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Trailer Brake Controller Installation - 2011 GMC Sierra

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How to Install a Trailer Brake Controller on a 2011 GMC Sierra


Today on our 2011 GMC Sierra we'll installing Tekonsha Prodigy P3 Brake Controller, Part Number 90195. To begin our install we'll first locate the manufacturer's brake control port wiring. Here on the driver's side in front of the fuse panel taped to the manufacturer's wiring will be the brake controller wiring. Now to access the brake controller port wiring, it'll usually be taped to the manufacturer's wiring so you can simply cut it free. Ours is not, so we'll just go ahead and pull it down. Now, go ahead and straighten it out and then cut each wire to the same length stripping back the wires. Now, with the manufacturer's wiring prepared we'll go ahead and add the butt connectors as necessary.

The larger yellow butt connectors will be for the red wire with the black tracer and the dark blue wire, the blue butt connectors for the smaller wires, the white, and the light blue with the white tracer. Note in this application, the orange wire will not be used. Now we'll go ahead and bring in our brake controller pig tail wiring. This wiring harness is provided with the brake controller and will connect directly to the butt connectors. We'll start with the manufacturer's light blue wire with the white tracer and the red wire from our brake controller pig tail. This will be the brake switch signal that is active only when the brake pedal is depressed. Next, we'll go ahead and take the manufacturer's red wire with the black tracer and the black wire from our brake controller big pig tail.

This will be the power to our unit. Now, we can go ahead and match color for color, white to white, and blue to blue. Now, with all the connections made it's a good idea to wrap up this connection point with some black electrical tape. I'll also use it to help secure the bundle of wire and clean up our install look. Now, with our wires taped up we'll need to move to the brake controller mounting bracket. We'll need to mount the bracket and then the brake controller. To mount the brake we'll use the self tapping screws provided with our install kit.

We're going to mount it here just about the center console. Now, with the bracket mounted we're ready to go ahead and mount the brake controller. Note, because of the tight clearances I'm going to go ahead and take my brake control wiring harness and plug it into the back of the brake controller before I mount it. Now, we'll simply plug it into the back of the brake controller and then use the screws or hardware provided to secure the brake controller to the brake controller bracket. Next, we'll need to secure the wiring up underneath the dash. Using some black zip ties we'll go ahead and secure the wiring and then we'll cut off the excess from the zip ties to clean up our install look.

Now that we're finished here in the cabin of the vehicle, we'll move to the hood area. Here we'll need to connect two power feeds to our fuse box. The first power feed is located on the wiring harness that runs below the brake master cylinder and booster. You can see the red wires taped to the outside of the main wiring harness. We'll go ahead and cut it free and pull it up to the fuse box. Then we'll go ahead and remove the fuse box cover. You can locate the next pig tail that'll need to be connected between the fuse box and the inner fender well on the driver's side. Once again, we'll cut it free and pull it out through the open ports on the fuse box. We'll go ahead and secure the ring terminals to the ports and then we'll use some black zip ties to secure our wiring. I'll cut off the excess from the zip ties to clean up our install look and then reinstall the fuse box cover. That's it. We're ready to hit the road. That does it for the install, the Takonsha Prodigy P3 Brake Controller, Part Number 90195 on our 2011 GMC Sierra. .


Nathan G.

2/13/2019

What is the orange wire for and why dont we have to use it besides only have 4 wires to hook it up to on the P3 side?

Etrailer Expert

Heather A.

2/14/2019

You will only need 4 wires from the 2011 Gmc Sierra. The wires on the Sierra are normally the red wire on the vehicle to the black wire on the back controller. The Dark blue wire on the vehicle to the blue wire on the brake controller. The light blue or orange wire on the vehicle to the red wire on the brake controller and the white to the white wire.

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