Troubleshooting No Trailer Running Lights with Curt T-Connector # C56281 on 2019 Nissan Pathfinder
Updated 12/06/2025 | Published 10/08/2019
Products Featured in This Question
Question:
I purchased the Curt 4 pole wiring kit for my 2019 Nissan Pathfinder. I have brake lights and turn signals but no running lights. I’ve seen past answers talking about a fuse box behind the passenger kick plate mine is on driver side and has no provision for a relay to be plugged in. I’ve checked all the wiring for the kit and still nothing. What am I missing?
asked by: James B
Expert Reply:
If the trailer running lights aren't working with the Curt T-Connector Vehicle Wiring Harness # C56281 installed on your 2019 Nissan Pathfinder, most likely the two additional blue relays that are included in the kit just need to be installed. The fuse box where these will be inserted on your Pathfinder is actually located under the hood, directly behind the driver's side head light.
I have attached an image below that shows the box with the two relays already inserted (there will also be a lid that needs to be taken off first). Pathfinder's with the factory tow package would already have these in place, but on those without the factory package the fuse box will have two empty cavities.
If this doesn't resolve the issue please let me know and we can continue to troubleshoot.
Product Page this Question was Asked From
Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 7-Way Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- No Converter
- Factory Tow Package
- 7 Blade
- Plug and Lead
- Plug-In
- Visible
- CURT
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Search Results: trailer wiring
- Search Results: trailer light boxes
- Video: Curt T-Connector Vehicle Wiring Harness Installation - 2017 Nissan Pathfinder
- Video: Curt Custom Fit Vehicle Wiring - Trailer Hitch Wiring - C55513 Review
- Search Results: transition
- Search Results: equalizer 90~00~1000
- Shop: Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Shop: Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Shop: Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Q&A: Trailer Wiring Harness Recommendation for 2017 Nissan Pathfinder
- Q&A: How to Know if 2018 Nissan Pathfinder Has Factory Tow Package
- Shop: EcoHitch Hidden Front Mount Trailer Hitch Receiver - Custom Fit - 2"
- Video: TireMinder i10 TPMS for RVs and Trailers w/ Signal Booster Review
- Shop: Equal-i-zer Weight Distribution System w/ 4-Point Sway Control - 10,000 lbs GTW, 1,000 lbs TW
- Q&A: Troubleshooting Curt Trailer Wiring Install Where There is No Power to Anything
- Search Results: 8k hybrid
- Shop: TireMinder i10 TPMS for RVs and Trailers w/ Signal Booster - 6 Flow Through Tire Sensors
- Search Results: 88204
- Search Results: built~in dual hitch trailer hitch ball mount
- Shop: Locking L-Shaped Handle - 4" Long - Chrome
- Video: Installing the EcoHitch Hidden Front Mount Trailer Hitch Receiver on a 2020 Ram 2500
- Shop: Trailer Hitch
- Q&A: Where are the Trailer Wiring Relays on 2015 Nissan Pathfinder
- Q&A: Solution for 2015 Nissan Pathfinder No Trailer Running Lights
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Video: How to Choose a Trailer Brake Controller
- Article: Trailer Wiring Diagrams
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
on Custom Fit Vehicle Wiring
En
6/29/2025
Tried the above advice, still the running lights won’t come on. It everything else is working (brake and turn lights). Is there anything else we can try?