Tekonsha T-One Vehicle Wiring Harness Installation - 2020 Chrysler Pacifica

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How to Install the Tekonsha T-One Vehicle Wiring Harness on a 2020 Chrysler Pacifica


Ryan: Hello, I'm Ryan and here at etrailer, I test fit, install and review a lot of different products to help you with any questions that you might have. So today on our 2020 Chrysler Pacifica, we're going to be taking a look at and showing you how to install the Tekonsha T-One Vehicle Wiring Harness. So these Pacificas are really versatile vans and people use them to do a little bit of everything, which that does include towing. And possibly some of you may have some light up accessories like a cargo carrier, for example. And that's where our wiring is going to come into play.Not only will it power up those light up accessories, but it'll also eliminate the lights on our trailer. That way whenever we're going down the road, we'll not only be safe, but legal as well.

So our wiring is going to have a really nice, thick rubber dust cap, which you can actually use to mount it to your hitch here around these safety chain openings. But if you would prefer it to be permanently mounted or maybe give you a little cleaner look, what you can always do is pick up some brackets available here at etrailer, and actually mounted up closer to your hitch in a position somewhat similar to this.But with that being said, it's totally up to you how you want to do that. I will say the rubber dust cap does do a great job of keeping out any contaminants from entering your 4-way connector there. And that's really important because you want to keep those terminals in good shape, that way it'll work for a long time. To ensure that, I definitely recommend every now and again just applying some dielectric grease to those terminals, and that'll just really go the extra mile to keep them protected.One of the really nice things about this kit is the fact that it uses a module box.

And what that module box is going to do is protect your Chrysler's factory wiring if a short or anything like that we're to occur on the trailer side. And to me, that's important. Really gave me a lot of peace of mind, especially with today's newer vehicles. They have a lot of complicated electronic systems and you wouldn't want to do anything to jeopardize that. So because of that module box, that's something you're not going to have to worry about.Now, as far as the installation goes, it's pretty straightforward, but I'm not going to lie.

It is a little bit tedious. You just don't have a ton of room to work. So it can be a little bit challenging trying to get your wiring up into your tail light pockets. And you'll spend a little bit of time running your power wire from the back here up to the front. But as long as you take your time, you should have no issues getting the job done at home.

Speaking of which let's go ahead and hook it up together now.To begin our installation, we're going to be here at the back of our Pacifica and you're going to want to open up your hatch, that way we can remove our tail lights. So to get the tail lights out, we're going to have two fasteners and these are going to be Torx bit fasteners. So we'll grab a T30 and pull those out. Once we have them removed, you can grab your tail light, kind of work it back and forth and kind of pull towards you at the same time, and eventually it will pop out.Once you have it out, we can disconnect it. If you look right here at our electrical connector, we're going to have a red tab and you're going to just push that up. And then you're able to push down on the center of it and separate the connector. I'm simply just going to repeat this same process over on the other side. Now, in a moment where we're going to need to do is go underneath our van, loosen up a underbody panel, that way we can route our new trailer wiring up into the tail light pocket.But while we're up here to make that easier, what I've done is just taken a fish wire and pushed it through our tail light pocket, down to the underside of our van. Just used a piece of nylon air tubing. You can use a coat hanger or something like that as well. So that way it's just going to make it easier once we have our wiring there, we can connect it to our pull wire and feed it up into the tail light pocket here where we need it to be.So underneath our Pacifica, this is a location we need to get to. So I think we can get away with removing these three screws and that should allow us to flex that panel enough to get up there where we can work. So I'm going to pull those out using an eight millimeter. So with our panel kind of pushed back out of the way, I was able to grab our pull wire, which is this year. And then I grabbed our wiring harness and I took the T-connector end that has yellow and brown wires, and I simply just taped it right here to our pull wire.So now back up top, we can grab our pull wire and feed our harness up into the tail light pocket. It is a little tight in here. So you may have to kind of finesse it up into the tail light pocket. As long as you stay patient and kind of work it correctly, we will get our connector up here where we need it to be. So once we have our connector out, we can remove our tape to separate it from our pull wire, and then we can work on getting it plugged in.So the way this works is pretty simple. One end of our T-connector is going to get plugged into our factory connector there. The other end of the T-connector is simply just going to get plugged back into the tail light. These connected, I'll go ahead and reinstall our tail light the opposite way that we removed it. When you're doing this, you want to make sure to kind of feed that extra wiring down back in there, that way we don't have to worry about pinching it or anything like that.So now underneath our Pacifica, you can see, this is where everything dropped down into this location here. And what I've done is just secured our module box to the side of this piece of metal here. There's a little pre-drilled hole and I just used a zip tie just to secure that into position. With that being said, now we can focus on our white wire with the pre-attached ring terminal and that's going to be a ground wire. So we need to secure it to the body of our vehicle. Any thick metal portion should work fine.Right here above our module box is a nice and flat and thick sheet metal. So I think I'm going to put it right here in this area. I'm going to do that by using the included self-tapping Teks screw. So now we can run our green T-connector wire as well as our 4-way flat connector wire over to the center of our van and the green T-connector wire is going to go up into the passenger side tail light pocket. So I went ahead and did that and I just routed it along through here using some zip ties along the way to keep it secure.It's a little tricky to see, but relatively easy to get to. It's just simply going to follow behind our plastic bumper and over our little cover here. Our 4-way connector, I just dropped down right through the center and attach it to the safety chain openings on our hitch. The green wires is going to continue to run straight up behind here where it comes out right here. Now this area is definitely something you want to pay attention to. You want to make sure to avoid any hot or moving parts. So definitely zip tie this up as high as you can away from our tailpipe.The T-connectors here go up into the tail light pocket and I got it up there just like we did on the driver's side. I dropped down a fish wire, taped it to it and was able to pull it up into position. So here's where our green T-connector comes up into the passenger side tail light pocket. It's going to work the same as the other side. One end of it, we'll simply just plug into our factory harnesser. And the other end will go into the back of our headlight.Now we have it plugged in, we can kind of just talk her wiring down and re-install the light the opposite way that we removed it. So now we can come back to our module box and we're going to have a short black wire that comes out of it. And this is going to get connected to our big bundle of black power wire. So, first thing we're going to do, the shorter one here coming out of the module box, we're going to take our heat shrink butt connector, slide that over to the bare end of the wire and then crimp it down.So now we can grab our bundle of black power wire. And at one end of it, we need to strip back the insulation. I like to kind of twist the wires together, get them nice and tight. And then we're simply going to plug this end into the other side of our butt connector. So we'll get that in there, we need to crimp down. And since these are heat shrinks, I'll come back with my heat gun and seal up the ends. Now at this point, I went ahead and routed our power wire up to the front of our Pacifica up into the engine compartment. And this is the path that I took.This ran it along here through our hitch and it'll come out from under that panel over by our sub-frame. So if you look up here, you can see our power wire coming over our sub-frame. I'm going to just continue to route it towards the front. It comes down along through here and kind of goes underneath this panel right here. So if you kind of pull these panels down, there's a few plastic fasteners holding them in. Makes it a little easier. So here's where our wire continues and along our fuel tank there.And from this point, I'm more or less just followed these factory brake lines. So again, you're going to peel this panel down as well, you can see our power wire zip tied to those factory brake lines. Runs up right along through here, just continues forward where it comes out right through that small opening here where my finger is. And from that point, it goes up into the engine compartment. Now, the way I got it up there is very similar to how we got our wires up into our tail light pockets.So I just used them fish fire, dropped it down, taped our power wire to it and from there, I was able to pull up on our fish wire and bring it to where we need it to be. So now underneath the hood, here's where our power wire comes up into the engine compartment. I kind of just routed it along our air box and our fuse box here down through this little small opening, just to keep it nice and hidden. But with that being said, what you're going to do is strip back one end to the installation, going to take another heat, shrink butt connector, slide that over it and crimp it down.Kind of just let that hang for now. And what we're going to do is grab our included fuse holder. We want to open up the cap, make sure that the fuse is not inside, and we're going to cut that in half and strip back both ends of that insulation as well. One end of our fuse holder is going to receive a ring terminal, so that'll slide on and get that crimped down as well. The other side is simply just going to get placed into the other end of the butt connector and crimp down too.Since I have this crimped, I can grab my heat gun and come back and seal up the ends. Now what we're going to do is take our ring terminal and cut a small opening in it. Just going to cut a little bit out. And with these, I actually like to kind of pinch them together a little bit and make them a little bit smaller if that makes sense. Cut that opening out again. It's about something like that. Now, the reason I did that is because it's going to be a little bit easier to hook up to our positive battery terminal.Now, the way we're going to have to get over there is by taking off this piece of plastic here. It should just pop out, lift up on it and pull it out. And what we're able to do is lift up on our cover there. So we have a couple different options on where we can hook up. It looks like they already have some other type of accessory on this one. So what I think I'll do is maybe hook up to this post here. So I'll grab a 10 millimeter. Not going to completely remove this nut. Some of these aren't designed to come off very easily. That's why I put that split into our ring terminal.We kind of feed our wires over there. Take that ring terminal, slide it underneath the nut and just come back with our 10 and tighten it down. So now that we have it hooked up, we can come back and install our included fuse and close up that dust cover. Then what I've actually done is on our little plastic cover here, I just used a knife and cut out a little opening there, that way it won't interfere with our power wire when we close it up.Now that we have it set up, we can go ahead and re-install our air intake. That just slides in and gets pushed into place. Now it's a good idea to test our wiring to make sure that it's functioning properly. So I'm using this little tester and you can pick one of these up here at etrailer. That being said, we'll hit our left turn signal, our right turn signal, our brake lights and our running lights. So now that we verified everything works, don't forget to re-secure your panel. And that'll finish up our look at and our installation of the Tekonsha T-One Vehicle Wiring Harness on our 2020 Chrysler Pacifica.


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