7-Way Trailer Connector for 2013 Jeep Wrangler Unlimited Towing Boat Trailer With Hydraulic Brakes

Question:

Hello, Have the factory Tow Package with 4 pin with the addition of your custom fit 7 way will I be able to use a 7 way to 5 way flat adapter an the brake release system on my boat will work in reverse ?

asked by: Gus A

Helpful Expert Reply:

Although your Wrangler Unlimited has the plug under the rear of the vehicle that allows the # HM42190 to plug in, because your vehicle was not factory equipped with the 7-way not all of the functions might be active.

You can use a circuit tester like part # PTW2993 to test the center pin on the 7-way once it is installed. If it is active, the pin should show power when the transmission is shifted into reverse. If it does, using a 7-way to 5-pin adapter like part # A75TB would work fine for you.

If the center pin on the 7-way is NOT active, you would need to manually tap a wire into the reverse light circuit of your Wrangler and tap it into the wire feeding the center pin of the 7-way, which according to Hopkins, is the purple wire. Locating the reverse light circuit would be fairly simple. Locate the wiring harness feeding the taillights and use a circuit tester to probe each wire in the harness until you find the wire that illuminates the tester while the vehicle is in reverse.

Once the center pin of the 7-way is active, it will activate the reverse lock-out solenoid of the hydraulic brake actuator of your boat trailer, if it is so equipped.

expert reply by: Mike L