How Can 5-Way Trailer Harness of Motorcycle Connect to Trailer 4-Way
Updated 09/22/2025 | Published 08/29/2025
Question:
have 5 pin coming out of motorcycle, going into 4 pin [both are flat pin connectors 5th wire from bike is brake, if I hook brake to turns it dims the brake lights significantly, do you have a splitter or? that will prevent this and have full brightness on turn and brake?
asked by: Thomas J
Expert Reply:
Hey Thomas, what you need is a signal converter to take your motorcycle taillights that have the stop lights and the turn signals on separate circuits to be combined to match the taillight setup of your trailer. For that you'd want the part # RM-732. You can install this on the motorcycle wiring or the trailer wiring.
Product Page this Question was Asked From
Roadmaster Brite-Lite 3-to-2 Tail Light Converter for Towed Vehicles
- Flat Tow Wiring Harness
- Splices into Vehicle Wiring
- Tail Light Converter
- Universal Fit
- Roadmaster
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Jameson C.
9/12/2025
Hey Thomas, did the signal converter work out for your motorcycle and trailer setup? I'm asking because knowing your outcome could help others facing similar wiring challenges.