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Trailer Brake Controller Installation - 2005 Ford F-150

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How to Install a Trailer Brake Controller on a 2005 Ford F-150

Today on our 2005 Ford F150, we'll be installing the Tekonsha Prodigy P3 Trailer Brake Controller. Part number 90195 with wiring harness, part number 3035-P. First we'll point out the connection to the factory wiring harness. Now that we've located our plug, there's normally a grey plastic cap that covers it - in this instance there's not. We'll take our new wiring harness from our new brake controller, plug it into the factory connector. With the wiring in place, we'll mount out bracket, in this case we're mounting it about halfway up the kick panel under the steering wheel. To mount it we use the two self-tapping screws that came included with out kit. Now that our bracket's in place we'll take the mounting clip for our brake controller and we'll screw that in using the included machine screws that came with the kit. Now that the brackets mounted, take our wiring harness, plug it the back of the brake controller and set our brake controller up in place.

Our final step is just to clean up the excess wire, to do so we'll just bundle it up and zip tie it. Now with the wires bundled and zip tied securely under the dash we go ahead and clip the excess zip tie - clean it up. With everything hooked up we can test the operation. Press the manual override to see that the brake's working. Then we can press the brake pedal to see that the trailer brake is sending signal. We also have our options menus and those allow us to cycle through them. That will conclude today's installation of the Tekonsha Prodigy P3 Trailer Brake Controller, part number 90195, on our 2005 Ford F150.


Keith J.


What about the back end? I have the thing hooked up but no 7 pin in the rear

Etrailer Expert

Mike L.


Here's a link that explains how to install a 7-way on your truck. Does the truck have any trailer connector at all?



The video shows the controller pointing up. I thought it had to be level, pointing in the direction of travel?

Jason S.


The self-leveling feature of the P3 # 90195 ensures that the brake controller continues to function even as you drive up steep hills or through the mountains. Simply mount it in your cab at any vertical angle, and the controller will level itself automatically thanks to its 360-degree rotational range. The product page shows how this can look, but the unit cannot be crooked side to side or front to back for that feature to work. The way it is mounted in the video will not be an issue.

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