Blue Ox EZ Light Wire Color Functions for 6-Way Connector Installation
Updated 02/20/2026 | Published 02/17/2026
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Question:
On this wiring harness: BLU55HR Can you tell me what color wires control what on the flat plug? I would like to replace the flat plug with a 6 pin round . Thank you
asked by: Cory H
Expert Reply:
Hey Cory! The Blue Ox EZ Light # BLU55HR follows the standard for 4-way wiring colors. The white is ground, brown is tail, green is right turn/brake, and yellow is left turn/brake.
You can add a 6-way connector using the RoadMaster 6-Wire Trailer Connector # RM-910030-7. If you need a mounting bracket # RM-910030-5 is also available. I attached a diagram below which shows how to wire the connector for your reference.
What vehicle are you setting up to flat tow?
(click to enlarge)
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