Adapter 4 Pole to 7 Pole Vehicle End Trailer Connector 30717 : Trailer hitch bike rack and trailer hitches

4-Way to 7-Way Trailer Wiring Adapter

Adapter converts from 4 pole wiring on vehicle to 7 pole round plug. Additional wire leads for brake, power and accessory are 12" long.

Recommended: Wiring Harness Mount Brackets

Picture of the 7-Way Trailer Connector

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Good adapter
J-S Chenard from Montreal, QC, Canada
Bought this adapter to convert from a 4-wire standard trailer plug to my Coleman pop-up camper 7-wire adapter. It works great! Just don't forget to attach the adapter's white ground wire to the vehicle frame, since the adapter does not make use of the ground return lead built into the 4-wire trailer plug. This is stated in the instructions, but easy to forget...