Hopkins Plug-In Simple Vehicle Wiring Harness Installation - 2019 Subaru Crosstrek

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How to Install a Hopkins Plug-In Simple Vehicle Wiring Harness on a 2019 Subaru Crosstrek

Today in our 2019 Subaru Crosstrek, we're going to be installing Hopkins plug-in simple vehicle wiring harness. This four-pole wiring harness is going to provide you with all the necessary lighting you need to haul your trailer. It'll give you your left turn signal, right turn signal, tail lamps and brake lamps, keeping you DOT compliant in all states. The module is pre-installed onto your harness, will protect your vehicle's circuits by shutting down any of your trailer's circuits that may have a short on them, preventing any damage to the vehicle. Located on our four-pole connector here, we have a dust cap to keep out any dirt and debris, ensuring long-lasting operation of our harness.We'll begin our installation at the back of the vehicle. You'll need to access your rear compartment, so we're going to flip this up.

We're going to go ahead and flip it up again because we're going to need to remove the spare tire. So we'll pull our tray out, unthread our spare tire, and we can pull this out. And we actually don't need to take it all the way out when we take it out. We just need access to one of the grommets underneath of it. So you can set it off to one side like this.

We'll be replacing the grommet located here on the left with the one that comes with our harness. So we can go ahead and pull that out and set it aside. And that's going to be the same, regardless of the year, make, or model you'll be installing this on.Next, we'll need to gain access to our factory tow-plug connector. On our Crosstrek, it's going to be located underneath this panel here on the driver's side. So we'll use a flat-bladed screwdriver to pop out the tabs that hold this in.

There's one on each side. And now you can just pull up on your back threshold here. I do like to lift up a little bit on the foam piece, because it doesn't lift . It kind of hangs over it, so to prevent you from accidentally breaking it, just kind of get a little bit of relief. See if you can get around that and do the same on the other side.

We'll set this aside. Our factory tow-plug connector is located here. Once you've located your factory connector, we can take our new harness and plug it into that factory connector. Simply line up your release tab with the release tab on the other one. They click together. Now you can zip-tie up your wiring to clean it up, and the module can be mounted.Now, the kit comes with zip-ties to mount your module. However, due to the length of your four-pole connector wiring, which needs to go down through this hole and then routed towards the back, you're going to have to keep this grommet pretty close to the module and keep it over in this area. So I recommend using some double-sided tape and sticking it to this paneling over here to ensure that your four-pole connector's long enough to be usable. So we're going to go ahead and route this down now before we secure it, so we can make sure that we have the appropriate length and we can set our spare tire back in before we finalize the mount.This grommet will just simply push in place and seal just like the factory one did. We pulled our four-pole connector towards the rear, make sure we've got enough. This is a pretty good length right here to ensure that we can connect it to our trailer. We can go ahead and install our dust cap on it now. This simply just slides around the connector into the slot located here. And I like to use the dust cap to secure it to the hitch, keep it up out of the way when going down the road. Alternatively, if you have a mounting bracket like our DrawTight here, you could put a four-pole bracket onto it and just install your four-pole bracket onto that bracket. So as you can see here, we put our spare tire back in place and we actually had to mount it closer to the rear of the vehicle due to not having clearance between the side wall there. In addition to the double-sided tape we used, you could run a self-tapper screw through the mounting holes at the top and bottom of the module.We can now reinstall our paneling in the reverse order that we took it off and then we're ready to test it out. So now you can plug it into your trailer to test. We've got a tester plugged in here. If you want to use a tester like this, you can pick one up at etrailer.com. You want to make sure you have your left turn signal, right turn signal, tail lamps, and brake lamps. And with everything working properly, we're ready to hit the road. And that completes our installation of Hopkins Plug-in Simple Vehicle Wiring Harness on our 2019 Subaru Crosstrek.

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Info for this part was:

Video by:
Andrew K
Video by:
Joshua S
Video Edited:
Jacob T
Video by:
Kathleen M
Video Edited:
Dustin K
Installed by:
Cole B
Test Fit:
Randy B
Video Edited:
Chris R
Test Fit:
Brent H
Test Fit:
Shane H
Video by:
Jonathan Y
Test Fit:
Robert C
Video by:
Michael B

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