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Wire Color Functions on Hopkins 20146 or 20046 7-Way Harness  


I need to know the wire colors as Im replacing my boat trailer harness. White = Ground Black = Power Red = left signal Brown = Right signal Blue = Brakes Green = Running lights This is where im unsure...I think???? Yellow = Reverse/backup keeps trailer from locking up during back up Am I correct? I have a 2008 Competitive boat trailer


Expert Reply:

If you are referring to the wire colors on your Hopkins 20146 7-Way trailer harness, which has the same setup as our Hopkins # H20046, then you are absolutely correct.

The yellow wire is listed as the aux function, which is typically used for reverse/backup lights if the trailer is equipped with them or to trigger that reverse lockout solenoid that you mentioned on a boat trailer. All the other functions you listed are correct as well.

I have attached a short install video that you might also find helpful.

expert reply by:
Chris R

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