Troubleshooting New Brake Lights That Both Lights Flash On One Side
Updated 04/23/2021 | Published 04/21/2021 >
Question:
My new brake/ turn signal lights not working right ? When I turn on right signal both lady and right flash but left works fine! What could be the problem? Ok
asked by: Amy H
Expert Reply:
It looks like you purchased and installed the LED Trailer Tail Light w/ Reflector - Stop, Tail, Turn - Submersible - 7 Diodes - Round - Red Lens # STL13RFHXB on a trailer. Typically when this happens it indicates a bad ground somewhere on the trailer, so you'll want to check the ground connection on the right side light, as well as any ground wire for the entire trailer.
This would be a great starting point for your troubleshooting, but if all of your ground wires are firmly connected to a rust and paint free spot on the trailer, let me know and I can give you a few other things to look at.
Product Page this Question was Asked From
LED Trailer Light w/ Flange, Reflector - Brake, Tail, Turn - Submersible - Surface Mount - Red
- Trailer Lights
- Tail Lights
- Brake/Tail/Turn
- Round
- Surface Mount
- Submersible Lights
- LED Light
- 5-5/8 Inch Diameter
- Red
- Optronics
more information >
Continue Researching
- Q&A: Replacement Trailer Brake Turn Light for 1969 Apache Mesa Trailer
- Q&A: Where Do I Plug In Curt T-Connector C56040 On A 2025 Subaru Forester Hybrid?
- Article: Trailer Lighting Requirements
- Article: Best Vehicles to Flat Tow Behind an RV
- Q&A: Recommended Tail Lights For 4" Round Hole on Stock Trailer
- Q&A: Attaching Tow Bar to 2010 Jeep Wrangler With Rugged Ridge Bumper
- Article: Pintle-Hitches
- Q&A: What Air Bag Kit For 2025 GMC 1500 With Adaptive Ride Control
- Q&A: Replacement 5th Wheel LED Tail Light for a Round Red Light
- Q&A: Replacement Lights for 1989 Interstate Box Trailer
- Article: Wiring Trailer Lights with a 4-Way Plug (It's Easier Than You Think)
- Article: Trailer Wiring Diagrams
- Article: Testing Trailer Brake Magnets for Proper Function
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)

