Troubleshooting Right Blinker Not Functioning on a Trailer
Question:
right rear turn light on my trailer doesnt work or right side flasher either but all other lights and left turn signal work, all bulbs are good, what is problem
asked by: Mike M
Expert Reply:
The first thing I would do is check the ground on the right tail light assembly. The ground may not be strong enough to carry the amperage.You will want to make sure the ground is attached to a clean metal surface or if the assembly grounds through the mounting hardware you will want to make sure that surface is a clean metal surface too.
If that checks out next you will need use a circuit tester like our part # PTW2993 and test the right turn signal circuit on the trailer connector on your vehicle to see if it gets intermittent voltage when the blinker is on. Check out the video I attached that shows how this would be done.
If the voltage looks good there then you know the problem lies somewhere between the connector on the trailer and the light assemblies. Most likely its corrosion in the connector or a loose or exposed wire somewhere and will need to be repaired as necessary.
If the voltage was not there when you tested the vehicle connector then you know the problem is on the vehicle side of the wiring. You will want to check the back of the connector for corrosion or anything else that could cause a short and fix as necessary.
I attached an FAQ article on trailer wiring for you to check out also.
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
- Q&A: Troubleshooting Right Turn Signal Not Working on Trailer Taillights
- Shop: Trailer Wiring
- Q&A: Right Turn Signal and Brake Lights Not Working on Trailer Towed by a 2006 Dodge Ram 1500
- Article: Trailer Wiring Diagrams
- Shop: Hook Probe Circuit Tester
- Q&A: Right Tail Lights on Trailer and Vehicle Stay Solid When Right Turn Signal is On
- Q&A: Troubleshooting Right Side Turn Signal Not Working On Trailer
- Video: Curt Trailer Wiring Harness Installation - 2013 Kia Soul
- Video: Best 2012 Kia Soul Trailer Wiring Options
- Video: Curt T-Connector Vehicle Wiring Harness Installation - 2021 Hyundai Tucson
- Shop: Trailair Air Ride 5th Wheel Pin Box - Lippert 1116 - 21,000 lbs
- Video: Review of Lippert Fifth Wheel King Pin - Upgraded Pin Box - LC155943
- Search Results: 7 pin trailer connector
- Q&A: Trailer Turn Signals and Brake Lights Not Working with 2011 GMC Sierra
- Q&A: How Do I Clean the Terminals in a 7-Way Connector
- Q&A: Right Turn Signal and Brake Light Not Working
- Search Results: tongue extender
- Shop: Trailer Wiring Junction Box
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Search Results: 44649
- Video: Choosing the Right Trailer Wiring
- Shop: Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector
- Shop: Trailer Hitch
- Article: How to Choose the Right Trailer Hitch Class
- Shop: 7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket - Vehicle End
- Video: Choosing the Right Brake Controller
- Search Results: 68149
- Shop: Brake Controller
- Search Results: 25580
- Shop: Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires