[nutsandboldts05]

So here's what's going on:

When I turn my head lights on, my trailer turn signals and brake light don't work. They still work on the truck, just not back at the trailer wire connection. When I turn the head lights off, everything works fine. Maybe its my ground? What did you hook your ground to?

My ground is hooked onto a cross member on the truck box and I wonder if that's the problem, maybe?

 

[SDHarleydad]

So here's what's going on:

When I turn my head lights on, my trailer turn signals and brake light don't work. They still work on the truck, just not back at the trailer wire connection. When I turn the head lights off, everything works fine. Maybe its my ground? What did you hook your ground to?

My ground is hooked onto a cross member on the truck box and I wonder if that's the problem, maybe?

Did you use a Nissan wiring harness or aftermarket? If it is aftermarket..... that is your problem. It needs the relays.

 

[nutsandboldts05]

https://www.4x4parts.com/catalog/frontier-towing-light-wiring-kit-p-3288.html

I ordered the one from 4x4parts.com. It has the big black box.

 

[dubie2003]

I would suggest that you re-check the wiring. If anything, check to make sure there are no shorts in the system with an ohm meter.

SDHarleydad is confusing 2nd gen frontiers with the 1st gen ones. The 2nd gens have a lot more electronics and aftermarket hack jobs cause extreme issues resulting in burnt wiring to cooked compluters.

 

[SDHarleydad]

SDHarleydad is confusing 2nd gen frontiers with the 1st gen ones. The 2nd gens have a lot more electronics and aftermarket hack jobs cause extreme issues resulting in burnt wiring to cooked compluters.

Yeah.... what he said. Sorry!

 

[nutsandboldts05]

Its all good Harley. Thanks guys... I'll go thru it and check it out.

 

[nutsandboldts05]

We have a trailer wiring harness tester. Plugged it into the end of my wiring harness, everything is fine when the head lights are off. As soon as I turn the head lights on, nothing works anymore. Any ideas on what to check?