Right Turn Signal and Brake Light Not Working
Question:
My trailer running lights are working on trailer but the turn signal and brake light are not working on right side. Every thing works on the left side.
asked by: Greg K
Expert Reply:
It sounds like you either have a blown fuse or a short on the right side turn light and brake light circuit.
First, I recommend checking the trailer wire connector on the vehicle. You can use a circuit tester, like # PTW2993, to test that power is coming from your vehicle for the right turn signal and brake light. The green wire on a 4-way connector is the wire that powers your right-side turn and brake light. On a 7-way connector, the right turn and stop light wire is connected to the blade in the 3:00 position. If there is no power at the connector on the vehicle, then the problem is in your vehicle wiring. You could attach the trailer to another vehicle to ensure that the lights on the trailer work with a functioning wiring system.
If you don't have power at the vehicle side connector, you probably either have a blown fuse, if you have a factory tow package, or a short in the aftermarket wiring harness. You will want to check your fuse box if you have a tow package. If you have an aftermarket wiring harness, you will want to check all of your connection points and wires on the harness.
If the connector on your vehicle has power, then the problem is on your trailer.
You will want to inspect the wire from the trailer connector to the taillight assembly for a damaged section that could cause a short. A short occurs when a wire has been pinched, cut, or torn and the wires come in contact with the trailer. This prevents the signal making it all the way to the light. Any wires that have been damaged need to be replaced.
You will want to check the ground connections if all of your wires seem to be working. Make sure the ground location is free of rust and paint that may be preventing the light from being securely grounded. Additionally, you may want to check the blub in your trailer light to ensure it isn't bad.
I have attached a FAQ on trailer wiring that has information on troubleshooting for you.
Products Referenced in This Question
Product Page this Question was Asked From
Peterson Combination Trailer Tail Light - 6 Function - Incandescent - Square - Passenger Side
- Trailer Lights
- Tail Lights
- Rear Reflector
- Side Marker
- Side Reflector
- Stop/Turn/Tail
- Square
- Surface Mount
- Non-Submersible Lights
- Incandescent Light
- 4-3/4L x 4-1/2W Inch
- Red
- Peterson
more information >
Continue Researching
- Shop: Trailer Wiring
- Shop: Vehicle Tow Bar Wiring
- Shop: Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit
- Shop: Hopkins Adapter 7-Pole to 6-Pole Universal with LED Tester - Electric Brake Center Pin
- Shop: Hook Probe Circuit Tester
- Shop: Replacement G-Force Controller for Demco Stay-IN-Play Duo Flat Tow Brake System
- Shop: Reinstall Kit for Demco Stay-IN-Play Duo Flat Tow Brake System
- Shop: Replacement Breakaway Switch Pin for Demco Air Force One and Stay-IN-Play Duo Braking Systems
- Shop: Second Vehicle Breakaway Kit for Blue Ox Patriot Flat Tow Brake Systems
- Video: Demco SBS Stay-IN-Play DUO Braking System Installation - 2022 Ford Maverick
- Video: Review of CURT Electrical Tools - Testers - C76NR
- Video: Roadmaster Tow Bar Wiring - Splices into Vehicle Wiring - RM-15267 Review
- Video: Roadmaster Universal Diode Wiring Kit Installation - 2022 Ford Maverick
- Q&A: How to Tell if Trailer Has 6-Way or 7-Way Installed
- Video: Hopkins Wiring - Wiring Adapters - HM47535 Review
- Video: Performance Tool Hook Probe Circuit Tester Review
- Search Results: screen door slide
- Video: Hopkins Wiring - Wiring Adapters - HM47445 Review
- Search Results: gooseneck wiring harness
- Q&A: Working Running Lights, But No Turn Signals or Brake Lights On Trailer
- Shop: Nerf Bars - Running Boards
- Article: Trailer Wiring Diagrams
- Search Results: tll12rk
- Q&A: Replacement 12" x 12" Screen Door Slider Replacement for Atwood Screen Door Slider
- Q&A: Trailer Lights Left Side Turn Signal and Brake Lights Not Working
- Q&A: Troubleshooting Right Side Turn Signal Not Working On Trailer
- Search Results: trailer hitch
- Search Results: rv hitch
- Shop: Trailer Hitch
- Shop: Camper Tie-Downs