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Trailer Brake Controller Installation - 2008 Ford Explorer

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How to Install a Trailer Brake Controller on a 2008 Ford Explorer


Today, on this 2008 Ford Explorer, we're gonna install a Prodigy P2 Brake Controller part number 90885. We're also gonna be installing the ETBC7 kit or part number ETBC7 and Tow-Ready Mounting Bracket part number 118136.First, we'll take our Tow-Ready Bracket and our 7-Pole and we'll install them together. Simply using the hardware that comes with our bracket then we'll go ahead and tighten our screws down.Now we assembled our bracket mounting to our tow-ready bracket, we have the option of mounting it here on our new hitch or we're actually gonna mount it here on the manufacturer's hitch.With our bracket in place, we take our band clamp, comes with the bracket install kit.Go ahead and wrap it around the bracket and the hitch.Once you get your bracket positioned where you want it and your band in place, you can go ahead and tighten it down.Say we've got a little bit leftover here from our clamp, Im just gonna take a pair of tin snips and cut it off.Alright, with our 7-pole bracket mounted, Im gonna go ahead and install a new 7-pole and 4-pole connectors. It comes with our ETBC7 kit. Im just gonna use our provided kit for the mounting. First Ill feed my wires through the bracket.

Lets go ahead and get all four of my mounting screws in place before I tighten it down.Usually, this time we take our 4-pole from our new 7-way connector and the 4-pole from the manufacturer and plug them together. But as you can the 4-pole on the vehicle side is corroded and very dirty so what were gonna do is just actually cut the wires and then use butt connectors to make our connection. First Im gonna cut the three wires here on our 7-pole side. With the wires cut, Ill strip them back and then add the butt connectors.That done, we can now cut the wires on the vehicle side. Im gonna go ahead and strip the wires from the vehicle side.

As you can see, on the manufacturers side, we now have four wires. Not only do we have our signal wires but we also have a ground wire. We have to options here. One, we can cut our ground wire from our 7-pole and take a butt connector and connect it to or, two, we can add a butt connector to our ground wire and go ahead and ground it to the frame with our 7-pole wire. Option two is the one Im gonna choose to use which is one I feel is best for this vehicle.Alright, lets bring out all our wires up over the hitch but between the manufacturers hitch and then well connect color for color.Now, to connect my white ground wire, Im just using a piece of extra wire that we have with the butt connector on it, connecting the same way we did our signal wires.Now, what were gonna do is go ahead and take the purple and white wire from our 7-pole, feed them between the two hitches, bring my two ground wires together so we can go just to the drivers side on the spare tire directly unto the cross member.

Ill be using the self-treading bolt that came on the install kit.At this time its a good idea to go ahead and route ground your two ground wires. For this application, the manufacturers hitch is also the cross member.We can now take our gray duplex wire which holds two wires. One is gonna be directly to the battery of the vehicle and the other will go to the break control signal coming from the break controller. Im gonna go ahead and run this before we make our connection.A couple of things to note when routing your wire: stay away from the suspension and steering components as the moving components could pinch or damage the wires or excessive heat, which could damage the wire also. Now, lets go ahead and run our wire to the front of the vehicle.Alright, now that weve got our duplex wire run, we can go ahead and pull it up from underneath.

Now what Im gonna do is take my utility knife, Im actually gonna cut right along the center of the wire and peel back the sheeting. The reason were doing this is because our white wire, which is gonna become our brake controller signal, is gonna go directly into the vehicle. The black wire will end getting run to a breaker and then from the breaker to the battery.Now, on our 2008 Ford Explorer, were gonna install our Prodigy P2 Brake Controller part number 90885. First were gonna find a location for the break controller mount. Up hear under the dash is where were gonna go. So now we can go ahead and use our install screws and tighten it down.Next, we can go ahead and set our brake controller in place and see what its going to look like. If we like how it looks, we can go ahead and use our tightening screws, and tighten it down.Now we need to drill a hole to the firewall so we can send two wires through it. Our first wire is gonna be power to the brake controller thatll come from the battery and second one will be the brake signal that comes from the controller back to the new 7-pole connector.I located a suitable spot here on the firewall, several inches above the stirring shaft. We got wire we ran from our 7-pole directly through the brake controller. The black wire we run from our 7-pole, were actually gonna bring over here, cut off the extra, put a ring terminal on it so we can add it to our 40-amp breaker from out ETBC7 install kit.Before I make my connection with the wire, Im gonna go ahead and mount the breaker. Well use our self-tapping screw provided in our install kit. While were at it, were also gonna go ahead and mount the 30-amp breaker that we need for our brake controller. Ill take the left over lead that we cut off from our power supply and were just run it through our breaker so that we can run it from our breaker into our brake controller. With our wire run inside, lets go ahead and go back into the cabin of the vehicle.First, Im gonna locate my brake control signal. You see that my finger is on a gray plug. This plug also has a plug for my brake control signal. The center pin, as you can see, it only works when youre pressing the brake pedal. This is our brake pedal control signal. (beeping sound) So we need to tap our wire into this wire using a quick connector for our break control signal thatll go to our brake controller.Next we need to take our white wire and ground it. There arent a lot of suitable locations on this application to ground it underneath the dash so what Im choosing to do is add a piece of white wire. Using one of my butt connectors, Im gonna run the wire outside into the engine compartment and ground it out there.Ill just use the same access hole that we used earlier to make our brake signal connector and our power for our brake controller.Now we have two more wires to connect. We have our black for power and our blue for the brake control signal that goes back to our 7-pole connector. So Ill go ahead and cut off my white wire here thats leftover my gray duplex wire that we ran earlier. Well strip back a butt connector and make our connection.Okay. Now weve got our brake control signal setup up, we can connect our power wire.Now we can pull our extra wire through the firewall.We made our connection with the brake controller and zip tie it up all our extra wires that are loose so we have a nice clean finish to our new ETBC7 and brake controller in the cabin of the vehicle.With my ground wire and power wire run from underneath the dash to the brake controller, Im gonna go ahead and cut these two, add a ring terminal so I can make the connections.The ground wire is gonna run right here to the fender where weve got a manufacturers body ground. To make its connection and our power wire from the brake controller, will run right over here to the other breaker we mounted on the fender. Ill go ahead and put our power wire for the brake controller directly onto the breaker.The only thing we got left under the hood of the vehicle now is to make our battery connections. We can go ahead and make up our leads now although we wont make our connections until we finally complete our wiring for our 7-pole and our duplex wire at the back of the vehicle then well make our final connections at the battery.With our leads made up, we can go ahead and install them on the breakers and tighten them down. Now what were gonna do is strip back the wires from our gray duplex wire that we ran up front to our break control signal and our battery power. Our white wire will go to the blue one that goes to our 7-pole. This is our brake control signal. So brake control that comes directly from the brake controller will be supplied to the trailer. Now our black wire is our battery power comes from the battery, the breaker back here to our 7-pole connector.With all of our connections made, Im gonna take the two zip ties, some black tape, wrap up our wires and get them tucked up nice and neatly then well go back at the engine compartment and make our final connections with battery.With all the wires for our reverse lights for our trailer, this is one that does not get installed for this application.Now we can go ahead and make our batter connections directly to the battery. Go ahead and loosen up the battery terminal and spread the terminal just a little bit enough to slip in our battery lead. Ill go ahead and tighten it up back down. Ill use a zip tie just to clean up our wires here.And that completes the install of our Prodigy P2 Brake Controller part number 90885, the ETBC7 kit or part number ETBC7 and the tow-ready universal mounting bracket part number 118136 on this 2008 Ford Explorer.


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