Tekonsha T-One Vehicle Wiring Harness Installation - 2019 Subaru Outback Wagon

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How to Install the Tekonsha T-One Vehicle Wiring Harness on a 2019 Subaru Outback Wagon


Today in our 2019 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 with 4-Pole Flat Trailer Connector.Here's what our wiring's going to look like once we have it installed. It is designed to stay on the inside of the vehicle until we're ready to use it.Once we want to, we simply drop it out the rear hatch, making sure that we stay away from the latch mechanism. We can go ahead and shut the hatch, and the weather stripping here is going to provide enough cushion that it won't damage the wire. As you can see, we'll have plenty of wire to hook up to our trailer.Our wiring's going to give us a 4-Pole flat trailer connector, and all the lights we need to get down the road safely, like our tail light signals, turn signals, and our brake lights.Our wiring does have a converter box, so it's going to take the signal from our Subaru and convert it into a working signal for our trailer. But it's also going to protect our car from any kind of back beating or any problems that may arise from the trailer end.As far as installation goes, our wiring's going to be extremely straightforward. We're not going to have to cut, splice or tap into our vehicle's wiring at all.

We're simply just going to have a factory connector on the driver's side, on the inside panel, that we'll have to plug in. Then, we can run our wire to the back.Now that we've seen what our wiring looks like at the end result, we've gone over some of the features, let's show you how to get it installed.For the foam panel that's underneath, we're going to need to pull that out as well. You want to grab a flat-head screwdriver or a trim panel tool, and we'll have a couple pushpins that are holding it in place. You want to come underneath and pry up until that pushpin comes out.We can pull out the foam, set it aside.With that foam piece removed, we can now see, if we come up just a little bit from our spare tire, we'll have the rear shock mount right here. If we move forward just a little bit to right where this threshold play is, our connector is going to be behind the carpeted area, on the side of this panel.Now, it's going to be nearly impossible for me to show you where it is, but the connector's going to be taped up behind this panel.

So, we're going to need to reach in behind the panel and pull that connector down.On the driver's side, we're going to have this tie-down hook. If we pull the hook out, and we reach in, may need a screwdriver or something, but if you reach in there, you can actually pop the cover down as well. It'll expose a bolt. We can grab a 10-millimeter and we can pull that out. We can remove the tie-down hook.

It'll make it a little bit easier so we can possibly see inside, looking for our wire, and so that we might even be able to reach in from right here to get the connector to come down to the bottom.If we pull on this panel just a little bit, you can see that blue tape back there. That's right where our connector is going to be taped to that other wire. So if we can, we can reach in, rip the tape, and pull the connector down.Here's what the connector looks like once you have it pulled out. Blue tape that was holding it in place, and just goes underneath the panel. So with the connector out, and we have access to it now, we can go ahead and put our tie-down hook back in place, tighten up that 10-millimeter bolt.We can grab our wiring harness now.

We'll match up the connectors, and plug it in until it locks into place. You want to double check that the fuse is in the fuse holder, put the lid back on, because we're actually going to be running this towards the back and tucking all the wires behind this panel here. We can start putting all the foam pieces back in place.Whenever you're routing your wire towards the back, you want to make sure you stay underneath that foam panel, and you get it back as far as you can. That way we can drop it out the back hatch and have plenty of room to hook up when we hook up our trailer.Before we put all of our panels back, I want to make sure that our wiring is going to work. So, when I'm plugged in my 4-pole tester, and if you need one of these, you can pick one up here at e-trailer.com, using part number I26. Now, I'll go ahead and run the lights and verify that they're all working properly.If I turn my headlights on, we can see that my taillight circuit is working, as well as the left turn signal, the right turn signal, and the 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 T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector on our 2019 Subaru Outback Wagon.


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