What is Function of Black Wire on Trailer 7-Way part # HM20048
Published 03/30/2017
Question:
Just purchased 7 way trailer harness. What is black wire for?Looking at your on line diagram there is a purple wire for back up lights but i dont see black.there is no purple on this harness. Hm20048 item number
asked by: Dave W
0
Expert Reply:
The black wire of the Hopkins 7-Way Molded Trailer Wire Connector # HM20048 carries the 12 volt accessory circuit. This is the circuit that will typically power interior lights or charge a trailer's battery.
I attached a help article that covers trailer wiring for you to check out as well.
expert reply by:
Jameson C
0
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