/
Hopkins/
Custom Fit/
Trailer Hitch Wiring/
4 Flat/
ConverterItem # HM11143865
Retail:$86.83
Our Price: $46.72
You Save: 46%To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
Orders above $50 qualify for Free Shipping
Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring - no cutting or splicing required.
Features:
This custom-fit T-connector plugs into your vehicle's wiring harness, which is located in your rear cargo area, either behind the driver's-side trim panel or in the spare tire compartment.
Once installation is complete, the 4-way connector will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure.
It is recommended that you use a small amount of grease on all electrical connections - the plugs on your automobile and the 4-pole connector itself - to help prevent corrosion.
A tail light converter is built into this T-connector. Because most trailers run on a two-wire system - wherein the brake and turn signals are carried on one wire - the separate brake and turn signals from your vehicle's three-wire system need to be combined so they are compatible with the wiring system of the trailer. This converter combines the brake and turn signal functions of your automobile so that they run on one wire to properly activate your trailer's tail lights. Note: This will not affect how the tail lights on your vehicle operate.
Installation Details 
2018 - 2019 Subaru Crosstrek
2014 - 2020 Subaru Forester
2009 - 2020 Subaru Forester
2013 - 2019 Subaru Outback Wagon
2013 - 2014 Subaru Outback Wagon
2013 - 2013 Subaru XV Crosstrek
2013 - 2013 Subaru XV Crosstrek
2010 - 2012 Subaru Outback Wagon excluding Sport
2010 - 2012 Subaru Outback Wagon excluding Sport
2016 - 2017 Subaru Crosstrek non-Hybrid models
2016 - 2017 Subaru Crosstrek non-Hybrid models
2014 - 2015 Subaru XV Crosstrek non-Hybrid models
2014 - 2015 Subaru XV Crosstrek non-Hybrid models
California residents: click here
Video of Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
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.
Average Customer Rating: 4.9 out of 5 stars (62 Customer Reviews)
Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring - no cutting or splicing required.Easy to install. Would purchase again. 680645
I am only giving this 4 stars because of two issues. We are prepared for these issues when doing installs someone doing their first one may struggle with. The wiring connector plug in on the car did not require near as much interior removal as stated in the instructions ( It can be found without any thing other than the foam spare tire block pulled, and The hole in the body is actuall quite a bit smaller than the rubber seal provided where it exits the body and the hole in the body is to small to fit the four wire connector end to fit through without some modifications. This is not a big deal the harness was the perfect length and is a plug and play harness for the Subaru Crosstrek I would not hesitate to order this part again. 376812
I have a 2011 Subaru Forester. I asked that trailer rental place to install a hitch and trailer wiring. Took them about 3 hours to complete. I finally got around to attaching the trailer to the Forester only to find out that the way they wired it was wrong. I went online - came across this page and searched to see if there was a trailer wiring harness specific to my vehicle and if there was - how easy was it. etrailer's How-to video was dead on in helping me to find the factory trailer wiring hook up (didn’t have to pull the left rear inside panel away as the plug was laying just underneath the foam tire changing tools tray). I had the new harness I got in from etrailer today installed in about 10-15 minutes (maybe less). I plugged in my 4 Pin Flat -> 7 Pin Flat converter that I made myself, plugged in my trailer and my trailer lights came to life. I ripped the trailer rental place's trailer wiring out (seeing that they spliced directly into the tail light assembly) and tossed it. 476492
Worked as advertised. Loved the ease of installation. On line videos much better than written instructions with package. Wish it came with a better mount on the trailer connection (just loops the cover through the safety chain loops), but that is only a cosmetic and subjective issue. I can always buy a separate mount if I want. 543708
If you would like to mount the 4-way flat to the hitch I recommend bracket part # HM48595
Hopkins Fold-Over Mounting Bracket for 4-Way Flat Trailer Connector
$2.95 that comes with self tapping screws to attach directly to the bottom of the bumper.
Heather A - 07/21/2018I used this wire harness along with the knockout plug adaptor part number 47605 on my 2017 crosstrek. It is very easy to use both on my crosstrek to make a clean look. 473696
Friends: When I installed the trailer hitch I did not cut a section out of the heat shield above the muffler. Instead I drilled 5/8” holes where the bolts go through. The shield is already prepunched where it is to be drilled. I used butyl tape around the bolts to seal them and hold the bolts. For the wiring harness, I simply used Velcro to hold the unit to the inside of the spare tire well rather than tape. 492959
The DYI videos provided by etrailer.com helped me to decide on doing this project myself. While the hitch for my 2011 Subaru Forester looked easy enough to install, the thought of how to wire it correctly seemed a challenge. That is, until I watched the video for my EXACT vehicle! It was literally as easy as watching the video on my phone while I did the install myself. Everything was EXACTLY the way the video described. I was able to complete the install in less than 15 minutes from start to finish. Thanks etrailer.com for the assist! 419848
2018 Subaru Crosstrek The DYI videos provided by etrailer.com provided a quick and easy how-to. It was literally as easy as watching the video on my computer and going out and installing it in 30 minutes. I also installed Mounting Bracket 4-Pole Flat, Item # 18144 and No-Drill Mount Bracket, Short, Item # 18140 and it looks great. 538859
Wire harness for our 2016 Subaru Crosstrek worked out just as simple and nice as all information said it would. Took approximately 45 minutes to install. Plugged in and installed as if it was installed at the factory. 433436
This was the easiest hookup ever. Subaru plug pulled relatively easy. Make sure you mount the electrical interface box low enough in the wheel well that it doesn't impede proper placement of the foam insert storage tray. I didn't really need this now but likely will in the future. Costs a little more but install and through wheel well to hitch frame makes it the perfect choice and fit for my 2014 Subaru Outback. 430288
Pretty much the same comment applies a year later. Easy install, all good. Only thing is my 4 pin connector cover snapped off somehow and I need to replace it.
TonyT - 09/11/2018
I've only used it once, it worked for me, fits perfect in my 2018 Subaru Crosstrek and hides in my spare tire department when I am not using it. 730435
It has held up nicely. 715415
Excellent set up & easy installation, hooked it up on my Crosstrek 2018. Work perfect and looks good installed, hidden and out of the way. Only problem I had was to have the 4 pin plug would not fit into the additional bracket they suggested as a mounting point. 691235
The recommended 4-pole mounting bracket for your wiring harness is the Hopkins Fold-Over Mounting Bracket # HM48595
Hopkins Fold-Over Mounting Bracket for 4-Way Flat Trailer Connector
$2.95.
Victoria B - 08/23/2019Great overall experience! 688531
Great product excellent service along with the helpful video installed in under an hour. Highly recommend good job etrailer.com 682142
Arrived quickly. Product and You Tube videos made it easy to install. No reason to pay someone to do this easy install. Job completed in less than 1 hour 677790
Great product!! 678072
Wiring kit was a simple install watched the video then took my time doing the work 20 minutes later ready to tow. etrailer is my go to source for hitches and wiring kits. 670327
The Hopkins wiring pkg. for my Subaru had no replaceable fuse in the trailer wiring ; the others I’ve seen have the in line fuse and the other have a redundant ground wire that the installer has to fasten to the vehicle with a self taping screw. Hope I didn’t make a mistake buying this Hopkins product; the other Hopkins wiring and brake units work just fine. Keeping my fingers crossed. 664698
A well-thought out piece of equipment by Hopkins, and definitely worth the extra money. This was my first harness ever installed. Installed on my 2016 Subaru Forester 2.5i. I watched the video twice, and had no trouble whatsoever. The only thing you will want to measure out is the amount of cable you want in the trunk or under the car. Merely personal preference. I will most likely put some extra cable sleeve around the wires under the car up to the connector for just a little added weatherproof protection. I used the Hopkins Fold-Over Mounting for 4-way Flat Trailer Connector - #HM48595. I installed the harness today, as I write this review; so longevity will be TBD. 661192
Great Product and fast delivery 657519
This is a great product and made the wiring job super simple. The video was excellent, and in particular it explained how to get the various fasteners off to access the needed spaces. One thing to note though, when we did the installation, the video on eTrailer's site showed a 2018 Forester, and my installation was done on my wife's 2019 Forester. The wiring location is actually different between the two. So we ended up removing a couple of panels that turned out to be unnecessary. Since our install though, the etrailer video has been updated with the new 2019 wiring location, which makes the install even easier. Even with the extra panel removal it was a simple job and I recommend this product. 657499
Straight forward and simple solution to trailer wiring. Easy as snap! 656026
This adapter is the nicest one that I’ve ever installed. It was really easy to install and I love how it has the integrated rubber plug to go through the drain hole. We have used it with our lightweight utility trailer and it works perfectly. I definitely recommend it to any one with a Forester. 654081
Was a little tricky hooking up this wiring harness, but once I looked at the videos and pictures it went in fine. 652484
Installed on a 2018 Subaru crosstrek. Easy installation and very discreet when not in use. 641551
The hitch is very well built. The instructions and video were easy to follow. The hitch was easy to install, albeit a helper should assist as this is a heavy duty hitch. 625441
Made life easy Plug & Play 614737
Good product went on easily made for a nice instillation. 613880
Easy installation and works just fine 611908
I couldn't be more satisfied with my purchase. The hitch arrived promptly and in good condition. It fit my 2019 Forester perfectly and went on exactly as shown in the instructional video. It's way overbuilt for my uses (not a bad thing), a small utility trailer and a bicycle rack. As an additional item the wiring harness went in perfectly. 611112
Very easy to install !!! 607397
Quick easy install. One click and it was connected to the factory plug. No issues at all. Fast, accurate order. Will definitely order from etrailer again. 606486
All components received in good form and functioned as intended. From past experience E-trailer will always promptly make good on any defective product. 605824
Delivered in good shape. Clear instructions made installation easy. Had it on in under 2 hours. Would i order from this company again. Absolutely! 605240
Hi, the car I ordered parts for was a 2019 Subaru. Crosstrec. The wiring harness I received was for a Subaru Forester. It fit fine but the instructions were wrong and didn't apply to my car. I had to find a utube Video to complete the installation 600168
Works flawlessly 600041
Easy to install and works every time I plug the trailer lights in. Excellent! 594087
Exact fit. 591327
Excellent fit and well made. 584997
Installation was quite easy. Everything fit and snapped together. Instructions were clear. Still working fine after a year. 578911
Awesome product that works as described and very easy to install. This is my second purchase of this wiring harness and would recommend it to any one looking for one. 577039
Great bunch of guys very helpful 557267
went together quickly,great product good video 556453
Super simple install. Just like the demo video. Paid $300 to have a trailer hitch installed. Saved $150 installing the wiring harness myself. Thanks Etrailer! 552802
Just got my wiring harness yesterday in the mail. My nephew will be installing it for me on Tuesday. The same product exactly that a hitch shop was going to install and sell to me for almost 3x as much. 528607
Wiring Harness works great! Installation was quick and as described. No problems what so ever with the harness. Every tow is safe and lit perfectly. Thank you for a quality, affordable product.
Christine - 06/30/2019Helpful video made installation a breeze, thank you 519741
Instructions were not clear on the location of the vehicle plug. Added a few minutes searching. Other wise excellent. 518388
Subaru is well known for varying the location of the connector for the trailer wiring. It can even vary from vehicle to vehicle of the same model year.
-- Mike L - 06/07/2018The Hopkins Wiring Harness was delivered promptly and the installation went well. I installed the wiring harness as shown on your installation video but got concerned about routing the wires over the muffler heat shield. I rerouted the wires through the passenger side of the rear lower hatch area. The Subaru Crosstrek has a hole with a plastic plug in this location but the hole had to be enlarged with a round file to fit the rubber plug on the wiring harness. The wire rerouting is much better away from the hot muffler area, excellent product. 517274
This product is excellent. Easy to install , could not believe how easy. Thank you for a quality product for owners to add trailer lighting. 501022
Easy to install, continues to work very well. Best wiring kit I have ever installed and used
Steven - 05/02/2019Ask the Experts about this Hopkins Custom Fit Vehicle Wiring
Do you have a question about this Custom Fit Vehicle Wiring?
Do you have a question about this Custom Fit Vehicle Wiring?
At etrailer.com we guarantee:
Info for this part was:
At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.