Curt T-Connector Vehicle Wiring Harness Installation - 2017 Ford Explorer

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How to Install the Curt T-Connector Vehicle Wiring Harness on a 2017 Ford Explorer

Today on our 2017 Ford Explorer, we're going to be taking a look at, and showing you how to install, the CURT T-Connector Vehicle Wiring Harness with the Seven-Way Trailer Connector, part number C56306.Here's what our wiring is going to look like once we have it installed. Our wiring is going to provide us with a seven-way RV cell connector, so we'll have all of our lights, like our turn signals, brake lights, tail lights and our reverse lights, as well as a 12 volt power source and the ability to add in a brake controller if we want to. This is going to have a spring-loaded door to keep all that dirt and debris out of the connector and keep them clean.The nice thing about our wiring is that it is going to be custom fit for our Explorer. We're not going to have to cut or splice anything. It's going to simply plug in line with an existing connector. Our kit is going to have plenty of wire to reach just about anywhere on the back here where you want to mount your seven-way close to your hitch.

It is going to have protective wire loom all the way going from the plugs to the connector here.Keep in mind, you are going to have to wire the socket up. It's not going to come pre-wired. Now that we've gone over the features and seen what our wiring looks like, let's show you how to get it installed.To begin your installation, you're going to want to mount the bracket that your seven-way is going to be connecting to. Now, our hitch had a spot to mount the bracket onto. However, if yours doesn't, you can pick up a short bracket or a long bracket to extend it out more.

If we move to the passenger side, just behind the wheel well here, underneath the bumper, we're going to have two large plugs. We're going to want to work with the black plug.You'll see there's going to be a small tab on there. You're going to want to push in on that tab and release the connector. If you're having a little bit of trouble, you can take a flathead screwdriver or a small screwdriver and just push in on that tab. Hopefully, it'll release it.

You're going to want to separate these two plugs, and then we can grab our wiring harness.Now on our wiring harness, you'll notice that the plugs are going to match up to the ones on our Explorer. I'm going to take a little bit of dielectric grease, I'm going to fill each one of these plugs up. That's just going to help any kind of corrosion from building up and keep moisture out. Now, if you need some dielectric grease, you can pick some up here at Just going to plug them in line, make sure they lock into place.Now, you're going to want to take the free end with the several wires.

You're going to want to route it along the back end of the hitch here, so we can have it coming out by our bracket. Use some zip ties to tie the excess wire to the back of the hitch.Now that we have the wire brought over, I'm going to leave all this excess out for now until we get the plug wired up. We can grab the socket end of our plug. We're going to have several different screws that are on there. At the very back, there will be one that's close to this white plastic piece. We're going to want to loosen that. You don't have to fully take it out, but you want to loosen it up so that we can get all the wires to come through.Then, we're going to have two screws on either side of the plug. We are going to want to completely take those out. Just be careful because these are really easy to drop and lose. With the one screw in the back loosened and the two removed, we'll take our wires. We're going to feed it into the back of that white section, just going to push on it and you might hear a click. That's going to be the center section coming out. We want to feed our wires all the way through until they're coming out, and we can get access to them out here.You may have to move the wire loom, or you might be able to squeeze it in. You want to have enough room for the wires to come out, so we can make the connections. Once you have the wires coming through the plug, we can grab the socket here. On the back, each terminal is going to be labeled. We can just pick one and start with it. We'll start with the black wire, going to be number four, labeled black. We're going to take a Phillips head, loosen up that terminal. Again, you don't want to take it completely off. You just want to loosen it up enough, so that little gate will open up.The wires are going to be pre-stripped. You just pull the little bit of insulation that's left on there off. However, I'm going to pull back just a little bit more because there's not a whole lot of bare wire on there. We'll take our wire, we're just going to slide it into the terminal. You want to try to get all your wires nice and neat, so they're not going to crossover and cause any connection problems. I always like to leave just a little bit sticking out, so we don't have to worry about having a bad connection.Then, we'll just tighten up the set screw. Make sure our wire is secure, and then we're going to go around and repeat that for each one of the other terminals. Just follow the corresponding color, and tighten everything up. Once you have all your wires connected, this is what it should look like. It's not a bad idea to put a little bit of dielectric grease inside the back of the connector as well. This will help keep out moisture and corrosion from building up.Next, we can open up the door. We're going to pull on the wires, so it'll bring the connector back in place. Now, it is only going to go in one way. You're going to have to turn it until it matches up, and the prongs on the inside go to the correct spot. You can see, it has those little relief cuts in it. Just want to line those up until we can get the plug all the way back in, and we can put our two screws in place.Then, we can tighten down the one screw that we loosened up. This is really just going to be like a little gate that's going to close down on that bundle of wires to keep them from pulling at the back. You don't want to go too tight with this. You just want to have enough pressure to where it's not going to cause any kind of pulling at the back of the plug. For a little bit more protection, I'm going to cover the back of this with some electrical tape, and then wrap the loom in it to help hold it in place.Then, we can feed our plug into our bracket and the holes in our plug are going to line up with the bracket. We'll take the hardware from our bracket. We'll push our screw through. Then, we'll secure on the back using a locking nut. I'm going to use a flat blade screwdriver and tighten down the screws while I just use my finger to hold the nut on the back. Just going to tie up any excess wire behind the hitch, so it's out of the way and won't interfere with anything.I went ahead and plugged in my seven-way tester. That way, we can check all the functions. You can see that my clearance lights are working as well as the left and the right turn signal, the brakes and even my reverse lights. All we have left to do now is hook up to our trailer and hit the road.That'll finish up your look at the CURT T-Connector Vehicle Wiring Harness with Seven-Way Trailer Connector, part number C56306, on our 2017 Ford Explorer.

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Info for this part was:

Video Edited:
Joshua S
Installed by:
Cole B
Video by:
Jonathan Y
Test Fit:
Robert C

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