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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 # 118741
Our Price: $45.94
You Save: 42%
Custom Fit Vehicle Wiring

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Shipping Weight: 0.88 lbs
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118741 - Custom Fit Tekonsha 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. Powered ModuLite reduces strain on wiring system. 1-800-940-8924 to order Tekonsha custom fit vehicle wiring part number 118741 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 - 118741

  • 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. Powered ModuLite reduces strain on wiring system.


  • 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
    • Locate connection point in rear cargo area
    • Plug in T-connector
  • Includes ModuLite power converter to ensure that your vehicle's wiring matches that of your trailer
    • Powered module draws power from fuse to avoid overloading vehicle's electrical system
  • Constructed of 16-gauge bonded wire
  • Comes with dust cap for 4-way flat connector


  • Maximum amperage:
    • Stop/turn lights: 5 amps per circuit
    • Tail lights: 7.5 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, behind the driver's-side interior trim panel. Once you've plugged in the T-connector, open the fuse compartment beneath the driver's-side dash. Locate the fuse position indicated in the instructions, then insert the included fuse.

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 plugs on your automobile and the 4-pole connector itself - to help prevent corrosion.

ModuLite Powered 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.

With a ModuLite, your trailer's lights will be powered without overloading your vehicle's electrical system. Because the module draws power directly from your car's battery and bypasses the electrical routes that are used by a basic wiring harness, there is virtually no draw on your tail light circuits.

118741 Tekonsha T-1 T-Connector - 4 Wire - Modu-Lite Converter Included

Installation Details 118741 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 - 118741

Average Customer Rating:  4.9 out of 5 stars   (682 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. Powered ModuLite reduces strain on wiring system.


This product installed fairly easily, and the online installation video was a great help. It's working well for us. The video didn't exactly show how to add the fuse in the fuse panel under the driver's side dash, but a little more poking around online gave me the hints I needed. I'd definitely buy this product again!


Everything as expected. Have not installed yet, but instructions look clear. Looks like a quality product.



Installation was easy and quick. If you want your Honda CR-V wired for towing, this kit is what you need.


The design of the hitch, wiring and directions were excellent. Installation time was as stated. Dropping the exhaust system on a new car was a bit of a concern but after watching the video and following the tips given it was easier than I thought.


Bought this hitch along with the wiring harness and 4-pole mounting bracket. My mechanic installed and it's been working great! Hauling well anytime needed!!

2018 Honda CR-V

Shipping was fast as always with these folks. Just got it today. I will be doing the install shortly. Not sure if this is my third or fourth hitch from them. Repeat customer. What else can I say but great people to work with. Thanks etrailer!


I installed the Draw-Tite 76128 Hitch, the 118741 wiring harness and the 18144 bracket to mount the wiring plug. You can route the plug through the hole that is provided for the factory hitch wiring (it will fit through, but it is tight) and use the bracket to clean up the install. It looks pretty sweet doing it this way.



I am still very satisfied with the installation as well as the products. They were put to use about a month ago towing a trailer from Central Vermont to Southeast Ohio. That was about 800 miles and absolutely no trouble.

2020 Honda CR-V

This was my second time purchasing trailer hitch and accessories from etrailer. Excellent price, service and the video of the installation was spot on. I would give them 6 stars if I could.


The products were great, and the service was even better. I wish I would have discovered etrailer years sooner.


Perfect fit with great instructions. very helpful and knowledgeable customer service. Would highly recommend.


Hitch is working great. Installation went well with no issues - had a mechanic do the install. The hitch fits well on my Honda CRV 2018. Flush with rear bumper so no problem with leg scrapes. Support arms are barely noticeable as they sit up close to the underside of the car.



After a year of use, the hitch looks great and has performed well. A little car wax helps keep it looking new. Have used it a few times over the year.


Super easy plug & play installation, and works great. I've been using it for over two years now, and it still works perfectly.

2022 Honda CR-V

Wiring little tough to install on Honda CRV. Watch the how to video for great instructions. When they say tight space they weren’t kidding. The hitch was a breeze. This is a great company with the best service. #3 for me from them overat least 10 years.



This product works very well. Honda didn’t make it easy to install in a CRV. But the video available was very helpful.


Great product at a great price. Only suggestion would be to have a way to connect to the trailer wiring without having it being closed on by the tailgate of my CRV. I ultimately ran the cable into my spare tire compartment and then drilled a hole out near my trailer hitch and installed a grommet. Works and looks great but I had to cut the trailer connector off the T1 harness to dress the wires through my new hole and then reconnect it. The whole e-trailer experience and products were fabulous. I have a hitch and wiring harness that are as good as the Honda hitch/harness for hundreds of dollars less.


This is my 3rs order from etrailer in 15 years, spanning 2 vehicles. They never disappoint. The install instructions that came with this were garbage, but etrailer had an amazing video (as did other sites) showing exactly how to install it. I'll keep coming back.


Very fast delivery. And it looks well b uilt.

Stacey R.


Absolutely no problems. Easy to install.


Pretty simple to install on my own and the guide was spot on. Took a little bit of pulling/pushing to get all the bolts in but it’s a nice snug fit and looks great. Year later and still looks new.


Second time I’ve bought a hitch and wiring harness, first time for 2013 CRV and now for my New 2019 CRV. I installed the hitch myself using car ramps it probably would have been easier with two people but it really is that easy if you are handy with your hands. You just need to take time with the wiring harness as the video suggests. Cost was less than 150.00 for both. My wife got an estimate for her SUV and the dealer wanted 650.00 for install. This was money well spent. Thank you etrailer.


The hitch works perfect. Instructions and hardware supplied are exactly what you need. Wiring harness is easily plugged in. I’m a do it yourself person and 68 years old and it was no problem.

Russell Q.


Works great, I have used it numerous times for long distances and no problems at all.

2019 Honda CR-V

etrailer is the best, thanks for all the vids guys! Makes the install a breeze! Much appreciated!
At the end of the Tekonsha wiring install vid it shows that the fuse was already installed on the vehicle. So sure enough, I turned my lights on and BAMB, my fuse was already installed as well.

I used a couple 2x4's to hold the panels back...


Super easy install, it's extra long. I left mine in the spare tire well and pull it out when I am towing. Keeps it clean and I have had no problems at all


Instructions and harness were spot on with no problems. I recommend this CRV application



I have had zero problems with the wire harness. Works like a champ all the time.


Great hitch, easy install. I did it by myself in my driveway on ramps in about 1 hour' and another 30 mins for the wiring


Very good service and I received the order in a reasonable time. The trailer hitch is a very easy to install and the trailer wiring harness also. Thank you and I will definitely be using your company again, 5 stars. Nelson B. Québec, Canada.


Everything showed up right. Installation on my CRV is a little more challenging than others I've done, but the videos were very helpful. I would definitely buy another hitch from and have referred people to them.


Easily installed as advertised.

Show More Reviews

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

  • Tips for Flexing Interior Panels to Install Trailer Wiring Harness on 2017 Honda CR-V
    Judging by the short sleeves and the time of year the video for the # 118741 was made (appears to be spring time based on the install pic we took of the hitch that I attached), I would say most likely somewhere in the 70 degree range. It may not be super convenient, but if you are in a cold climate you could wait to do the install till you have a warm day, or wait till after you drove the vehicle for a while with the heat on to warm up the interior panels so they'll flex a bit more.
    view full answer...
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  • 4-Way Trailer Wiring Harness Recommendation for 2018 Honda CR-V
    The Tekonsha harness part # 118741 that you referenced is a fit for the AWD and FWD versions of the 2018 Honda CR-V. I attached a link to an install video for this kit on a 2018 CR-V for you to check out as well.
    view full answer...
  • Where is Trailer Wiring Connector on 2017 Honda CR-V for Installing Trailer Wiring
    I attached an install video for the T-One trailer wiring harness part # 118741 that you referenced on a 2017 Honda CR-V just like yours for you to check out. At the 2:30 mark of the video you'll see our installer digging pretty deep into the driver side panel of the vehicle to find the connector you are looking for.
    view full answer...
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  • Recommended Trailer Wiring for 2019 Honda CR-V
    For your 2019 Honda CR-V the Tekonsha T-One Vehicle Wiring Harness # 118741 will work perfectly. This is a custom "plug-and-play" harness that features a high amp capacity for the lights and comes with Tekonsha's great reputation for manufacturing durable and reliable electrical products. To install the harness you simply need to plug it into a factory port located behind the driver's side trim panel (see attached image) and insert the included fuse beneath the driver's-side dash. This...
    view full answer...
    Image 1 for
  • Is 6-Pin Connector There to Install Wiring Harness 118741 on 2018 Honda CR-V EX-L
    The 6-pin connector is definitely in your 2018 Honda CR-V, though sometimes, finding them can be a real pain. The best advice I can give you is just to continue looking, though it's difficult to orient exactly where you should keep looking based on your photos (I believe they are oriented to the side). I believe if you keep looking up above, and follow the wire loom you will find it. The connector may in fact be completely covered in tape and not obvious to the naked eye, but it will definitely...
    view full answer...
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  • Does Trailer Wiring for 2017 Honda CRV EX Require Running Wire Up to Vehicle Battery
    The trailer wiring harness for your 2017 Honda CR-V part # 118741 will not require you to run wires up to the vehicle battery. The power source the harness needs is present at the rear of the vehicle already as it's basically pre-wired from the factory for adding trailer wiring.
    view full answer...
  • Trouble Locating Tow Package Port On 2019 Honda CR-V AWD
    The T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector part # 118741 is a great option for a 2019 Honda CR-V AWD. It is a fit for all models as the factory tow package port will be present on all models. Unfortunately, the tow package port can be difficult to locate. It's actually up a little higher than normal behind the top panel. I have attached an install video for you below as well.
    view full answer...
  • Does the T-One Vehicle Wiring Harness # 118741 Come With Instructions for a 2017 Honda CR-V
    Yes, the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118741 comes with instructions and pictures on how to properly install the harness on your 2017 Honda CR-V.
    view full answer...
  • Recommended 4-Way Flat Connector For a 2022 Honda CR-V Hybrid
    I recommend the T-One Vehicle Wiring Harness # 118741 for your 2022 Honda CR-V Hybrid. This will give you a 4-way flat connector. In my experience the Tekonsha modules have less issues than other manufacturers.
    view full answer...
  • How to Remove Panels on 2017 Honda CR-V to Install Trailer Wiring Harness
    To install the trailer wiring harness # 118741 on a 2017 Honda CR-V there is a decent amount of paneling that needs to be removed or at least released. You'll need to take out the spare tire cover and then the scuff panel. Then there is a tab behind the rear seat release handle. Once you have the tab out you'll release the clips along the edge of the driver's side wall panel. I've linked a video that shows the install for you.
    view full answer...
  • Wiring Diagram and Installation Details for Tekonsha T-One Vehicle Wiring Harness on 2017 Honda CR-V
    I have attached an image of the correct wiring installation details on the Tekonsha T-One Vehicle Wiring Harness # 118741 for a 2017 Honda CR-V. This will be installed to provide a 4-way flat trailer connector at the back of the CR-V to power the trailer's signal lights. Since the installation of this harness just involves a connector being plugged in, a wiring diagram is not available or required for proper installation.
    view full answer...
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  • Does Trailer Wiring for 2017 Honda CRV Require Additional Relay
    The trailer wiring kit part # 118741 that you referenced which is a fit for your 2017 Honda CR-V does not require any relays to install. We had the chance to install this kit on a similar 2017 Honda CR-V as yours and it did not require any additional relays. Check out the install video I attached for more info on that as well.
    view full answer...
  • How do I get the Trailer Harness Outside of My CR-V?
    The T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector item # 118741 hangs over the back bumper through the rear cargo area when it is in use. The door closing on the wires will not damage it. When its not in use you just roll it up and secure it underneath the floor in your CR-V.
    view full answer...
  • Troubleshooting Liftgate Not Functioning After Installation of 4-Way Wiring Harness on 2020 CR-V
    The first thing I would do is uninstall the # 118741 wiring harness to see if the rear hatch functions once it is removed. This will help you narrow down the problem. If this fixes the issue then I would try double checking the ground and make sure the connections are secure. If this does not fix the problem then there is an issue with the vehicle. I would again say to check the ground connections to make sure they are secure. The instructions specifically have a note to make sure all...
    view full answer...
  • Recommended Trailer Wiring Harness for 2018 Honda CR-V
    For your 2018 Honda CR-V I recommend the T-One Vehicle Wiring Harness # 118741. This custom harness will plug right into the factory port located on the driver's side interior trim panel in the rear cargo area. It has the highest amp rating available for your vehicle and Tekonsha is well known for making extremely reliable products. This will provide you with a 4-Way connector to connect with and power a trailer's basic signal lights. I have attached an installation video on the 2018...
    view full answer...
  • Help Finding Connector for Installing Trailer Wiring in 2019 Honda CR-V
    It's possible you may have found the wrong harness to plug in the Tekonsha trailer wiring harness part # 118741 into. We had the chance to install this kit in a 2019 CR-V which I attached a link to the install video for that might be helpful for you to check out. Sometimes the correct harness can be harder to find as it can be buried behind other harnesses. If you check out install video around the 5 minute mark you'll see exactly where to find the connector behind the rear interior panels.
    view full answer...
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  • Troubleshooting 4-Pin Trailer Harness for 2020 Honda CR-V
    It sounds like you may not have the correct harness and in some cases the 2020 Honda CR-V has a different harness for the AWD versus the FWD version with some manufacturers. I recommend the Tekonsha T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118741 which is compatible with either AWD or FWD versions. I've linked the page to all of the trailer wiring options. If you have one of these harnesses and have that issue, then it sounds like there is a ground connection...
    view full answer...
  • Maximum Towing Capacity of a 2018 Honda CR-V
    I took a look at the online version of the owner's manual for your 2018 Honda CR-V. Under the "Towing a Trailer" section it lists a maximum trailer weight of 1,500 pounds. This is the heaviest trailer your CR-V can safely pull. In order to tow a trailer you will need a trailer hitch, wiring harness, and ball mount. Starting with the hitch I recommend the Draw-Tite Class III Max Frame Round Tube Receiver Hitch # 76128 as it features the highest weight capacities and easiest installation...
    view full answer...
    Image 1 for
  • What Wire Harness Works With A 2020 Honda CRV Hybrid
    I recommend the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118741. It will work with your 2020 Honda CRV Hybrid all wheel drive or front wheel drive. It connects to the connection point in the rear cargo area lickety-split. It provides a ModuLite power converter to ensure that your vehicl's wiring match that of your trailer. It uses 16 gauge bonded wre and comes with a dust cap for the 4 way. I Highly recommend the Mounting Bracket 4-Pole Flat # 18144 to keep...
    view full answer...
  • Trailer Hitch That Does Not Require Fascia Trimming and Wiring Harness For A 2019 Honda CR-V
    I understand your reluctance to cut the fascia of your 2019 Honda CR-V. I recommend the Draw-Tite Class III Max-Frame Trailer Hitch Receiver part # 76128 which is the only option for the 2019 Honda CR-V that does not require fascia trimming because of where the hitch attaches to the frame. I have attached a photo and installation video for your reference. For the wiring, I recommend T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector part # 118741 which has the highest amp...
    view full answer...
  • What Is The Ground Clearance Of The Draw-Tite 76128 On A 2021 Honda CR-V?
    We have not had a chance to install the Draw-Tite Trailer Hitch Receiver # 76128 on a 2021 Honda CR-V yet, but we have installed it on a similar 2020 Honda CR-V. The measurement from the ground to the lowest point on the receiver was right at 11" as shown in the included diagram, and since your 2021 CR-V uses the same receiver it will more than likely still be the same. If you are planning on towing with your CR-V you will also need a vehicle wiring harness # 118741. I included installation...
    view full answer...
    Image 1 for
  • Installation of Draw-Tite Class II Trailer Hitch Receiver for 2017 Honda CR-V
    I've linked a video of the Draw-Tite Class II Trailer Hitch Receiver # 36597 being installed on a 2017 Honda CR-V. Unfortunately, a copy of the instructions isn't available to use yet. The wiring harness for the CR-V is # 118741 which we don't have a video for as of yet. We likely will soon. The installation is fairly simple. It plugs directly into the wiring of the CR-V behind a trim panel on the driver's side in the rear cargo area. Then after the harness is connected you'll need...
    view full answer...
  • Will Draw-Tite Trailer Hitch Interfere with Kick Sensor on 2018 Honda CR-V
    The Draw-Tite Max-Frame Trailer Hitch Receiver # 76128 referenced in your question is confirmed to fit your 2018 Honda CR-V Touring. I spoke with my contact at Draw-Tite and he stated that the hitch will work with the kick sensor below the bumper, but you may just have to kick your foot around a little more for it to activate. The "eye" of the sensor will simply be limited just a bit, but it will still work absolutely fine. This Class III hitch will use existing holes in your CR-V's frame...
    view full answer...
  • Does Draw-Tite Trailer Hitch Receiver Fit 2022 Honda CR-V
    You are 100% correct; I checked with the manufacturer, Draw-Tite, for you and verified with them that their hitch does fit the 2022 Honda CR-V (except for the Hybrid models), with the correct part number being the following: - Draw-Tite Max-Frame Trailer Hitch Receiver # 76128 The # 76128 is a very simple bolt-on installation that doesn't require any type of trimming or cutting of the fascia or bumper on your '22 CR-V. I also wanted to mention - in case you plan on doing some towing...
    view full answer...

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Info for this part was:

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