How To Attach New Trailer Connector On Boat Trailer With Wishbone Wiring
Updated 04/17/2017 | Published 04/14/2017
Question:
My trailer wires were cut. Theres a green, green/brown, yellow, yellow/brown, and white wires. The new plug has blue, green, yellow, brown, and white. What color combos go together. Ive tried everything that makes sense.
asked by: Lisa D
Expert Reply:
It sounds like your trailer has a wishbone harness. A wishbone harness splits the running light circuit at the connector so no jumper is needed to be run from one side of the trailer to the other side.
On a wishbone 4-Way connector the white wire is ground, yellow is left turn signal, yellow/brown is left side running lights, green is right turn signal, and green/brown is right side running lights.
You can use a circuit tester like part # PTW2993 and test the pins on the vehicle side trailer connector.
On the new trailer connector splice white to white, yellow to yellow, green to green, and connect the yellow/brown and green/brown to the brown wire. The blue wire can just be taped off. It would be used for brakes but it sounds like your trailer does not have brakes so it will not be needed.
Product Page this Question was Asked From
Featured Help Information
Miscellaneous Media
Continue Researching
- Q&A: Trailer Running Lights Do Not Work but Brake Lights and Turn Signals Do Work
- Article: Trailer Wiring Diagrams
- Q&A: How to Test Brake Controller without Trailer Connected
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Q&A: Trailers Right Tail Light Stays on Even While Unplugged
- Article: Brake Controller Installation: Starting from Scratch
- Q&A: Recommended Warm White 4-1/4" Diameter Puck Light
- Q&A: Troubleshooting Right Side Trailer Lights Not Working, Left Side Working Correctly
- Article: Troubleshooting 4 and 5-Way Wiring Installations
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: Can I Use a 4 Way Vehicle Connector with 7 Way Adapter and the Curt Echo Brake Controller?
- Q&A: Troubleshooting Blown Vehicle Fuses Every Time Trailer is Connected
- Article: Wiring Trailer Lights with a 4-Way Plug (It's Easier Than You Think)
- Article: Trailer Lights Not Working After Winter? Test Truck or Trailer