Wiring a 3-Wire Trailer Light with White Black and Green Wires
Question:
Im trying to wire this tail light up. It has 3 wires, white, green, and black. What goes where? When turn signal is on or brakes are pressed, lights work as they should. However, when running lights are on, neither brake light or turn signal comes on.
asked by: Trevor S
Expert Reply:
A trailer light with 3 wires, like # RVSTL0060, that are black, white, and green generally the black wire is for running lights, green is for stop and turn signal, and white is for ground.
If the old light on your trailer only used 2 wires, then it likely was grounded through the mounting hardware. Which means you'll need to find a good ground bare metal location to connect the white wire to.
Make sure you check the function of the trailer's wiring before connecting to the new light with a circuit tester # PTW2993 before installing.
Products Referenced in This Question
Product Page this Question was Asked From
ONE LED RV Combination Tail Light - Stop, Tail, Turn - 1 Diode - Passenger Side
- Trailer Lights
- Tail Lights
- Stop/Turn/Tail
- Rectangle
- Surface Mount
- Non-Submersible Lights
- LED Light
- 8-5/8L x 3-3/16W Inch
- Red
- Optronics
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Shop: K-Source Universal Towing Mirrors - Clip On - Convex Mirror - Qty 2
- Shop: K-Source Snap & Zap Custom Towing Mirrors - Snap On - Driver and Passenger Side
- Shop: Towing Mirrors
- Q&A: Red, Black, and White Wire Functions on Old Trailer Light
- Article: Trailer Wiring Diagrams
- Q&A: How to Wire 3 Wire Trailer Tail Lights
- Shop: ONE LED RV Combination Tail Light - Stop, Tail, Turn - 1 Diode - Passenger Side
- Article: Wiring Trailer Lights with a 4-Way Plug (It's Easier Than You Think)
- Shop: Brake Controller
- Shop: Trailer Wiring
- Search Results: 7 pin connector
- Video: Review of Furrion Replacement Vision S Driver Side Marker Light and Bracket - FR66PR
- Q&A: Parts Needed To Add 7-way Connector And Trailer Brake Controller To 2021 Toyota Sienna
- Q&A: How to Install a Three Wire Trailer Light
- Shop: LED Clearance or Side Marker Trailer Light w/ Reflector - 1 Diode - Black Base - Amber Lens
- Shop: 7-Way RV Upgrade Kit for Trailer Brake Controller Installation - 12 Gauge Wires
- Shop: No-Drill Mount for Electrical Mounting Bracket - Short
- Shop: Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 7-Way Trailer Connector
- Q&A: How to Install Trailer Light with Red, Black, and Green Wires
- Shop: RV Exterior Lighting
- Q&A: What are the Red, Black, Green, and White Wires on a Trailer for
- Video: Optronics RV Lighting - Porch Light - ILL86BCB Review
- Shop: Nerf Bars - Running Boards
- Q&A: Troubleshooting Trailer Tail Light Wiring
- Video: Optronics Trailer Lights - Tail Lights - RVSTL0061 Review
- Video: Review of Hopkins Tools - 90 Degree Swing Out Level - HM05515
- Video: Hopkins Cross-Check Trailer Level Review
- Article: Routing the Power Wire for a Trailer Wiring Harness
- Shop: Trailer Hitch
- Video: Optronics Trailer Lights - Tail Lights - RVSTL0060 Review
on Trailer Lights
