Parts Needed to Install Brake Controller on 2017 Ford F-150 with 4-Way
Updated 04/10/2018 | Published 04/09/2018
Question:
I want to install a trailer brake on my 2017 f150. It did not come with the tow package just the bumper and a flat 4 hook up. I found your products and watched the video on how to do the conversion to 7 pin. My question is do I need to add any fuses or relays to make this work or will it be ready to go after I install the the brake and hook up the wires.
asked by: Mark
Expert Reply:
To convert the 4-way to a 7-way on your 2017 Ford F-150 and install the brake controller would actually want the part # 37185 and the brake controller install harness part # 22292.
Follow the 4-way trailer connector wires from the trailer connector to the front of the vehicle. These wires connect to a factory plug along the frame rail, usually on the driver's side, between the back tires and the rear bumper. The factory plug should be mated to another connector which has wiring that continues back toward the bumper.
There are more wires coming from the front of the vehicle than there are coming out toward the 4-Way plug. Ford wires the front of the vehicle as if it will be manufactured with a 7-Way plug, so all the 7-Way wires are run to this connector on the frame rail. This allows a 7-Way wiring harness to simply plug in line with the wiring coming from the front of the vehicle. If the vehicle were made with a 4-Way plug, it would plug into the same connector. Because a 4-Way plug would not require them, the additional wires are terminated at the pictured set of mated connectors.
For a brake controller I would recommend the Prodigy P2 Brake Controller part # 90885. This is our best selling brake controller because of how well it works and how easy it is to setup. This is a proportional brake controller that senses the amount of braking the tow vehicle is applying and applies a proportionate amount to the trailer brakes.
