Troubleshooting No Trailer Running Light Fuse with 2005 Nissan Frontier

Question:

The system has been working fine for years. Plugged in trailer and have no running lights, other functions work fine. Tested 4-way on truck and have no power on that terminal post. Is there a way to test the relays or can they be reset?

asked by: Don N

Expert Reply:

Testing relays is difficult, typically easiest way is to try putting a known working relay in place of the suspected bad one. If the circuit starts working then you know the relay is bad.

The relay of the running light circuit on your 2005 Nissan Frontier is in the relay harness behind the passenger floorboard kick panel.

If you check out the install video I attached the first thing shown is how to access this area.

For a replacement then you'd want the one of the blue relays from the Curt Relay Kit # C57000.

expert reply by: Jameson C