Today we are working on a 2004 Ford F-150. We are going to be installing the Tekonsha Prodigy P2 brake controller, part number 90885-3035P. Our first step in installing our brake controller will be locating the plug to plug our connection into on the manufacturer side. Here, up under the dash above the brake pedal, there is a gray plug that will match up perfectly with our wiring harness. Now that… see more >