Troubleshooting Left Stop/Turn Circuit of Trailer Wiring Not Working
Question:
All lights work on my trailer but left turnal and left brake, all other functions are working. I hooked trailer up to friends truck and lights worked fine so im assoming the problem is my truck. The other day the light randomly started working fine for about an hour and then stopped again. Does anyone have any ideas?
asked by: Austin
Expert Reply:
It's probably a bit of corrosion that's on the pins of your trailer wiring connection on the vehicle side which is causing an intermittent at best connection. Typically just taking some sandpaper to the pins of the 4-way will take care of this.
I attached a link to a page that has a help article on troubleshooting trailer wiring for you to check out as well.
Product Page this Question was Asked From
Curt 7-Way to RV Socket LED Circuit Tester - Vehicle End
- Electrical Tools
- Testers
- Circuit Tester
- Tow Function Tester
- CURT
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: Recommended Flat Towing Set Up for a 2019 Chevy Colorado
- Article: Trailer Wiring Diagrams
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Article: How to Measure for Trailer Hitch Drop
- Q&A: Suspension Enhancement Recommendation for 2019 Toyota RAV4
- Q&A: 7-Way Tester Recommendation for a Land Rover with 7-Way and P3 Brake Controller
- Article: Brake Controller Installation: Starting from Scratch
- Q&A: Extended Ball Mount for a 2" Receiver with a 1" Shank Hole
- Q&A: Can a 2019 Chevrolet Colorado 4x4 Be Flat-Towed
- Q&A: Are There 7-Way Trailer Wiring Harnesses for a 2023 Kia Telluride
- Article: Testing Trailer Brake Magnets for Proper Function
- Q&A: Is There B and W Companion Hitch that Fits OEM Pucks of 2023 GMC 3500 Sierra
- Article: Roadmaster Vehicle Specific Base Plates