Trailer Wiring Harness Installation - 2018 Chevrolet Traverse

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How to Install the Trailer Wiring Harness on a 2018 Chevrolet Traverse

Speaker 1: Today in our 2018 Chevrolet Traverse, we're going to be taking a look at and showing you how to install the Tekonsha T-One Vehicle Wiring Harness with 4-Pole flat trailer connector, and that's going to be part number 118761.Here's what our wiring looks like. I do want to mention that the bracket is not included in the kit, but you can pick some up on our website. Our wiring is going to provide us with a 4-Pole flat trailer connector. It's going to give us all the required lights to get down the road safely and within the law. So we can give us our tail lights, brake lights, and our turn signals.We chose to mount our wiring with this bracket, because the wiring is going to stay on the outside of the vehicle at all times, so we'll be right next to our receiver tube whenever we get ready to hook up to our trailer. Now this is a custom-designed wiring kit, so it is going to be specific for our Traverse and it is just going to plug into a factory port, which is going to be right in this general area behind the bumper.Our wiring is even going to include this nice dust cover, which is going to keep some of the moisture and the debris out, from getting inside of the connector.

Whenever we're not towing and using our wiring, our cover is still going to fit in the place and our wiring or anything else is not going to interfere with this.So now that we've seen the end result of our wiring and gone over some of the features, let's go ahead and show you how to get it installed. To begin our installation, we're gonna open up our rear hatch, and on each side of the vehicle we're going to have these two plastic plugs. They're going to be covering up some bolts that we're going to have to remove.So you're going to want to grab a flathead screwdriver or a trim panel tool, and there's a small notch at the top. Let me go ahead and put the screwdriver in, so we can pop those covers out. Then you can you grab a 7mm socket, and we're going to remove those two bolts behind those covers.

Now we're going to have those same two bolts on the other side, so we'll go ahead and repeat that process.Now, right below those bolts, towards the bottom of our bumper, we're going to have another Torx bit bolt that's holding it in place. So you're going to want to grab a T20 Torx bit and you're going to remove that as well. We are going to have that bolt on both sides, so we're going to repeat that on the other side.Now if we move underneath the vehicle, we're going to have two bolts that we're going to need to take off. If we come toward the inside, we can see that there's a metal support on the back of the bumper here. We're only going need to remove the bolts that are attached to the metal bumper support here.

We're not going to have to remove the plastic ones, because this is just attached to the plastic part of our bumper on the outside. So to remove the bolt here, are you using a T15 Torx bit, and there's going to be a total of two of them, one on each side.Now on the outer edge of our wheel well, we're going to have four Torx bolts that are holding our wheel well liner to our fascia. We're going to want to grab a T15 Torx bit and remove the four from the outer edge.With those four screws removed, we're going to focus on our trim here that goes around the wheel well. We're going to gently start pulling it away from the fascia. There's just some clips holding it in place.

We're just going to pull it far enough away, until we can gain access to a bolt that's going to be holding our fascia to our fender. We're going to grab a 7mm socket, so we can pull that bolt out. We'll go ahead and repeat that whole process on the other side as well.So you're going to want to grab an extra set of hands, and we can start to pull our fascia off. We're going to pull the wheel well trim away, so that you can get behind the bumper area here. You're just going to start pulling it away, peeling, starting at the wheel well and going towards the center. Now if you have any kind of electrical connectors, you want to make sure that you disconnect them, but on ours we don't have any, so we're going to go ahead and set this aside and make sure it doesn't get damaged.With the fascia removed, our wiring is going to be right here on the driver's side, just right above the exhaust, and we're going to have the factory connector right here. Our factory port is going to have a plug on it, so if we just pull that red tab away, that's a locking mechanism, and you can pull it out, and then we're going to push in on the black tab so we can pull the plug off.We can grab our wiring harness and before we plug it in, I want to put a small amount of dielectric grease in our connector, since it is going to be on the outside of the vehicle. Then we can plug the other end in, to our factory harness, making sure it locks into place.Now if we follow our harness down, we are going to have our ground wire with an eyelet on it, so we're going to have to find a nice spot to ground our system out. So we're actually just going to stretch it over a little bit, towards the middle of our car. We're going to take the self-tapping screw they provided in our kit. We're going to go right into the bottom of the sheet metal here.Now we're just going to take our wire, and we're going to route it right on top of our hitch, going towards the center. We can take our 4-Pole end, and we're actually going to pass it right behind the hitch so it's coming out the back. Then we can secure all the excess wire up. Just take a few of the included zip ties. We can shore our wire around the hitch and if need be, take a couple of them and tie them together, so they'll make it all the way around. Then we have our wiring. This is going to be out of the way of the exhaust. We're not going to have to worry about it getting damaged.Before we tie our wires up, we do have this bracket here that's welded to our hitch. We're going to be using that to mount our 4-Pole with a 4-Pole Mounting Bracket. Now this isn't included in the kit, but you can pick one up on So with the bracket kit, we're just going to drop down some hardware in the holes that line up, and then we can secure it down with a locking nut.Then we can we just take a Philips head screwdriver, tighten those screws up to make sure the bracket is nice and secure, and the way that's going to work is we're just going to take our 4-Pole flat end. We're just going to push it through the end of the bracket. It's going to be a press fit. Those little tabs there are going to keep it secure, so it doesn't push back through. So with our wiring secured at the bracket, we can take a few more zip ties and tie up all the excess wire, so it's out of the way and everything will look nice, tucked up out of the way.So with everything secure, we can work on putting our fascia back in place. You're going to want to make sure that when you put your fascia back on, the center is lined up right by the hatch area, and then we can work our way towards the sides, making sure it lines up as well. YOu want to make sure you put that 7mm bolt back in behind your wheel well trim before you put that back in.So the final step of our installation is going to be to test our wiring. So I got a 4-Pole tester here that we can plug in. If you need one of these you can pick one up on our website, using part number I26. I'm just going to grab an extra set of hands so they can run the lights, and I can verify that everything is working properly.You can turn on the headlights, please. Looks good. Left turn signal, right turn signal, the brakes, and if you wouldn't mind, the brakes and both turn signals, please. All right, with everything looking good, we can hook up to our trailer and hit the road.That'll finish up your look at the Tekonsha T-One Vehicle Wiring Harness, with 4-Pole flat trailer connector, part number 118761, on our 2018 Chevrolet Traverse.

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Info for this part was:

Video Edited:
Joshua S
Video Edited:
Jacob T
Installed by:
Cole B
Video by:
Jonathan Y
Test Fit:
Robert C
Test Fit:
Ryan G

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