Towing a Trailer with a 5-Way Using a Truck with 4-Way and 7-Way Connectors  

Question:

Expert Reply:

The easiest way is to use a 7-way to 5-way adapter like part # A75TB. It plugs right in and since you already have all the functions on the 7-way you don't need to make any additional wiring connections.

On the trailer side you can add a 7-way like part # A10-7W6. You can either cut off the 5-way and replace it or connect the wires together and have both a 7-way and 5-way to use whichever you need.

One final option is to use the 4-way and adapt it using part # 20036. This requires you to splice the additional wire in to the truck's reverse light circuit in order for the fifth pin to function.

expert reply by: Charles S

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