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How To Connect 4-Way Trailer Connector On Motorcycle To Trailer With 5-Pole Round .


I have a motorcycle with a 4 flat and a trailer with a 5 round what do I need to plug them together


Helpful Expert Reply:

You will need to use a converter to make the 4-way wiring on your motorcycle match the 5-pole on your trailer.

The converter I recommend is the Tow Ready Tail Light Converter # 118158. You will need to cut the 4-way connector off on the motorcycle side and splice the # 118158 converter. Then you can attach a 5-pole trailer connector like part # PK11502 to the converter output wires. You can use a circuit tester like part # PTW2993 to verify the wire functions.

Here are the harness wire assignments by function and color:
White = Ground
Green = Right Turn and Brake
Yellow = Left Turn and Brake
Brown = Running (Tail) Lights
Red = Auxiliary Circuit (if needed)

I also attached a link to a helpful article about trailer wiring you can check out.

helpful expert reply by:
Jeffrey L

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