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Wiring Guide for Replacing 4-Way with Blue Ox 6-Pole  

Updated 02/16/2026 | Published 05/12/2021

Question:

I purchased Hopkins towed vehicle wiring kitinch #56200 which has a 3 wire connector, brown, green, yellow plus white ground. How do I attach this to the Blue Ox 6-Pole, Round Pin, Trailer Wiring Socket - Vehicle End Item # BX294-0902 ?

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Expert Reply:

If you cut off the 4-way of the # HM56200 that you have and wanted to wire it to the Blue Ox Connector part # BX294-0902 you'd need to use the attached picture as a guide to get all of the functions correct.

expert reply by:
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Jameson C
Wiring diagram
Wiring diagram
(click to enlarge)
Roger D. profile picture

Roger D.

2/14/2026

What are the black wires in the picture. The original poster had a 4 way plug with white, brown, yellow and green. Thanks for your help.

Jameson C. profile picture
Etrailer Expert

Jameson C.

2/16/2026

@RogerD that's a 12 volt charge wire.

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