How to Find the Correct Stoplight Circuit Wire for Installing a Brake Controller

Question:

what are the colors of the wires for the Cold Side 2001 Toyota tacoma?

asked by: Larry

Expert Reply:

Sound like you are trying to install a brake controller in your 2001 Toyota Tacoma and are looking for the stoplight circuit at the brake pedal switch. I have a way for you to determine which wire is the correct one, but we don't know what color it would be.

You would need to use a circuit tester like part # PTW2993 to test all of the wires at the switch until you find one that only has voltage when the brakes are applied and none when they are released.

expert reply by: Jameson C