Troubleshooting Trailer Running Light Circuit that Doesnt Activate with 12 Volts to Lights
Question:
Hi, On my Boat trailer I have the turn signals and brake lights working but no running lights or side markers. I have a light tester and it shows that there is power at the brown wire on the back of my vehicle. The ground is currently attached to the bolt that holds the coupler on the trailer. Im thinking maybe this isnt a good spot for it and maybe I need to just use a small screw instead.
asked by: Mike
0
Expert Reply:
I would try improving the ground like you mentioned. Ideally you would run the ground wire from the light assembly all the way back to the main ground circuit of the trailer harness. Doing this or even finding a better spot to ground the wire should solve the problem.
expert reply by:
Jameson C
0
Product Page this Question was Asked From
Featured Help Information
Miscellaneous Media
Continue Researching
- Article: Trailer Wiring Diagrams
- Q&A: Trailer Running Lights Do Not Work but Brake Lights and Turn Signals Do Work
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: Brake Controller Installation: Starting from Scratch
- Article: Testing Trailer Brake Magnets for Proper Function
- Article: Troubleshooting 4 and 5-Way Wiring Installations
- Article: Troubleshooting Brake Controller Installations
- Q&A: How to Make an Adapter to Go from Semi Truck 7-Way Round to RV Style 7-Way Blade on Trailer
- Q&A: Will The Curt Dinghy Wire Harness # C96JR Interfere With Activation Of A Blue Ox Patriot
- Q&A: Trailer Turn Signals Both Blink when Just Left Turn Signal is Activated
- Q&A: Trailer Lights Left Side Turn Signal and Brake Lights Not Working
- Q&A: Troubleshooting No Running Lights on Trailer but Turn Signals and Brake Lights Work
- Q&A: Troubleshooting Lack of 12V Power at 7-Way Trailer Connector on 2019 Ford F-150
- Article: Trailer Lighting Requirements