Parts Needed to Add 7-Way and Brake Controller to 2007 Ford F-150 with 4-Way

Updated 06/02/2017 | Published 06/01/2017

Products Featured in This Question

Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In

(281)

$13.44

Curt Discovery NEXT Trailer Brake Controller - Up to 4 Axles - Time Delayed

(76)

$113.95

Question:

Good afternoon Jameson, Thank you very much for the quick detailed response. I do have one more question for you. In your response you stated I should get part# 3035-P. I have a Curt Discovery brake controller is this a good controller? already installed, will this Tekonsha adapter work with it?

asked by: Nick

Helpful Expert Reply:

If your trailer does not have brakes all you would need is the part # 37185 as an adapter to convert the 4-way to a 7-way.

If you do have trailer brakes you would need the # 3035-P, the # 37185, and a brake controller.

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 set up.

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.

expert reply by: Jameson C

click to enlarge

Nick

6/1/2017

Jameson C.

6/2/2017

The Curt Discover # C51120 is a decent controller. It is a time-delayed controller that puts a preset amount of braking power to your trailer brakes that ramps up over time. It won't be as accurate as a proportional controller but it will get the job down. The correct Curt harness needed for your truck would be the part # C51322.