How To Connect a 5-Way Trailer Connector To a 4-Way ...
You are correct, the 5th pin on the 5-pin connector is to provide the reverse lockout feature for surge brakes on the trailer. It will have to tap into the reverse light circuit of your vehicle to operate properly. We have a part that is designed just for that purpose. It is the Tow Ready 4 Pole to 5 Pole Wiring Adapter, part # 20036. This ...
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