How to Determine Wire Harness Functions for Brake Controller Wiring on a 2017 Nissan Armada

Question:

What are the wire colors on the 2017 armada factory brake control harness below the steering column? They are different than what is on a standard brake controler..

asked by: Jim

Expert Reply:

I can help you determine what wire on your harness is for which function, but unfortunately we don't know what color wire holds what function on your 2017 Nissan Armada. What you will need to do is use a circuit tester like part # PTW2991 and test your wiring harness.

You will be able to find 2 of the functions easily. One will have constant power and one will only have power when you press your brake pedal. This leaves you with the ground wire and the wire that sends power to your trailer brakes.

The easiest way to determine which of the 2 remaining wires is for which function is by applying 12V of power to the pin in the 5 o'clock position on your 7-Way connector at the rear of your Armada (see attached picture). Doing this will cause one of the remaining wires to show constant 12V power.

If you have the factory tow package on your Armada then you actually don't have to do any hardwiring to install a brake controller. You should be able to use an adapter like part # 3050-P which is compatible with Tekonsha brake controllers like the popular Prodigy P3 # 90195.

expert reply by: Jon G