Trailer Has 2 Wires for Running Lights but Only One Running Light Pin on Trailer Connector
Updated 01/08/2025 | Published 04/10/2014 >
Question:
How do I go by hooking yellow and brown and green and brown for them to work
asked by: Robert
Expert Reply:
It sounds like you might have a wishbone type of wiring situation. This means that the running light circuit is split to 2 wires instead of just one for running lights on both sides of the trailer (yellow of left side, green for right side). This is so you do not have to run a jumper wire for running lights from one side of the trailer to the other.
You should just have to connect the 2 running light wires together and then connect them both to the running light pin or wire.
If you have a different wiring situation going on, let me know and I will be happy to help.
Featured Help Information
Miscellaneous Media
Continue Researching
- Article: Trailer Wiring Diagrams
- Search Results: coupler
- Shop: Optronics LED Trailer Clearance and Side Marker Light w/ Reflex Reflector - 6 Diodes - Amber Lens
- Video: Feature Review ThinLine Mini LED Side Marker or Clearance Light w/ Bracket
- Video: ThinLine Mini LED Side Marker or Clearance Light w/ Bracket Review
- Search Results: ranger trailer lights
- Q&A: How to Install New Trailer Lights that Only Have One Wire
- Video: Ventline E-Z Lift Ventadome Trailer Roof Vent Feature Review
- Search Results: trailer lights
- Video: Optronics Rectangular LED Trailer Clearance and Side Marker Light with Reflector Review
- Search Results: accessories and parts
- Search Results: roof vents
- Search Results: ceiling vent rv vents and fans
- Q&A: How Much Should It Cost To Completely Rewire a Trailer
- Q&A: How To Convert A Wishbone Trailer Wiring Harness To A Regular 4-Flat Trailer Wiring Harness
- Shop: Peterson Clearance or Side Marker Trailer Light w/ Reflector - Incandescent - Oblong - Amber Lens
- Shop: Ventline E-Z Lift Ventadome Trailer Roof Vent - Manual Lift - 14-1/4" x 14-1/4" - White
- Shop: Peterson Clearance or Side Marker Trailer Light w/ Reflector - Incandescent - Oblong - Red Lens
- Shop: 25 Ft 4-Way Trailer Wiring Harness - Wishbone Style - 25' Ground
- Shop: Optronics LED Clearance or Side Marker Light - Submersible - 3 Diodes - Rectangle - Amber Lens
- Shop: Peterson Clearance and Side Marker Trailer Light - Submersible - Incandescent - Amber Lens
- Q&A: Recommended Extremely Bright Trailer Reverse Light
- Q&A: Replacement Reverse Light for Ranger z521 Boat Trailer
- Video: An In-Depth Look at the LED Trailer Clearance or Side Marker Light with Chrome Bezel
- Video: Sealed, 2" Round Trailer Clearance, Side Marker Light, Flange Mount Review
- Q&A: Wiring Replacement 5-Pole Trailer Connector on 2012 Ranger Trailer
- Q&A: Recommended Spare Tire Carrier for Utility Trailer with Angle Iron Frame
- Search Results: fenders

Gary M.
1/8/2025
It appears that I have a wishbone wiring system. My question is "does it matter which side of the pigtail each wire is on,as long as the yellow and brown are connected together?"