Troubleshooting No Trailer Running Lights on a 2008 Nissan Frontier

Question:

I have turn signals and brake lights on the trailer but I have no running lights. The lights on the trailer work on another vehicle. I checked the socket on the frame rail under the truck and I am not getting any running light power there. Is there a fuse, relay or seperate relay for running lights? Ive looked at the fuse panel under the hood I am not aware of any others and found nothing labeled for trailer lights. I found relays for the signals but no others. Is there a seperate fuse for running lights? What would it be labeled? Please help me correct this problem...I need the trailer soon.

asked by: Jim K

Expert Reply:

If the harness you installed is aftermarket and not from the factory, then the taillights will not work unless you have a factory tow package. If you do not have a factory tow package, you can use a different harness, # 118266. I have included installation details and an installation video below.

I checked a colleagues truck, he has a 2004 model, so there may be some differences. But, there are some fuses under your hood, passenger side, that may say something like HD tail light. One is a 20 amp fuse and one is a 40 amp fuse. It could be that you need fuses in these spots for the lights to work.

expert reply by: Michael H