Trailer Wiring Harness Installation - 2014 Subaru Outback Wagon

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How to Install a Trailer Wiring Harness on a 2014 Subaru Outback Wagon


Today on our 2014 Subaru Outback Wagon, we'll be installing the Curt T-Connector Vehicle Wiring Harness with four pole flat connector part number C56040. To begin our install, we'll first open up the rear hatch. We'll then remove the rear cargo cover. Next, we'll go ahead and lift up on the spare tire cover and set it out of the way. We can then remove the center foam compartment and set it aside. Here in the center, carpeted and foam mold, we'll go ahead and roll the protective cover out of the way.

We'll then need to remove the back of the seat edge, which snaps in to the foam mold. Once we've popped that out, we can then remove the fasteners that hold it in place. Note there are three fasteners, two pushpin and one fastener underneath that'll get released when we get underneath the foam section. There's the one from the passenger's side. We'll repeat the same process on the driver's side.

Now we'll go ahead and get underneath the center of it to release the pushpin fastener underneath. Once we have it off, we'll go ahead and set it aside for your installation later. With the center piece out of the way, we'll now go ahead and relocate the foam compartment on the driver's side. It's also held in with a pushpin fastener. On the driver's side, near the cargo hook, underneath the carpeting will be the manufacturer's wiring and tow port. We can just see the wiring sticking out, so if we follow that up, we can locate the tow port and pull it free from the tape that's holding it.

We can then go ahead and take our new Curt T-Connector Vehicle Wiring Harness. With matching plug, plug directly into the manufacturer's tow port. Next, we'll take our white wire with a pre-attached ring terminal and pull it back towards our converter box. This will allow us to take the ring terminal and ground it here to the sheet metal where it doubles up for a good secure ground. We'll use a self-tamping screw provided with our install kit to do it now. Once we've secured our ground, we'll then go ahead and install the fuse into the fuse holder.

We'll use a ten-amp fuse that's supplied with the install kit. Next, we'll use a two-way adhesive to mount the converter box. The two-way adhesive is supplied with the install kit. We'll peel back one side and apply it to the converter box. The mounting location we're looking for is a clean, flat surface, and preferably sheet metal. Here on the driver's side, below the plastic pocket, there's a good location. We'll go ahead and tuck our wiring up underneath the carpeting and then mount the converter box. We'll then take the four-pole wiring harness and run it underneath the foam compartment towards the spare tire wheel well. Now, with everything reinstalled, now let's go ahead and show you how to use the new four-pole harness. Simply open up the spare tire cover, bring our four-pole harness out and over the threshold, being careful to say away from the latch as pinching the wire in the latch can damage it. However, the weather stripping is thick enough that we can simply close the rear hatch on the wire and then use it as necessary with our hitch or accessory. Then once we're done, we'll simply open up the rear hatch and spare tire cover and store our four-pole harness inside the vehicle. To test it, we can simply use our test light. We'll put our ground clamp on a white wire terminal, testing the next terminal over, which will be our brown wire terminal for our running light circuit. The yellow wire terminal will be the driver's side turn signal and brake. Then our green wire terminal will be the passenger's side turn signal and brake.Now that we know our new four-pole harness works, this will complete the install and we're ready to hit the road. That does it for the install of the Curt T-Connector Direct Fit Wiring Harness part number C56040 on our 2014 Subaru Outback Wagon. .


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