Troubleshooting Trailer Running Light Circuit Not Functioning on Nissan Frontier
Updated 04/17/2025 | Published 03/09/2018
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Question:
Installed harness with relays and plug in pigtail still no running lights? Trailer lights work fine with wifes car any thoughts.
asked by: Rodney
Expert Reply:
Trailer running lights not working with certain Nissan vehicles is a common problem with an easy fix. There is a relay for the trailer running light circuit that is located in the fuse box (in the cab). If that relay is missing or no longer functions then it can be replaced with one of the blue relays from the Curt Relay Kit # C57000.
The relay of the running light circuit on your 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.
Product Page this Question was Asked From
Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- No Converter
- No Tow Package
- 4 Flat
- Plug and Lead
- Plug-In
- Visible
- CURT
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Shaun S.
4/17/2025
I am having the same issue on my 2023 frontier. Will this same part work on it? If not what is the right part? Thanks