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Tekonsha T-One Vehicle Wiring Harness Installation - 2020 Subaru Outback Wagon

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How to Install the Tekonsha T-One Vehicle Wiring Harness on a 2020 Subaru Outback Wagon


Ryan: Hey everybody, Ryan here at etrailer.Today on our 2020 Subaru Outback wagon, we're going to be taking a look at and showing you how to install the Tekonsha T-One Vehicle Wiring Harness. So what I really like about this setup is that your wiring isn't going to be visible or out in the elements whenever you're not using it, but it's not going to be a big hassle whenever you are ready. All you're going to have to do is open up your hatch, open up your storage compartment here, and pull your wiring out.Now, how this is going to work, is you're just going to drape it over your threshold here. Any part of the threshold is fine, with one exception. You want to do your best to avoid the latch because if the wiring gets pinched in there, it could potentially get damaged. But that being said, you'll close your hatch and then you're ready to plug into your trailer or maybe even your light up accessories.With these newer cars, the factory electronics can be really sensitive, so it's important to keep them protected.

Since this kit does use a module box, you're not going to have to worry about anything potentially getting damaged if a short or an electrical issue we're to occur on your trailer side. So I will say, I really do like the construction quality of Tekonsha. It's really well-built, all the wires are nice and thick and have good coatings on them, and even the little things, like giving me a little bit of extra wire. We have plenty of length and shouldn't have any issues plugging into our trailer or whatever else we might be.The plug here does have a nice, thick, rubber dust cap, that way, even though it is stored inside, you're not going to have to worry about any dirt or debris getting inside. If moisture does find its way into your hatch area, you're not going to have to worry about your terminals getting corroded.

I do recommend though, however, it is never a bad idea to apply some dielectric grease to the terminals from time to time, just to kind of go that extra mile. The cap, since it is built onto the plug, what you can use that for too, is to temporarily store it on your hitch. You can wrap it around your safety chain loop and plug it in. That way, say for example, if you drop a trailer and plan on picking it back up an hour or two later, you could just keep it like this, that way you don't have to open up your hatch again.Wiring is going to have a power output of 2.1 amps per circuit for your stop and turn signals, and 5.6 amps per circuit for your tail lights. So more or less, what that means, is it's going to provide us with plenty of power, whether you're using the older incandescent style bulbs or even the newer LED style.

So at the end of the day, a really clean wiring setup, that's going to be hidden whenever you're not using it, and it's just going to hang out back whenever you are ready to. Now, as far as the installation goes, it's really simple. You don't have to cut or splice in anything. It really just plugs into a factory plug right here in the back of our car. Speaking of which, let's go ahead and hook it up together now.To begin our install, we're going to be here at the back of our Subaru and we're going to need to work inside of the hatch, so we'll go ahead and open up the door.

We're going to need to remove our floor coverings, so we'll go ahead and lift this centerpiece up and out of the way. You can also grab the side panel, and then we can grab the storage department and set that off to the side as well. Over here on the passenger side, we can also remove this portion of our floor covering and set it to the side. Then if you move to the center of our Outback, we're going to have this threshold right here, and we're going to remove this too. It'll give us a lot more room to work and make life a little bit easier. To get this off, you can simply just grab one corner of it and pull up. That's going to release some of the clips that's holding it on. Once we have it removed, we can set it to the side.With the threshold out of the way, that will expose the factory connector we've been looking for. So it is kind of double backed and just taped on. What I'm going to do is just cut that tape carefully, that way we will have a little more length to work with. Like that. Now, what I'm going to do is grab our wiring. One end, we're going to have a connector plug, the other end, we're going to have a fuse holder. I'm going to take the fuse out first, then once we have everything hooked up, we'll come back and reinstall that fuse. But the connector will simply just pair up with the factory connector right here, so we'll just plug them two in.Now we need to find a spot to mount up our box. We don't have a ton of room right here, so what I think I'm going to do is try to mount it underneath this panel. To give us the space that we need, we can remove this little foam compartment here. To do that, we're going to have a push pin style fastener on each end of it, so we can take a trim panel tool or a flat-head screwdriver, pry underneath it and pop it up to release it. The same thing with this one, then we can grab our foam, slide it out of the way.Underneath the panel, now we have an opening where we can mount up our box. I'm going to Mount the box using the included two-sided sticky tape. You want to be sure though to have both surfaces clean, so I'm just going to take some rubbing alcohol and a paper towel and wipe them down. I'm going to go right back in there where it's flat. So I gave both surfaces a minute to dry, then we can take our sticky tape, peel off one side of it, push it onto our module box, peel off the other side, and then reach back in there and stick the box to the body of our vehicle. So here's what our box looks like once we have it secured in that position. We can move back to our fuse holder and reinstall the fuse. Push it down, close up the cap, and then what I'll go ahead and do, is grab some zip ties and just kind of tidy up our wiring. I'll show you how I did it once I'm done.So this is how all my wiring looks once I used a few zip ties to get it secure. After that, we can start to put stuff back, pretty much in the opposite order that we removed it. We'll set our foam in and push back down our fasteners. Threshold works the same way. We'll just line it back up and push it back down. Then we can grab our foam compartment, just lay that back to the position. What I like to do is take our 4-pole flat connector, just kind of work it around the edge, and this gives us a really good spot store that whenever we're not using it. From there, it's pretty straight forward. We'll just re-install all of our floor coverings.And that'll finish up our look at and our installation of the Tekonsha T-One Vehicle Wiring Harness on our 2020 Subaru Outback wagon.


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