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  1. Custom Fit Vehicle Wiring
  2. Tekonsha
  3. Custom Fit
  4. Trailer Hitch Wiring
  5. 4 Flat
  6. Powered Converter
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

Item # 118467
Our Price: $44.94
You Save: 27%
Custom Fit Vehicle Wiring

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Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring - no cutting, splicing or tapping required. 1-800-940-8924 to order Tekonsha custom fit vehicle wiring part number 118467 or order online at Free expert support on all Tekonsha products. Great prices and Fastest Shipping for T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
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Tekonsha Custom Fit Vehicle Wiring - 118467

  • Custom Fit
  • Trailer Hitch Wiring
  • 4 Flat
  • Powered Converter
  • Tekonsha

Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring - no cutting, splicing or tapping required.


  • Provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights
    • Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately)
  • Connects quickly and easily - no cutting, splicing or tapping
    • Locate connection point in rear cargo area
    • Plug in connector
  • Includes ModuLite to ensure that your vehicle's wiring matches that of your trailer
  • Protective connection terminals resist corrosion
  • Comes with dust cap for 4-way flat connector
  • 10-Amp mini fuse included


  • Maximum amperage:
    • Stop/turn lights: 2.1 amps per circuit
    • Tail lights: 5.6 amps per circuit
  • 1-Year limited warranty


This custom-fit T-One 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. You will need to remove some interior paneling 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 flat 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 plug on your automobile and the 4-pole connector itself - to help prevent corrosion.

ModuLite Tail Light Converter

A ModuLite power module is built into this T-One 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 your trailer. This power module functions as a tail light converter to combine 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.

T-One Installation on Subaru Forester and Outback Wagon with OEM Backup Sensors

118467 Tow Ready T-1 T-Connector - 4 Wire - Modu-Lite

Installation Details 118467 Installation instructions

This Product Fits The Following Vehicles

California residents: click here

Customer Satisfaction Score:

Customer Reviews

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118467

Average Customer Rating:  4.8 out of 5 stars   (2580 Customer Reviews)

Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring - no cutting, splicing or tapping required.


Excellent product as usual from etrailer. This is probably the third wiring adapter I’ve brought from etrailer & they’re always plug & play. The only thing that varies is where the connector is located in the vehicle. Luckily Subaru places them in an easy to reach location. Out new 2022 Outback was the easiest yet. The instructions say to “Store the 4-Flat connector in the spare tire compartment when not in use”. I don’t like the idea of it being closed in the tailgate when in use so I run it through an oval I cut in the spare tire well using a grommet and silicone sealant to ensure it says water tight. The extra wiring is secured to the back side of the bumper and just enough lead hanging out to connect to my utility trailer.



It’s been a year now and it still works like a charm with NO issues

2016 Subaru Outback Wagon

Installing this was SO EASY. I am not an electrician or a mechanic and have never modified any car before, but watching the installation video on the website was super helpful and I pretty much couldn't have done it without the video! I installed this in 30 minutes. I bet a person could do it even faster than that if they were more experienced than I am!

2018 Subaru Forester

well haven't put it in yet but the video tells me it should not be hard. I know i did the trailer hitch for my subaru forester that went easy.





Love the "no-drill" installation and the fact you can only see the 2" receiver. very clean look unlike other products I see out there. Tow my ATV, boat, trailer, etc with no worries. The trailer connector was an easy plug-in to my vehicle's electrical connection. Videos made the install pretty easy

2018 Subaru Outback Wagon

Everything delivered as ordered with easy installation instructions, and working perfectly. The etrailer website was very helpful in selecting what hardware was needed. A bit disappointed the Curt wireless controller doesn’t seat more securely in the 7- way, but the provided safety strap should keep it in place. Would definitely recommend etrailer and will use it again.



Controller works perfectly when in place. I do now use zip ties to hold it securely in 7-way, which is inconvenient but manageable. Would recommend product to anyone, with that caveat.


Installed pretty well, hardest part was trimming a portion of the bumper for clearance. Only thing i noticed was the hitch inside the receiver has a tad bit of room to move with a trailer being pulled causing noise from the gap. I may try wrapping the hitch with tape to take the gap up. It may be because the hitch sits low on the bumper which causes this not exactly the hitch's design...overall a good hitch system. vehicle connector works great and plugged in easily


Good price, easy to install and works great. My favorite part is the low exposure of the knob as opposed to banging your knee on other brake controllers.

2018 Subaru Forester

Perfect Fit, Great Install Instructions and Fair Price. . . what more could you want. They do their best to package but . . . Fortunately nothing damaged

Subaru XV Crosstrek

Fit and utility are perfect! Installed on a 2023 Subaru Crosstrek and mates to a dual ebike rack.


The hitch fit perfectly as did the wiring harness. Hitch install wasn’t as smooth as the video since the video was a 2019 Outback and mine is 2013. I figured it out anyway. Got hung up when I cut out 4” x 4 1/2” fascia per instructions. On the 2013, 4” x 5 1/2-6” is required. The 8 main bolts that hold the hitch and bumper beam were pretty rusty since my Outback is so old. Thank goodness for PB Blaster and 1/2” breaker bar. Not etrailer’s fault but UPS delivered it 2 days later than promised causing wasted good weather and having to finish install in a cold rain. When installing the harness, I couldn’t get by with slotted screwdriver. I had to go buy a trim tool. Advance Auto gouged me $xx for it. It’s basically a split screwdriver. Also the included double sided mounting tape was not included. Fortunately, I had some on hand. Overall, highly recommend. Customer service rep was very knowledgeable and helpful.


Class iii Draw Tite trailer hitch:

part was quick and easy to order and I received it sooner than expected. My mechanic said the installation was easily accomplished and looks great on my car. I would not hesitate to order from etrailer again!

Griff M.


I had the Tekonsha wiring harness installed by my mechanic and, as far as I know, there were no problems with the installation. The harness has worked perfectly since then.


Good quality product, arrived without a scratch or dent… The directions were clear and concise. For someone who doesn’t do bodywork as a profession, the hitch and trailer wiring were easy enough to install.


All items arrived on time and were well packed and as stated. Will update progress after installation. Thanks for the videos, Justin’s suggestions and timely delivery!



Top shelf! Was simple and straightforward to attach. Fittings were located as stated. And it works very well!


Install was smooth and easy. Everything fit better than I thought it would. I did the install in a dirt driveway without jacking up the car and the only issue I ran into was that laying on rocks is not comfortable. Hint for everyone - look up the install for your model year on youtube becaue Subaru changed the location of the trailer plug-in. I did substitute the washers that came in the package with a thicker, wider washer for more surface area.

2012 Subaru Forester

Product was easy to install with the correct connector to fit my subaru. And it has been performing quite well for almost a year now.



has been doing fine for yet another year


Hitch came in great shape! Got the car apart the fist time and the hardware was wrong??. I called customer service and they shipped me the right one very quickly. Hitch went on easily with minor issues. The trailer harness was literally a plug in job works perfect. On the Subaru wilderness I was able to use a straight hitch. Over all very pleased.

Subaru Outback Wagon

Easy to install on 2023 Suburu Outback. Wire is plenty long to connect to trailer. Video from eTrailer on YouTube very helpful.


I've had my wiring kit for a year and towed religiously with it. Never any issues highly recommend!

2013 Subaru Outback Wagon

So far so good! Installation was such a breeze - 5 mins max. Have not had a chance to test it yet. Will update once done. Installed on Subaru Outback 2013



After a few tows, can say theres no problem, and works like a charm


After a year with product, I can happily share that it's been great! The install was all plug and play. Most people run the wires out the trunk door but I cut a slit in a plug in the trunk, I had plenty of length to run it through there and it looks great. The other awesome part of this product is that I hooked up to a trailer that back fed into the car, the fuse in this wiring harness blew before feeding into the car, saving me who knows how much trouble. 10/10 would recommend this product



After a year of nearly daily use, I can say this product has been amazing! I only had one incident where the trailer had bad wiring and was back feeding into the car. The accessory fuse provided with this wiring kit blew and protected the cars computer. A $0.60 fuse was all it took to make things good again.

2018 Subaru Forester

Install was easy and according to the instruction and online video. Cable from the vehicle connection should have been longer. As installed, the fuse is behind a panel that requires removal of two panels and removal of a bolt to access the holder. Should be accessible without tools when in use.

Lane I.


Works as it should, no problems so far.

Subaru Outback Wagon

Just as advertised. The installation videos are SO helpful! Wiring harness installed on my Subaru Outback & works great.


Other than a tight fit to protect from water this wiring harness performs perfectli


Had a defective harness, all light functions worked except trailer lights. Turn signals and brake lights worked. Instead of sending back I just bypassed the wiring box and ran the wire direct and all is working fine. Seems like some quality control issues or I just was unfortunate to get a bad harness.

Subaru XV Crosstrek

Exactly what I needed for our '21 Crosstrek. Straightforward installation; plugged into the existing Crosstrek trailer connector and works great! It has a nice long lead for connecting to trailer. The etrailer installation video was a big help.

Show More Reviews

See what our Experts say about this Tekonsha Custom Fit Vehicle Wiring

  • Installation Instructions for Wiring T-One Wiring Harness # 118467 on a 2010 Subaru Forester
    Your 2010 Subaru Forester has a connector on the drivers side of the vehicle underneath the cargo floor hatch and drivers side and center floor trays. Once you have these items removed you will see the connector on the left near the back of the wheel well (see instructions). You will then plug the vehicle side of the wiring harness, item # 118467, in here and mount the converter box out of the way. Once this is done you only need to route the trailer connector and reinstall the vehicle...
    view full answer...
  • Tip for Finding Harness to Install Trailer Wiring on 2015 Subaru Outback Wagon
    Thanks for the tip! We normally only post questions and answers in this section but the info you gave is very helpful so we definitely want it to be accessible to our customers! "I removed the luggage tie down fitting by the wheel arch, which provided a hole to see through as well as allowing the side panel lining to spring out from the side so that I could get my hand in. Sure enough the harness plug was there secured with a small piece of blue tape. I then was able to make the connection,...
    view full answer...
  • Finding Trailer Wiring Install Connector for 2020 Subaru Outback for Tekonsha Trailer Wiring
    Sounds like you did find it. We've heard the trailer wiring harness the 2020 Subaru Outback has for installing the # 118467 can be buried a bit and that you have to reach pretty far back to get it so based on what you described you have found it. I attached an install video link to this page that shows how we found it on a similar 2019 Outback. Here's text from a review we got from a customer detailing their experience finding the harness as well: "The only problem I had was in "finding"...
    view full answer...
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  • Trailer Wiring Recommendation for a 2015 Subaru XV Crosstrek
    For trailer wiring for your 2015 Subaru XV Crosstrek you would want the Tow Ready Harness part # 118467. This will plug in the port at the rear of your vehicle and would not require running a power wire up to the vehicle battery like the "powered" units do. A powered unit wiring harness means that it runs a wire up to the battery of the vehicle so that all of the amperage drawn for the trailer taillights comes from the battery and not the vehicle wiring. This type of harness is used on...
    view full answer...
  • Where Does a Trailer Wiring Harness Plug Into on a 2014 Subaru Outback
    Subaru can put the factory connector in different locations on the same year vehicle. The only reason I can think of for them to do this is that different assembly plants have the line set up slightly different and on some models in is on the passenger's side, others it is on the driver's side, and still others it is located up at the front of the vehicle behind the passenger's side kick panel. Also please note that none of the harnesses will fit if your 2014 Outback is a Sport model.
    view full answer...
  • How to Route Tekonsha Trailer Wiring Harness for Mounting on 2019 Subaru Outback Wagon
    The Tekonsha T-One Vehicle Wiring Harness # 118467 is actually designed so that the harness wiring and connector just gets stored inside the rear cargo area when it's not in use. Then when it's time to hook up to a trailer you will just pull the 4-Way out and close the hatch door on the wiring (this will not damage the wiring in any way). I know this sounds kind of weird but this is very common and in a lot of ways better than keeping it mounted to the hitch or bumper, as it keeps the...
    view full answer...
  • Wiring for 2018 Subaru Outback Wagon with Rear Bumper Sensors
    To install the T-One Vehicle Wiring Harness # 118467 in your 2018 Subaru Outback Wagon with backup sensors there is a certain way you are going to need to plug it in (please see accompanying photo) but apart from that, there is nothing special you will need to do. The harness in the Outback can be tricky to find, so I do recommend watching the linked video of this harness being installed on a '18 Outback Wagon.
    view full answer...
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  • Factory Connection Point to Install Trailer Wiring on a 2014 Subaru Forester
    Yes. While there are common places for the factory connections, every so often there are a few vehicles that have it in a different place. Subaru is actually notorious for this. The first place you are going to want to look is forward or rearward of where the connection is supposed to be. If not located there, it may be on the other side of the vehicle. So you would basically follow the same instructions except on the opposite side of the vehicle. In some instances the location was found...
    view full answer...
  • Where to Find Plug for Installing Trailer Wiring on a 2016 Subaru Outback Wagon
    To see exactly where the port is for the install of the Tow Ready Harness part # 118467 check out the install video I attached. It sounds like you have found the correct area by your mention of the blue wire that should be holding the harness to the body of the vehicle. We have heard from customers with similar Outbacks that this harness is still hard to find even with the videos and install instructions as guides. We had one customer say they had to use a mirror and flashlight to help...
    view full answer...
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  • Recommended Trailer Wiring Harness for 2018 Subaru Outback Wagon
    I recommend the Tekonsha T-One Vehicle Wiring Harness # 118467 for your 2018 Subaru Outback Wagon (as long as it's not the Sport model) because of its superior reliability and converter box mounting design that simply leads to a longer lifespan than the alternative option. This custom harness will plug right into a factory port located behind the driver side trim panel on your vehicle (see attached image) to provide you with a 4-Way connector to connect with and power the trailer's signal...
    view full answer...
    Image 1 for
  • Can Tow Ready Trailer Wiring Harness be Used on a 2013 Subaru Outback with a Backup Camera
    The only exclusion for trailer wiring harness # 118467 is that it will not fit Sport models of the 2013 Subaru Outback Wagon. Installation of the harness should not affect the operation of the camera nor should the camera have any effect on the wiring harness. All 2013 Subaru Outbacks will have the factory connection point. Sometimes, though, Subaru likes to move it around so it may not be in the exact spot the harness instructions indicate. If it is not then other places to look or forward...
    view full answer...
  • Plug and Play Trailer Wiring Harness for a 2013 Subaru Outback 2.5 Premium
    It sounds like the shop installed a hardwire harness with a powered converter that would require a direct connection to the vehicle battery. Harness # 118467 does not require a connection to the battery because the power wire is part of the factory wiring this harness plugs into. The wire you are talking about under the car should have been secured with loom clamps, or even zip ties. Perhaps this shop needs to take a look at the FAQ article I wrote which I have linked to the right on different...
    view full answer...
  • T-1 Connector from 2006 Subaru Forester Not Compatible with 2010 Model
    The T-1 Wiring Harness you currently have, part # 118461 is for the 1998-2008 model years only. Unfortunately, Subaru changed the connector that the T-1 plugs into beginning with the 2009 model year. For your 2010 Forester, you would need part # 118467.
    view full answer...
  • Recommended Trailer Wiring Harness for 2019 Subaru Crosstrek
    For your 2019 Subaru Crosstrek I highly recommend the Tekonsha T-One Vehicle Wiring Harness # 118467, which will plug right into the factory port that's either located behind the driver's-side trim panel or in the spare tire compartment in the rear cargo area. I like the Tekonsha harnesses because they use a superior converter box that's known for its durability and long lifespan. This will provide you with a fully-functional 4-Way connector to power the basic signal lights on your trailer....
    view full answer...
  • Where To Plug In Wiring Harness on 2017 Subaru Outback Wagon That Has OEM Backup Sensors
    The diagram is trying to show that if your 2017 Subaru Outback Wagon has OEM backup sensors then they will be plugged into the vehicle wiring harness plug that you would normally plug the Tekonsha wiring harness part # 118467 into. If you find the vehicle wiring harness and realize that it's already occupied by the backup sensor harness then follow the backup sensor harness up behind the trim of the vehicle in the cargo area like shown on the photo. The other side of the backup sensor...
    view full answer...
    Image 1 for
  • Where Does 4-Way of Trailer Wiring Kit # 118467 Store When Not in Use
    Actually when the 4-way connector of the trailer wiring harness part # 118467 isn't in use it is stowed in the rear cargo rear of the vehicle which keeps it out of harms way. Having the 4-way run out of the back hatch is actually the preferred method although it seems like it wouldn't be. Having the 4-way stored inside the cab of the vehicle keeps it protected from rain and moisture to prevent corrosion and keeps it protected from damage to the wiring or connector by rocks or debris that...
    view full answer...
  • Location of Factory Plug on 2018 Subaru Outback Wagon to Install Trailer Wiring Harness
    The Tekonsha T-One Vehicle Wiring Harness # 118467 referenced in your question (great choice) will install by plugging into a white factory plug that is located in the rear cargo area around the spare tire compartment (see attached image). You will need to remove some interior paneling to access the harness. I have attached an installation video on the 2018 Outback Wagon that you can also use for reference.
    view full answer...
    Image 1 for
  • Tips for Finding Trailer Wiring Install Harness for 2017 Subaru Outback
    I attached an install video that shows the trailer wiring harness part # 118467 installed on a 2017 Subaru Outback like what you have. In it you can see exactly where to find the harness on your vehicle. There are several panels that need to come out and you will need to reach pretty far to find it in some cases.
    view full answer...
  • Where to Find Connector for Installing Trailer Wiring in a 2016 Subaru Outback Wagon
    We have heard that the connector needed to use for trailer wiring in your 2016 Subaru Outback can be difficult to find. One customer came back and said that if you use a mirror and a flashlight you will have a much easier time finding it behind the interior panel. Here's what one customer told us about locating it in a similar 2017 Outback: "On the 2017 Subaru Outback, it is behind the trim panel on the driver's side just in front of the rear wheel well. I found it very close to where...
    view full answer...
    It sounds like the converter box is not stopping the power coming from the vehicle to the trailer. I suggest checking your trailer wiring on any of the trailers you have connected wiring to before you pull them again. Bad trailer wiring is typically what will cause the malfunction. A wiring problem on one of the trailers has likely caused the converter box to short out. The converter box did what it was supposed to do by preventing back feed to the vehicle wiring. The short has allowed...
    view full answer...
  • Location Of Trailer Wiring Harness Connector On A 2023 Subaru Outback Wagon
    When installing a trailer wiring connector on your 2023 Subaru Outback Wagon I recommend The T-One Vehicle Wiring Harness # 118467 because it has a stronger power converter box over the other wiring options for your vehicle. The harness 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. I attached an installation video of the wiring being installed on a 2022 Subaru Outback Wagon....
    view full answer...
  • Where Does Trailer Wiring Plug In on 2018 Subaru Outback Wagon
    When installing trailer wiring into your 2018 Subaru Outback Wagon like the Tekonsha kit part # 118467 the harness is found in the rear cargo area underneath some of the panels by the wheel well on the driver side. If you check out the picture I attached you'll see where. I also attached a link to an install video for this kit that shows where to find it too.
    view full answer...
    Image 1 for
  • Does Installing Trailer Wiring on a 2016 Subaru Outback Wagon Require a Mounting Bracket
    When you install the # 118467 you actually store the trailer connector on the interior of the vehicle and therefore would not need the 4-way bracket part # 18144. Some people don't like the idea of this at first, but this is actually the best way to do it. Keeping the 4-way on the interior helps protect it from damage from debris on the highway and does an excellent job preventing corrosion on the pins.
    view full answer...
  • Installation of Wiring Harness in Rear Cargo Area Instead of Underneath Vehicle on Subaru Outback
    A trailer's wiring harness, like # 118467 doesn't necessarily have to be stored in the rear cargo area. However, in a lot of vehicles there isn't access out of the rear cargo to underneath. It's also better for the wiring to keep it out of the elements and in the dry cargo area for its own protection. This will help avoid any corrosion or damage from debris. The rubber strip along the rear hatch's frame will allow you to safely close the hatch while using the harness.
    view full answer...

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