Troubleshooting Trailer Running Light Circuit Not Functioning on Nissan Frontier
Updated 04/17/2025 | Published 03/09/2018
Products Featured in This Question
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
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Shop: Curt Relay Kit for Nissan Armada or Titan Aftermarket Tow Package
- Shop: Trailer Wiring
- Video: Comprehensive Review: Curt Relay Kit for Nissan Armada or Titan Aftermarket Tow Package
- Search Results: 38666~1
- Q&A: 2022 Nissan Frontier SV - Troubleshooting No Running Lights On Trailer
- Shop: Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Q&A: Solution for Trailer Running Light Circuit Not Active on 2019 Nissan Frontier
- Q&A: Troubleshooting Trailer Running Light Circuit of 2018 Nissan Frontier Not Active
- Q&A: Trailer Hitch & Wiring For 2024 Nissan Frontier
- Shop: Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector
- Search Results: trailer winch
- Search Results: trailer axles
- Shop: CE Smith Trailer Axle Beam with Studded Hubs - 5 on 4-1/2" - 54" Long - 1.8K
- Search Results: trailer jack thrust bearings
- Shop: Stromberg Carlson Adjustable Accessory Hitch Receiver - 49-1/2" to 76-1/2" Wide - 2"
- Video: Install: Replacement Custom Multi-Tow 7-Way and 4-Way Trailer Connectors on a 2005 Nissan Armada
- Shop: Brake Controller
- Shop: Trailer Hitch
- Shop: 7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket - Vehicle End
- Shop: Curt Trailer Hitch Receiver - Custom Fit - Class III - 2"
- Search Results: paddle latch
- Search Results: cam bar
- Search Results: trailer door parts
- Q&A: Where is Trailer Running Lights Relay on Nissan Frontier
- Shop: Suspension Enhancement
- Video: Setting up the Curt Trailer Hitch Receiver on a 2010 Nissan Armada
- Video: Beginner’s Guide to Installing the Curt Trailer Hitch Receiver on a 2005 Nissan Armada
- Q&A: Trailer Running Lights Not Working on 2012 Nissan Xterra
- Q&A: Recommended Wiring Harness and Relays for a 2025 Nissan Frontier
- Article: Trailer Wiring Diagrams
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