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
16 Gauge, 4 Conductor Bonded Parallel Wire - Per Foot
- Wiring
- Wire
- Bonded Wire
- 4 Wire
- 16 Gauge
- Deka
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Shop: Trailer Hitch
- Article: Trailer Wiring Diagrams
- Shop: Trailer Wiring
- Video: Installation: Draw-Tite Trailer Hitch Receiver on a 2018 Ford EcoSport
- Shop: Draw-Tite Trailer Hitch Receiver - Custom Fit - Class II - 1-1/4"
- Q&A: Wiring New 3 Wire Light on Trailer to Replace 2 Wire Light
- Search Results: leaf spring shackle
- Shop: Brake Controller
- Q&A: How to Wire 3 Wire Trailer Tail Lights
- Shop: Replacement Shackle Strap - 2-5/8" Long
- Shop: Vehicle Tow Bar Wiring
- Shop: 2nd Tier Load Bar System for Malone MicroSport Trailer - 50" Crossbars - 100 lbs
- Shop: Malone's MPG481 Trailer Storage Trunk - Fits EcoLight, MicroSport & LowMax Trailers - Lockable
- Video: Complete Breakdown of the Optronics LED Trailer Tail Light-STL42RB
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Shop: etrailer Electric Trailer Brakes - Self-Adjusting - 10" - Left/Right Hand Assemblies - 3.5K
- Shop: EcoHitch Hidden Trailer Hitch Receiver - Custom Fit - 2"
- Search Results: submersible lights trailer lights
- Video: Optronics Back Up Light Spec Review
- Search Results: destination e
- Shop: Optronics LED Trailer Tail Light - Stop, Turn, Tail - Submersible - 10 Diodes - Round - Red Lens
- Q&A: Replacement Tail Lights for a 2008 Featherlite 4926 Car Hauler Trailer
- Video: All You Need to Know About the Storage Trunk for Malone MicroSport and XtraLight Trailers
- Search Results: 76905
- Search Results: e66pr
- Q&A: Need OEM Rectangular Socket to 7 Way Adapter for 2001 Ford F-250 Super Duty
- Search Results: sh66vr
- Search Results: 13485
- Video: Let’s Check Out the 90-Degree T-Style Hook and Keeper Door Holder for Enclosed Trailer
- Shop: Gooseneck Hitch
on Wiring
