harness

Published 02/23/2018

Question:

Voyager Brake Controller has the standard 4 wires, red, black, white, and blue. The harness that my Toyota has with it has a red, black, 2 skinny green, and I skinny brown wire. One of the skinny green has a slim second color running down it like a white color. The black has a red stripe running along it also.

asked by: Rick C

Expert Reply:

The Tekonsha Voyager Trailer Brake Controller # 39510 has the 4 wires for 12V power (black), brake output (blue), brake light input (red), and ground (white). To determine the correct wire functions of your Toyota's wiring harness to match, you will need to use a circuit tester like # PTW2993.

The 12V power function will have constant power, the brake light will only have power when the brake pedal is pressed down, and you can connect a jump wire from a battery to the 5 o'clock pin of your 7-way to give you a constant 12V power to determine the brake output wire which would not have any power otherwise. This will help you determine the correct fits.

expert reply by: Jason S