One Running Light On Trailer is Not Working, All Other Lights Working Fine
Question:
I replacing a light on my trailer. Everything else works but when I hook up the new light I can only get the turn signal and brake light to work not the tail light. All over lights working good.
asked by: Mathew
Expert Reply:
If just one running light is not working that indicates a ground problem. Ground problems normally show up when there is more draw on a system such as when you have the running lights on and then use another function like a turn signal or brake light. But they can show up any time.
Make sure that the vehicle side and trailer side connectors are clean and free of corrosion inside and out. The main connector grounds should be attached to clean and corrosion free bare metal surfaces.
The light grounds should also be attached to clean and corrosion free bare metal surfaces. If there is anything between a light ground and the metal trailer frame or if the trailer has an aluminum frame, tilt bed, or folding tongue, any of these things can interrupt the ground. Running jumper wires from the light grounds to the main trailer connector ground can help.
Product Page this Question was Asked From
Factory Style 7-Way and 4-Way Flat Vehicle End Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- No Converter
- Custom Fit
- 7 Round - Blade
- 4 Flat
- Hopkins
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Article: How to Choose the Right Trailer Hitch Class
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: Trailer Wiring Diagrams
- Article: My Trailer Hitch Doesn't Fit
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Q&A: Replacement AC Recommendations for Carrier V on a Jayco Class C Motorhome
- Q&A: Where is the Brake Controller Adapter Port on a 2019 Nissan Titan
- Q&A: Recommended Brake Controller for 2018 Nissan Titan With Factory 7-Way
- Article: Trailer Hitch Installation Tips
- Article: Choosing the Right Suspension Kit for Your Truck and Trailer
- Q&A: No 12V Power on 7-Way Trailer Connector on 2010 Nissan Titan
- Q&A: Will a Ball Mount with More Rise Reduce a Vehicle's Sag
- Q&A: Can The B&W Heavy-Duty Trailer Hitch BWHDRH25122 Clear An Aftermarket Bumper On A 1986 Chevy K20?