/
Hopkins/
Custom Fit/
Trailer Hitch Wiring/
4 Flat/
Powered ConverterItem # HM11143885
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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:
Specs:
This custom-fit T-connector plugs into your vehicle's wiring harness, which is located in your rear cargo area on the driver's side. You will have to remove the cargo area cover and interior trays to access this harness. Once you've plugged in the connector, insert the provided fuse into the in-line fuse holder.
Once installation is complete, the 4-way connector will be stowed in your rear cargo area.
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. This converter is a battery-powered unit that bypasses the electrical routes that are used by a basic wiring harness. As a result, there is virtually no draw on your tail light circuits.
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 
2015 - 2019 Subaru Outback Wagon
California residents: click here
Video of Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Connector
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today we're going to be taking a look at part number HM11143885. This is the Hopkins plug-in, simple vehicle wiring harness with a 4 pole connector. It's going to fit certain years and models of the Subaru Outback. It's going to provide that 4 way flat trailer connector at the back of the vehicle to power the trailer's signal lights. The plug's going to be compatible with 5 pole, 6 pole, and 7 pole adapters. The adapters are sold separately. It's going to come with a dust cap.
That way you can protect the connections points when the connecter's not being used. That wiring is going to run to a taillight converter. This is going to insure that your vehicle's wiring matches that of your trailer's. This is going to connect directly to the battery through the wiring system, to avoid overloading the vehicles electric system. Coming off this side of that taillight converter, it's going to take us directly to our fuse holder.
That's got a hole in it right there in the tab, so it can be mounted if we so choose. Open it up, and you can see that it's already going to come with the 10 amp fuse installed. That snaps shut for a nice tight, secure connection. Then the wiring is going to run all the way to the plug. This is going to be the plug that connects to the OEM wiring system. Once you have all of this out and ready to be installed, you're going to need to locate the connection point in your rear cargo area.
It's going to be located on the driver's side. Simply just take this connector, and plug it in. The plug's are going to match up perfectly. They're going to snap lock together for a nice tight, secure fit. Once you have that plugged in you're going to need to secure you're converter box.
You can do that using a couple of the zip ties that are included with the kit. It's got 2 little brackets here on the side. Run the zip ties through, get it secured in a nice, out of the way location. Securing that with the zip ties is really going to help prevent damage to the system. It's going to prevent rattling. That way you don't have to worry about any type of rattling as you're going down the road. Then you can secure all the other wiring with all the other included zip ties for a nice, tight, secure fit. As well as, overall, a pretty neat and clean installation appearance. Once you're installation is complete, the 4 way flat connector is going to be stowed in the rear cargo area. This kit includes the harness; you're going to get the 10 amp fuse, you're going to get all the zip ties that's necessary, and you're going to get a terminal grease packet. You can apply this to the plugs on the vehicle, and the 4 pole connector itself. That's going to help prevent erosion. When it comes to the maximum amperage for the stop and turn lights we're looking at 3 amps per circuit, and for the taillights we're looking at 6 amps per circuit. That's going to do it for today's look at part number HM11143885.
Average Customer Rating: 4.9 out of 5 stars (15 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.Arrived in a timely manner. After watching the helpful installation video was easy to complete in around 15 min. 573497
Installation Video was spot on. Ten minutes start to finish. Plug will be used with 306-X7266 EcoHitch Hidden Trailer Hitch Receiver - Custom Fit - Class III - 2" 524212
This seems like a high quality product. It was an absolute beast to get the factory coupler out from under the panel as seen in the video or a 2018 Subaru Outback - it is apparently taped up there and if you don't have child sized hands you can expect a lot of pain finding the coupler and pulling it out. I slightly ripped the panel doing so, but it covered up nicely when reinstalling the floor trays. 515142
Received both the hitch and electrical connections in than two days and in excellent condition. So far car say nothing but good things about etrailer and give a high recommendation. Hopefully the hitch will go on as easily as suggested. 604248
The Hopkins wiring harness is great, came on time and packaging was good. This went on my 2015 outback easily and works good. The only thing I did different from the instruction was after plugging into the cars wiring I ran the rest of the wire into the spare tire area and cut a slot in the rubber plug in the bottom and continued the connector along under the car to the trailer hitch then mounted the plug to the hitch with a bracket I made out of small angle iron bolted to the hitch. Then sealed the rubber plug around the wire with rubber cement and made sure all the slack in the wire underneath was gone so as not to catch on anything while driving. I did it this way because I didn't want to run the wire out the rear hatch door when connecting it to the trailer And it looks and works good. 484807
Mine did not come with the car connector protective cap or the grease. I think if you mentioned to take out the cargo hold down (1 -10mm bolt) you can actually see the connector and it gives you more room to get your hand in there.No blind guessing as to what you are trying to pull down. 423225
The wiring harness worked as advertised. Just reach under the rear of the left side wheel well plastic cover to find the Subaru wires taped to the metal. Plug into harness and you're good to go. Easy! 608180
The products were great and installed with no problem. What I really appreciated was the videos provided to help with the installation. Your service was great, items shipped the next day and arrived with no problems. Huge thankyou 688704
This installation could not be any easier, took me less than half an hour, the video was right on and it went together perfectly. I like the fact that the plug remains in trunk when not in use and is not exposed to the weather. I would strongly recommend this product. 663402
Rather than trying to snake your hand up blindly to locate the plug (seen beginning at 2:37 of the 2017 installation video), I STRONGLY recommend removing the the cargo tie-down. Fold the rear seat down on the driver's side, and gently flip up the carpeted cover (held down with 3 push-pins). With a flat-bladed screwdriver, gently pry the plastic inner piece of the tie-down downward to expose the 10mm bolt. After removing it, and the entire tie-down assembly, you will be able to easily see the plug through the opening. This makes it much simpler to reach in from underneath to pull down the plug. The rest of the installation can proceed as normal. 647409
Very well made. Install went very well 643018
It took awhile to find out where to plug it in to, the Forester has a different place than the Outback. I did some online research and found a youtube instruction that got me there for where it is in the Outback. 614386
Easy to install, MUST watch videos before installing. 612106
The wiring worked great. I have rather large hands, so had my wife reach up in there as instructed for my vehicle. She pulled out the connector and I finished wiring it up. Everything worked great. 593276
Installed this in my Subaru Outback. Was very straight forward, and the video on etrailer.com also made it very easy. I rate myself maybe a 7 out of 10 in handiness, so if you're the same way, you can definitely take it on. 389959
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