Why Do Some Trailer Tail Lights have 3 Wires and Some have 2 Wires
Question:
I bought a set of aftermarket LED trailer lights and it has wires coming out of the back that I never seen before. The colors are 1 red, 1 gray, and 1 white wires. Can someone help me out with this problem. I think I bought the wrong lights. Thanks
asked by: Tom M
Expert Reply:
A lot of trailer lights have 3 wires. One wire for running lights, one wire for turn signal and brake lights, and one wire for ground. Check the back of the light assemblies because it might indicate the functions of the wires.
Other lights may only have 2 wires. These lights will have a wire for running lights and the other for turn signal and brake lights. There is no ground wire because they ground through the mounting hardware.
If you can tell me the manufacturer and model number of the lights I can check to see if there is anything special about them or the wire functions.
Product Page this Question was Asked From
Continue Researching
- Shop: Vehicle Tow Bar Wiring
- Search Results: wiring harness tow bar wiring
- Shop: Curt Universal Tail Light Wiring Kit for Towed Vehicles
- Shop: Trailer Wiring
- Shop: Trailer Hitch
- Shop: LCD Digital Circuit Tester
- Video: Curt Universal Tail Light Wiring Kit Installation - 2020 Ford F-150
- Article: Troubleshooting 4 and 5-Way Wiring Installations
- Search Results: trailer hitch
- Video: Trailer Hitch Installation - 2000 Honda CR-V
- Video: Trailer Hitch Installation - 2001 Honda CR-V
- Search Results: tow bar wiring
- Shop: Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit
- Shop: Curt Cam Buckle Stabilizing Strap for Hitch-Mounted Accessories - 61" x 1" - Qty 1
- Shop: etrailer Trailer Hitch Receiver - Custom Fit - Matte Black Finish - Class III - 2"
- Shop: etrailer Trailer Hitch Receiver - Custom Fit - Matte Black Finish - Class III - 2"
- Shop: Curt Trailer Hitch Receiver - Custom Fit - Class III - 2"
- Video: Performance Tool LCD Digital Circuit Tester Review
- Q&A: Should There Be Continuity Between Running Lights And Ground Circuit While Bulb Is Disconnected
- Search Results: 7 pin to 6 pin
- Q&A: No Running Lights on Toad Vehicle but All Other Lights Work
- Q&A: Working Running Lights, But No Turn Signals or Brake Lights On Trailer
- Q&A: Troubleshooting Running Light Circuit of Curt Trailer Wiring # C56673 Not Functioning
- Q&A: Trailer Turn Signals Not Working with Curt Trailer Wiring Harness on 2000 Toyota Sienna
- Q&A: Turn Signals on Trailer Not Working When Running Lights are On
- Q&A: Are Diodes of Curt Universal Tail Light Kit part # C63CR Designed to be Replaced
- Search Results: 9~44 drum
- Article: Trailer Wiring Diagrams
- Article: Rooftop Cargo Carriers
- Article: Gooseneck to 5th Wheel Adapters