Is Additional Relay Needed to Install Brake Controller in 2012 Nissan Titan for Brake Controller

Published 08/02/2018

Question:

Ordered controller and the harness that just plugs in to my factory harness under dash labled brake controller. All 3 blue relays are in place on truck under dash below steering wheel. i have done all of this so far. Took 10 minutes. I checked my trucks trailor plug by bumber lol. The pin that controlls electric brakes. Shows power when the trucks brakes are applied like it is suppose too. However, i was reading around about some other relay i need under the hood in the relay box behind battery. Here is a picture of that. Do i need a relay or not?

asked by: Steve N

Helpful Expert Reply:

You are good to go as-is. If the brake output circuit is active when you apply the vehicle brakes that means the controller is working like it should and no other relay would be needed.

expert reply by: Jameson C