Trailer Brake Controller Installation - 2008 Ford F-150

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How to Install a Trailer Brake Controller on a 2008 Ford F-150


Today on our 2008 Ford F150, we'll be installing the Tekonsha Prodigy P3 Brake Controller with a direct-fit wiring, part numbers 90195 and direct-fit wiring harness, part number 3035P. Now to begin our install, we'll first need to locate the manufacturer's brake controller tow port. This will be the gray plug taped to the main wiring harness near the ALDL diagnostic port. Pull it down off the harness to gain easier access to it. Next, we'll take our direct-fit wiring harness, plug directly into the manufacturer's port. Now with the wire connected, we'll go ahead and take some black electrical tape and wrap up the exposed end of our wiring harness to clean up our install look. With that done, we're now ready to mount the brake controller bracket. We'll mount it directly to the knee bolster below and to the right of the steering wheel for easy access from the driver's position.

We'll use the hardware provided with the brake controller install kit to secure it. We'll take the brake controller pigtail and plug directly into the back of the brake controller. As you can see, once we plug in, we have power to our brake controller. Now, we'll go ahead and mount the brake controller to the brake controller bracket. We'll use the hardware provided with the install kit. We'll go ahead and secure the excess wiring up underneath the dash and out of the way.

We'll just use a couple of zip ties to do it. We'll cut off the excess from the zip ties to clean up our install look. Now, we'll go ahead and test the brake controller. From the main screen, we'll plug in our trailer connector, and you'll see the display will change showing our connection. Then, we can use the hand sweep to test the trailer brake controller. As we sweep the brake controller hand knob, you can see the numbers go up.

Then when we disconnect our trailer, you can see that the display will show no connection. There you have it for the Tekonsha Prodigy 3P Brake Controller, part number 90195, and our direct-fit wiring harness, part number 3035P, for our 2008 Ford F150. .


Questions and Comments about this Video

Claudio N.

Can electric brakes be submerged in a boat trailer?

Etrailer Expert
Reply from Jon G.

They can, just remember to unplug your trailer electrical prior to backing the trailer into the water. Electric brakes are actually becoming more and more common on boat trailers because they are easier to maintain and much more cost-effective.