Troubleshooting Trailer Blinker that Stays Solid
Question:
i just hooked up my utilty trailer to my truck. when i put my right signal on it works but when i put my left signal on it wont blink. Both signals on the truck works fine. puzzled
asked by: Johnny W
Expert Reply:
First thing you should do at this point is test the 4-way of the wiring harness with a circuit tester part # PTW2993 for voltage on all of the right pins when the taillight signals are being applied. Just like in the video I attached.
If the voltage checks out there but the trailer lights still don't function right then the problem is on the trailer wiring. That would mean that problem is either due to a ground issue or a short issue.
Make sure that the trailer side connector 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.
If the problem is on the vehicle side then I would first recommend you double check how the harness is installed on your vehicle, make sure all of the connections are good and tight. You should check all towing related fuses and relays as well.
Products Referenced in This Question
Product Page this Question was Asked From
- Trailer Wiring
- Trailer Connectors
- Trailer End Connector
- 0 - 5 Feet Long
- Plug and Lead
- 4 Flat
- Draw-Tite
more information >
Continue Researching
- Shop: Go Power MC4 Output Cable with Male and Female Connectors - 30' Long
- Shop: B&W Turnoverball Underbed Gooseneck Trailer Hitch w/ Custom Installation Kit - 30,000 lbs
- Shop: Gooseneck Hitch
- Shop: Fifth Wheel Hitch
- Shop: Tonneau Cover
- Shop: Tail Light for Trailers Over 80" Wide - 7 Function - Incandescent - Square - Passenger Side
- Shop: Light Guard - Unpainted Steel for 440 Tail Light
- Shop: Optronics Combination Trailer Tail Light - 6 Function - Incandescent - Red Lens - Passenger Side
- Shop: LED Identification Light Bar for Trailers over 80" Wide - Submersible - 9 Diodes - Red Lens
- Shop: Replacement Center Cap for 15" or 16" Aluminum Viking Series Wheels - Gloss Black
- Search Results: dishes
- Search Results: b&w
- Search Results: tail lights
- Search Results: square jack
- Search Results: 182800
- Search Results: electric jack
- Search Results: center cap
- Shop: Front Mount Hitch
- Shop: Trailer Hitch
- Article: Towing a Trailer? Let's Talk About Brake Controllers
- Q&A: Solution for Trailer Turn Signals that Stay Solid When Brakes and Blinker is On
- Q&A: 4-Way Trailer Connector that has 5 Wires
- Video: EcoHitch Front Mount Trailer Hitch Installation - 2020 Chevrolet Silverado 2500
- Article: Trailer Wiring Diagrams
- Video: Fulton Trailer Jack - A-Frame Jack - F1413250334 Review
- Q&A: What is Real Difference Between Using Curt True Course Sway Control and Tuson Sway Control
- Q&A: Mounting Suggestion For E-track To Aluminum Utility Trailer
- Q&A: LED Indicator Stays On All the Time When Trailer is Plugged Into 7 to 4-Way Adapter 47345
- Q&A: Troubleshooting Trailer Lights with Only the Right Turn Signal Working
- Q&A: Lift Kit for Exiss Aluminum Trailer with 3,500 lb Trailer Axles