Troubleshooting Trailer Brakes Locking Up After Wiring 2010 Nissan Frontier with Brake Controller

Question:

Ive wired the following controller and wiring harness to my 2010 Frontier. All controls work fine, lights etc. BUT the brake output power on my blade connector is reading 12v as soon as I out the key in. Trailer brakes locked. Problem!

1

Helpful Expert Reply:

The issue you are having on your 2010 Nissan Frontier is a common problem that has shown up when installing a brake controller # C51110 on certain Nissan vehicles.

This issue is for some reason the Nissan wiring was reversed during manufacturing. The solution can be found ins the attached article.

Basically, you will have to switch the black and blue wires location on the brake harness plug. There are couple of ways to swap the wires. The article will explain how to perform both solutions.

helpful expert reply by:
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Jared P

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