Trailer Wiring Harness Installation - 2016 Subaru Outback Wagon

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How to Install a Trailer Wiring Harness on a 2016 Subaru Outback Wagon


Speaker 1: Today on our 2017 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. And that's going to be part number 118467.So here's what our wiring's going to look like. It's going to provide us with a 4-Pole Flat Trailer Connector, and it's going to give us all the required lights to get our trailer safely down the road, such as our tail lights, turn signals, and our brake lights. Whenever we are ready to tow, we're just going to drop it out the back of the hatch and it'll be right by our trailer hitch ready to hook up. And the reason being is because our wiring is going to live on the inside of our Outback at all times. The benefit of that is that it is going to be protected from the elements and we're not going to have to worry about any kind of corrosion or anything building up on the inside of our connector.

And when we're not towing, we can simply store it right by our spare tire tools so it's nice and out of the way.As far as installation goes, it is going to be a rather simple installation because we're only going to have one connector that's already in our Outback that we're going to connect the harness to. Now the connector is a little bit difficult to get to, it's in the back hatch area, but we're only going to have to take out the four coverings and a few panels back here in order to get to it.So now that we've seen the end result of our wiring, let's show you how to get it installed. To begin an installation, we're going to need to come to the very back hatch of our Outback and we're going to need to remove all of the floor coverings in the back. So we'll pull out each panel and set it aside. Now mainly we're going to be working on the drivers side here, so we'll go ahead and pull these panels out.

We're going to pull all of our spare tools and that foam cover out as well. Now this foam piece over here on the drivers side, we're going to have two push pins that are holding it in place. One towards the back and then one farther towards the front of the vehicle. So you can take a flathead screwdriver or a trim panel tool and we're going to pop those clips out so that we can pull that foam panel out.(silence)So with those removed, we'll pull the panel out and set it aside. Now you will need to lift up and then slide it out because there is a section that goes underneath this panel on the side.So now that we've shown you how to take the left side panels out, we're going to go ahead and do that same thing on the right side.

Now we're going to have this panel at the very front of our hatch area. There's going to be a total of three push pins that are holding it in place. This time we're going to come underneath the entire panel and apply pressure pulling up so those pins will release. Now there are some in the back, but we're just going to lift up so that they'll release. And just kind of lift up and swing it out of the way so we have access to this area back here right by our tie down hook at the very front.Now if we come to this bottom section of where our carpet panel is on the side of the drivers side, we're going to lift up and we can see the wires right here that have some blue tape on it.

That's where our connector is going to be connected to. So we're going to need to cut that blue tape so that we can free up the wire. So we're just going to cut that blue tape. And we can pull it off. To make it a little bit easier to see, what we're going to do is we're going to take our tie down hook off. So we can lower the hook down and then take a flathead screwdriver or a trim panel tool and we're going to pop the plastic section back and down so that it's out of the way, which will expose a 10 mm head bolt that's holding it in place. So we'll grab a 10 mm socket and pull it out. And then remove the tie down hook assembly and set it aside. And then we'll have a lot more room to pull that panel away.Now where we originally cut that blue tape at the bottom, there's going to be another section right about right here where it's tape again, right where our connector is. So we're either going to have to pull this panel back and reach up and cut that tape. Or if we can, reach in from the tie down hook point and grab our connector.So with the bottom where we cut our tape, we can just grab the loop section and pull our connector out and this is going to be the connector that we're looking for. So we can grab our 4-Pole harness and we're going to take the end that's going to match our plug and plug it in, making sure that it locks in place. Now we can just start routing all the wiring back underneath that panel going toward the back of our vehicle. Now our converter box, there really isn't a good area to zip tie it to anything because it's just going to be behind this panel. So what we can do is we can take some tape or something and we can lift this panel back a little bit and tape it directly to the fender on the metal section behind the panel.So I have some double sided tape that I had laying around. And it doesn't come in the kit, but we're going to be using that to stick our converter box securely so it's not rattling around. And again, you can use whatever you have available, whether it be just regular tape, electrical tape, anything that's just going to hold it in place. We're going to take our converter box, put it underneath the panel, we're going to reach back until we can find a nice flat area and just tape it directly to there. So now it'll be behind our panel and it won't interfere with our foam pieces and we can start putting everything back together.So we can put our tie down hook back. Just going to push that panel out of the way. Loosely start our bolt by hand and then come back and tighten it all the way up. Just going to rotate our panel back in place, just make sure that we push down firmly to get all those clips to go back in.Now we're just going to want to make sure that we route our wire behind the panel so it's not going to interfere with the placement, and then we can put our push pins back in place. Going to put our floor coverings back in with all of our spare tools. We can just store our 4-Pole underneath the foam right here and put our carpet panels back.And then whenever we do need to tow, we can simply grab our 4-Pole wiring, drop it out the back hatch. The biggest thing here is you want to make sure you stay away from the latch itself. And the weatherstripping will provide enough cushion that it won't damage the wire.So one last step we have is to test our wiring. So I'm going to plug in my 4-Pole tester. And if you need one of these, you can pick one up here at etrailer.com using part number I26. So I'm going to go ahead and run the lights and verify that they're all working properly. So if I turn my headlights on, we can see that those are working properly as well as the left turn signal, right turn signal, and the brakes. So now all we have left to do is hook up to our trailer and hit the road.And that'll finish up your look at the Tekonsha T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector. Part number 118467 on our 2016 Subaru Outback Wagon.


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Info for this part was:

Test Fit:
Joe V
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Zack K
Video by:
Andrew K
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Joshua S
Test Fit:
Nicholas E
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Jacob T
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Rick A
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Andrew L
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Kathleen M
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Dustin K
Installed by:
Cole B
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Alan C
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Randy B
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Chris R
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Jared G
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Zach D
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Brent H
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Shane H
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