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Trailer Wiring Harness Installation - 2015 Subaru Outback Wagon

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How to Install a Trailer Wiring Harness on a 2015 Subaru Outback Wagon


Today, in our 2015 Subaru Outback Wagon, we're going to be installing the Tow Ready T-One Vehicle Wiring harness with the 4-Pole Flat Trailer Connectors. Part number is 118467. We're going to start by removing our floor coverings here. There are panel here in the middle. We'll also pop up the panel here on the left side. Now, we grab in here in the middle, we can take out our jack and tools.

We'll set those aside, and then use a screwdriver, or like what we've got here, a trim removal tool. You want to go right underneath these little push pin fasteners and pop those out. There's one here and there will be one located right here. That should allow us to then pull out that side panel cover. Next, let's pop up a couple of push pin fasteners that hold down this rear panel. We'll go right underneath and then just gently pull up to separate.

We'll also pull the small little panel here. Bring this all across. We'll reach right inside our little pocket here and we'll find the connector that we're going to be using. Pull up the slat and then we're going to start popping our panel here back down into place. Now, let's grab our connector and the end of our harness. Slide it in till we hear it click then give it the push-pull to make sure everything's connected properly.

Now the connection made, let's just tuck it right back up in there. Bring our wires down so they're going to clear little bit of sharp edge. Right here, we've got a little bit of seal and a little bit of coat. That's a perfect kind of a barrier and then we just press down our push pin fasteners all the way across there. This is our little fuse holder here. If this gives us any kind of interference, we're going to push that back up underneath there too, but I like having it out to where it's accessible in case we ever need to change that fuse.

Let's take care of getting our box mounted. As you can see, we've got ideal location right there on the side. To mount it, we're going to wipe off the back of the box with a little rubbing alcohol and also our mounting surface here, then use the provided double-sided tape. Place that on the box and move it here, right there where we just got it nice and clean. Really, is you don't necessarily have to adhere that to something, but by keeping it from moving around and wiggling around, we're not going to have to deal with any noise issues. Now with our panel down here in place, you can see it's kind of holding up our padding here a little bit. What we're going to do is just notch out the back side and give it some room. That should give us more than enough room for that delay in there without any kind of interference. There we can see it's going to lay down nice and flush. We'll take the push pin fasteners that we removed earlier in the process and we'll get those pushed back in. We got our wiring right up here beside our spare then we've got our spare tire tools that will go back in place. Again, here, just a little bit of interference. You see that won't quite go down all the way, so we'll trim that as well. We'll fit it back in there and if we need to, we'll trim off a little bit more. Perfect. Fits in there nice and flush just as it did before. As you can see, when the wire comes out, it's going to come out right off that soft edge. There's plenty of room. It's not being pinched by anything. Let's put our cover on. It's going to line up the pins on that with the white inaudible 00:05:50. We'd push it right down into place. Now we'll put our hook lined up right. Got the middle panel in. Press that down. As you can see, everything fits together very well. We have our 4-pole wire that's going to come out on the side. The great thing about this is as long as we avoid the catch point right here for the latch, we won't have to worry for our wire. See it comes through there. We've got that weather striping there that give us a nice buffer area so we're not doing any damage or pinching it. The end of the day when we're done with our trailer, or bike, raft, or whatever else, we can set this aside, we'll gather up our wire, and you can be as neat or as messy with this as you like, and then we'll just bring the dust cover right around that. Slide it under our plug there and then just tuck it away for safekeeping until we need it again. With everything connected the way it should be, let's test it out and make sure everything is working. We're going to use the white wire for our ground clamp. That'll test that out to make sure we've got a good ground then we'll start with our running lights on. That should give us a constant signal from the brown wire. Now we'll have the left blinker turned on. That should give us a flashing signal from the yellow wire. Now we'll do the green wire and with the right blinker on, we should get a flashing signal from there. Three for three so far. Now, with the brakes supplied, we should have a constant signal from both the yellow and the green. We are ready to go. That's going to complete today's installation of the Tow Ready T-One Vehicle Wiring Harness with the 4-Pole Flat Trailer Connector. Part number is 118467 on our 2015 Subaru Outback Wagon. .


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Test Fit:
Joe V
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Zack K
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Joshua S
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Nicholas E
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Jacob T
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Rick A
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Kathleen M
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Cole B
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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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