Wishbone Trailer Wiring Harness to Run 2 Sets of Trailer Lights
Updated 01/12/2026 | Published 01/09/2026
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Question:
Is there such thing as a 4 Flat trailer harness made in a Y so that you could run 2 sets of trailer lights? Plug male into vehicle and then have 2 female ends.....
asked by: Ken B
0
Expert Reply:
Hey Ken!
There are 4-flat trailer wiring setups to run 2 sets of trailer lights. Optronics offers the 25 ft. Wishbone 4-Way Trailer Wiring Harness # A25W42B and the 40 ft 4-Way Wishbone Trailer Wiring Harness # A40W42B.
These come with bare wires that splice into your trailer lights' wiring. By "female ends" are you referring to vehicle end connectors?
expert reply by:
Josh B
0
Product Page this Question was Asked From
25 ft. Wishbone 4-Way Trailer Wiring Harness with 42" Ground Wire
- Trailer Wiring
- Trailer Connectors
- Trailer End Connector
- 4 Flat
- Plug and Lead
- Optronics
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Ken B.
1/9/2026
What I'm looking for I found on e bay, but looking for something of much better quality. It is simply a "Y" or "splitter". I don't know how to post a picture on here. It is about 15-17" long. You plug single "Male" 4-flat plug into "Female" on your vehicle. The other end would have 2 "Female" 4-flat plugs that are the same as on your vehicle. Now you can plug 2 different 4-flat plugs into the "Y", therefore supplying power to 2 different sets of lights on the back of the vehicle.....I hope this makes sense.