Tekonsha T-One Vehicle Wiring Harness Installation - 2019 Honda CR-V

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How to Install the Tekonsha T-One Vehicle Wiring Harness on a 2019 Honda CR-V


Today on our 2019 Honda CRV, we're going to be taking a look at and showing you how to install the Tekonsha T1 vehicle wiring harness with a 4-pole flat trailer connector.So here's what our wiring's going to look like once we have it installed, and it's going to provide us with a 4-pole flat trailer connector so we have all the required lights to get down the road safely like our tail lights, brake lights, and our turn signals. Now whenever we're not towing, our wiring is designed to stay on the inside of our CRV. We can simply lift open the hatch and we can store it right down by our spare tire. This will keep it out of the elements and we can make sure that we're not going to have corrosion buildup on our connector. And whenever we do need to use it, we can simply drop it out the back hatch so long as we stay away from the latch mechanism, the weatherstripping will provide enough cushion to where it won't damage our wire.Now, our wiring is custom designed for our CRV. We're not going to have to cut or splice into any factory wiring at all and in fact there is simply just going to be one connector that we're going to plug in behind this panel on the inside to get it working.

Now the installation, our wiring is very straight forward. However, there is a little bit of space constraints. It is very tight back here to get in there. So you just want to make sure you take your time and you don't damage any of the interior panels. But now that we've seen the end result of our wiring, let's show you how to get it installed.To begin our installation, we want to open up our rear hatch and we're going to remove any floor coverings that are in the back and we'll put all of them aside.

Then we'll come to the back threshold. This center section towards the inside is removable, so we'll just pop this cover out, set it aside, and then for the main piece of our threshold we're just going to start at the bottom and lift straight up, which will release the clips. We'll just work our way across until we can pull the panel out and set it aside.On the driver's side we'll have this tie down hook. It's going to be just inside our cargo area. We're going to want to rotate the hook towards about halfway open and we'll notice that there's going to be a very small little white plastic clip on the inside of the bezel here.

We're going to want to grab a small screwdriver and we'll find that white clip. You want to press up on the clip with a screwdriver and then at the same time pull outward on the hook. And then we can pull it out. The clips a little hard to see, but again, you just want to take your screwdriver, go in the center of it, press upward, and pull out and we can remove the hook.Now we're gonna move to our upper panel here. We're going to use a plastic trim panel tool and the main goal here is to pull the upper panel and the lower panel away far enough so we can get access to some wires back here.

So let's come behind our panel and I use my trim panel tool to kind of work my way going up to release those clips. Once we have it broke free a little bit, we can grab the panel with our hands and we should be able to pull it away.Okay, now once we have the panel pull back some we're going to be looking in the upper area and we're going to look for a connector that's going to match the one our new harness. To give ourselves a little bit more room, I'm going to come to this upper header panel here. I'm going to pull that down as well that way we don't have to worry about fighting this upper piece here. So just grab it on top and we're gonna pull straight down until we can remove it and set it aside.So if we pull our panel back, we can see that there's gonna be a white plug with some tape on it. Right above that, we'll have a factory ground point. We're going to get access to both of these spots, so we're going to pull a few more things off so we have a little bit more room to work behind the panel. So if we move just forward inside the panel here, we'll have the seat release on this lever. At the top, there's me a little notch. We'll take a screwdriver. We're going to push down on that notch. We'll take a screwdriver and we'll push down on that notch and it'll pop out the cover and expose two screws that are holding it in place. We'll grab a Phillips head screwdriver or Phillips bit and remove those two screws. And with those two screws removed, that'll give us a little bit more slack so that the panel can get pulled away.I'm going to take a knife and carefully cut the tape that's holding the connector in place. You just want to make sure you don't cut the wires on there. So free our connector, now we can grab our harness and plug it in. So we'll take our plug wind it up so we can plug it into the factory harness there. Now, you may hear a click. You just want to give it a quick pull and tug to make sure that it is locked in place.Now real close to the plug, we're going to have this white wire with a ring terminal. That's going to be our ground wire. Now we do have that factory ground so we can take a 10mm socket and remove the bolt, slide our ring terminal over it, and reinstall it. Now, I'm using a 1/4" drive with a short socket to break the bolt loose, because there is a very limited amount of space inside of here. Once you have the bolt removed, we'll grab our ring terminal, put the bolt through it, and you should make sure you put all the factory grounds back in places as well. Get it started by hand and then we'll tighten them the rest of the way up.And with the panel is still loose, we're gonna need to mount our converter box. Now, we get a couple of different options. We can use the eyelid on top. And the included zip ties, zip tied to some wiring. Or we can take the double sided foam tape and secure it directly to the surface. So we'll take the backing off one side of my tape, stick it directly to my converter box. I'm going to remove the backing off the other side. I'm just going to pull my panel back a little bit and if we look inside right here, we'll have a little recessed area where our box can sit completely out of the way. So we'll just tuck our box in there. Push it firmly against the side so it sticks in. And you just want to tuck your excess wire away from any points that it's going to be clipping in.We can take our 4-pole wire now. I'm going to put most of it in the spare tire area and I'm just going to wrap my wire down behind this panel, making sure that it comes out easily at the bottom so we can still get access to it. Now we can start putting all of our panels back in place at the rear hatch here.And the last step is going to be putting a fuse in place to activate our factory tow package. So we'll come to our fuse panel. It's going to be in the front seat towards the outside on the driver's side. So you'll notice that we have three rows of fuses. We're going to be working on this top row here. Now, ours already has in place. It's going to be the third one from the end, that blue 15 amp fuse. Now, if yours already has one in there, you're good to go. But if not, we can take the included 15 amp fuse from our kit and put it in place.Now that everything's back in place, we're going to test our wires to make sure that all the functions are working properly. We went ahead and hooked up our 4-pole tester and if you need one, you can pick one up here etrailer.com using part number I26. We can see that my tail light function is working properly, as well it was the left turn signal, the right turn signal, and my brakes. 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 Tekonsha T1 vehicle wiring harness with a four pole flat trailer connector on our 2017 Honda CRV.


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Info for this part was:

Installed by:
Jeff D
Video Edited:
Joshua S
Video Edited:
Jacob T
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Chris R
Video by:
Joshua S
Video by:
Kathleen M
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Jonathan Y
Test Fit:
Randy B
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Brent H
Test Fit:
Robert C

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