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

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

Item # 118561
Our Price: $64.77
You Save: 40%
Custom Fit Vehicle Wiring

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Tekonsha 4 Flat Custom Fit Vehicle Wiring - 118561
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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. Powered ModuLite reduces strain on wiring system. 1-636-306-4830 to order Tekonsha custom fit vehicle wiring part number 118561 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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  • Reviews (276)
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  • Why etrailer?

Tekonsha Custom Fit Vehicle Wiring - 118561

  • 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. 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 - no cutting or splicing of wires
    • Locate connection points in rear cargo area
    • Plug in T-connector
  • Includes ModuLite to ensure that your vehicle's wiring matches that of your trailer
    • Powered module connects directly to the battery 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 light: 2.1 amps per circuit
    • Tail lights: 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 and passenger's-side interior trim panels.

Once installation is complete, the 4-way flat connector will be stowed in an out-of-the-way location within your 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.

118561 Tow Ready T-One Vehicle Wiring Harness

Installation Details 118561 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 - 118561

Average Customer Rating:  4.8 out of 5 stars   (276 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. Powered ModuLite reduces strain on wiring system.


This product works exactly as advertised. Easy to install and one year later, I have had no problems. A great wiring harness.


the wiring harness required some patience to remove the inside panels to route.

2013 Honda CR-V

Very easy installation. Followed the video. Harness worked perfectly. I would recommend an interior panel tool. The hardest part of the job is reaasembling everything. It went fairly easily. I found that there is an order in the way you replace everything. Unfortunately, I learned it by trial and error. I would say it took about 45 minutes to an hour to complete the job.

Everything works perfectly.
Mark A - 02/20/2015


I ordered this harness for our 2014 Honda CRV in order to pull a 4ft x 4ft trailer to Ohio (700 mi) to bring home some family heirlooms. The local car shop quoted nearly $600 dollars to install the 2” receiver and light plug. Buying both through etrailer was about $450 cheaper and installed in an afternoon. I was a mechanic in military for several years so decided to do it myself. Very easy to do both projects and minimal tools required. I didn’t even get to buy new tools, I had everything at home already. They had links to online videos that made everything simple to understand. These two items have worked perfectly many times and we use the receiver for many things now like a bike rack. Win win, would recommend to anyone.

2008 Honda Odyssey

The weather and my schedule finally cooperated enough for me to install my Trailer Hitch this weekend. I actually installed mine and also I mentioned a week ago to a friend of mine about your trailer hitches and we installed one on his Honda Odyssey at the same time. We started in the morning and had both completed by noon (his van was a 2008 so we had to use a tap to clean out the treads and that took a long time).

The following is what I ordered:
1 T-one Vehicle Wiring Harness
1 Curt Led 4-way Flat Connector Tester
1 Draw-Tite Max-frame Trailer Hitch Receiver - Class III - 2

First let me thank you for your quick links to the YouTube videos. They were extremely helpful.

Wiring harness installation:
The only deviation I made from the instructions/video was to route the 4-way Flat Connector out through an existing slot in the lower trim panel rather than sandwich it between the lower panel and the metal frame. If fit through without any issues and I felt it would cause a little less stress and wear and tear on the wires.

I am so very glad I ordered the tester so that I could check to make sure I had everything connected correctly before re-installing the lower and upper trim panels. FYI - The technician in the video re-installing the trim panels must be a Trim Panel Installer - LEVEL EXPERT!! :)


Harness has been great. No issues after a year of a lot of use.

Another year gone by and harness is still looking and functioning great.
Christopher - 11/03/2022

2013 Honda CR-V

I ordered a hitch and the wiring harness on a Monday afternoon. The U.P.S. man delivered two days later on Wednesday at 3-30pm and I had both items installed by 6-30pm.
Quality of both items is first class. Customer service offered by e trailer was just exceptional. Overall a great purchasing experience.
The videos provided for installation are a great help. I watched them a couple of times before I even ordered the products and they certainly help fill in the blanks left in the written instructions.
The comments written by other customers were also invaluable.
I too left the rear panel in place on my CRV and cut the opening leaving a "hinge" at the rear of the car. Just pull it down, slip the hitch into place and replace flap.
I am in my mid seventies so used a floor jack to support the hitch when installing bolts. No problem installing both items on my own.
One minor issue,,,,,,the name plate on the hitch is not installed level!! Other than that small issue, I would highly recommend both products. The product supplier is to be highly commended for the way in which it deals with customers, just superb..

2013 Honda CR-V

I installed the DrawTite hitch in about 45 minutes without any problems. The next day I did the wiring and it was very easy. Once the panels in my 2013 Honda CRV were pulled open, the wiring harness just plugs right in and then the panels are snapped back into place. The wiring took about 35 minutes. Easy installation on the hitch and the wiring. Thanks so much.


Product is fine, works as advertised.

The installation directions and video MAY be incorrect for your Honda. Both show the blue connector that you attach the tee to as next to a black box behind the left, lower wall panel above the spare tire. Honda does NOT install the connector in the same place in all CRVs. On my '16 CRV, the blue connector was NOT there (see photo and compare to instructions/video). Instead, it was in the tan panel above the panel E-trailer says, directly under the rear-most driver's-side window. You still need to pop out the panel E-trailer directs to then pop out the panel above it, so your time is not wasted.


This trailer hitch wiring harness is excellent. The directions for installation were easy to follow, especially with the video. It installed fairly quickly except for my own mistake of dropping one of the panel clips and spending time looking for it. The harness works great and tucks away nicely under the spare tire cover when not in use.

Excellent, still love the product.
Sue - 08/02/2021

2013 Honda CR-V

This receiver hitch is outstanding! I watched the video online and then used the instructions to complete the installation. Since this was my 2nd installation I took my time. No problems...I also installed the wiring kit and everything went smooth, the hitch and wiring both work great!
Thank you for providing a superior product at a fair price.. rm


As always, it installed without a hitch!


I was very pleased with the instructions everything was easy to install


It was a breeze to put together. First class connections! Can't wait to hook up my son's trailer. Surprise! He doesn't know that a Honda CR-V can pull a trailer.

Working good! It was easy install. The price was right too!
Myrna E - 11/17/2021


Clear instructions and easy to install We watched installation video and that helped as well. Used the free shipping and I received the hitch and lighting kit in 2 days! Amazing!


This is working great. Service and shipping was as stated. Overall great service


1st Trailer owner not sure of everything to get. Very helpful!


Great video


Excellent product. Fits my 2012 Honda CRV perfectly.


Fit perfect!


great working with them and part arrived in a very timely manner.

2014 Honda CR-V

Great price. Fast delivery. Easy installation with provided videos!

2016 Ford Flex

I recently purchased a trailer hitch and wiring harness for my new 2016 CRV. It arrived quickly and in good shape. After watching the installation videos several times, the installation was quits simple and straight forward. For the cutout in the appearance panel, I made a template to trace using the measurements given in the instructions and cut it out without removing the panel from the car. When the hitch was completely bolted in place, I drilled matching holes (about 3 per side) in the cutout piece and the panel still in place and "laced" them together using small cable ties to cover the opening and then sprayed the spot with Flex Seal to complete the job. Installing the wiring harness was just as shown in the videos. What a difference from the days of identifying wires and splicing them together!

Everything has worked perfectly!
Larry T - 11/27/2017

2014 Honda CR-V

I purchased the T-one Vehicle Wiring Harness from Etrailer about a week ago. Shipping was extremely fast, it arrived on the 3rd day after purchase. Installation was an absolute snap, anyone can do it and you do not need any special tools; took me about 30 minutes total. Watch the video. I left the video on play during installation which helped a lot. This is a modular plug-in and use wiring harness, no need to cut, splice, tape, etc. A high quality product you will not be disappointed with. Great price from Etrailer, too !

I have used the wiring harness several times since installation a year ago. Ive had no problems what so ever and it works great !
David H - 07/21/2015

Ford Edge

The draw tight hitch and the t one harness install was just as discribed,high quality and easy install made way easier after watching the videos .your site is the best place to get a hitch and accessories for sure , best price by far. The only thing I did different from hitch install video was not drop the plastic splash shield just cut it the same and leave one side ( the driver side edge ) not cut . Like a flap whe done I put it back in place and put little holes in the plastic and secured it with nylon ties . Thanks for a quick delivery.

Show More Reviews

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

  • Recommended Trailer Wiring Harness for 2015 Honda CR-V
    I am not sure what model wiring harness you previously installed on your 2008 Mazda 6, so I cannot confirm whether or not it will work on your 2015 Honda CR-V. If it was a universal, hardwire kit, then most likely it is compatible but I cannot be sure. With that being said, we do have a few custom-fit wiring harnesses available for your 2015 Honda CR-V that will allow for a much easier installation. I recommend the Tekonsha T-One Vehicle Wiring Harness # 118561. This harness is designed...
    view full answer...
  • Trailer Wiring Harness Recommendation for 2014 Honda CR-V
    For trailer wiring for your 2014 Honda CR-V we have the part # 118561 which is a custom fit harness specifically for your vehicle. Honda designed a port in your vehicle that has all of the turn signal functions present on one connector that this harness plugs directly into to provide you with a 4-way. The box does all the needed signal light converting. Without getting overly technical it basically senses when the various turn signals are applied and then puts the correct voltage on the...
    view full answer...
  • TowReady T Connector Wiring Harness Does Not Plug Into Connection on 2015 Honda CR-V
    I spoke with my contact at TowReady and he said you definitely have the correct wiring harness # 118561 for you 2015 Honda CR-V. He suggested that the connector you are looking for is probably located higher than you are looking in the quarter panel. You will want to look up near the window for a light blue plug.
    view full answer...
  • Trailer Wiring Harness on 2015 Honda CR-V Blew 7.5 Amp Fuse
    The fuse likely blew because either there was a short on the trailer wiring somewhere or the lights on the trailer draw more than 7.5 amps. The first things to check are the vehicle and trailer side connectors. Make sure each is free of dirt and corrosion. On the trailer side inspect the wiring from the connector all the way to each light. Fix any broken or pinched wires. Also inspect the ground locations for the lights to make sure they are clean and free of corrosion as well. If the...
    view full answer...
  • Where is the Factory Wiring Harness on the Honda 2014 CR-V EX
    The factory harness on your 2014 Honda CR-V will be located behind the left cargo panel in the rear of your vehicle. You will have to remove some interior panels to gain access to the factory harness. I have included a photo for you showing the location of the factory harness as well as a trailer wiring harness installation video for a 2013 Honda CR-V which you may find helpful.
    view full answer...
    Image 1 for
  • Installation of Tow-Ready T-One Wiring Harness # 118561 in 2014 Honda CR-V
    Thank you for your recent purchase from etrailer. The wiring harness from TowReady that you selected, T-One Wiring Harness # 118561, is a correct fit for the Honda CR-V for model years 2012 through 2014. Although there can be minor differences between the model years in terms of cosmetic elements such as the trim panels, the wiring scheme should be the same. The factory harness on your 2014 Honda CR-V will be located on the driver's-side behind the upper left panel in the rear of your...
    view full answer...
    Image 1 for
  • Using TrailerMate Flat Towing Wiring Harness Along With T-Connector on 2014 Honda CR-V
    You can indeed use the TrailerMate # TM783120 in conjunction with your existing trailer wiring harness. Since they're not going to be used simultaneously, everything will work just fine for you. If you'd care to see some of our Flat Towing help articles, click the provided links.
    view full answer...
  • Is the Tow-Ready Wiring Harness # 118561 for 2012 Honda CR-V Plug and Play w/ No Splicing Required
    The wiring harness you referred to, part # 118561 is indeed a plug and play installation with no cutting or splicing of wires necessary. You can look over the installation instructions by clicking on the link I provided.
    view full answer...
  • Installation of the T-One Trailer Wiring Harness for a 2012 Honda CR-V
    Wiring harness # 118561 is a T-connector. This means that it plugs in line with the wiring on the vehicle. Where it plugs in there is a connector already plugged into another connector and for sake of argument, it comes in a straight line from the front to the back of the vehicle. To install this wiring harness, you unplug the vehicle connectors. One will go into the larger connector on the harness, the other to the small connector on the harness. So know you have a T. The original connection...
    view full answer...
  • How to Install the Tow Ready T-One Wiring Harness # 118561 on a 2012 Honda CR-V
    The Tow Ready T-One Wiring Harness, # 118561, does not require any splicing to install on your 2012 Honda CR-V, however, you will need to remove some trim panels to access the factory connector behind the driver side panel in the rear cargo area. Once you are behind the driver side panel you will see the white 13-pin connectors that will simply plug into the connectors on the wiring harness. Once that connection is made, you will just want to attach the ground wire to a bare, clean metal...
    view full answer...
  • What is the Purpose of the Fuses for Trailer Wiring Harness # 118561 on a 2012 Honda CR-V
    There are actually a couple of fuses that come with the trailer wiring harness # 118561. There is an in line fuse on the harness (yellow in the pictures) and there is another fuse, red. The red fuse powers the rest of the harness. In either case the fuses will blow if there is a short on the trailer. This will protect the wiring on the CR-V. The trailer wiring connects to a factory harness in the vehicle but to power it a fuse must be placed in the proper location in the fuse panel as...
    view full answer...
  • Where are the Connectors in a 2012 Honda CR-V for Installing a T-One Connector
    Check out the picture I attached that shows where it will be. It may be just out of your plain sight, but if you take your time you should be able find it. We have hear from some customers that the connector can be located near the ceiling hidden behind a cable. You might try checking there also. Yes, you will just unplug the connector and then plug connector from the # 118561 in line with the factory harness.
    view full answer...
    Image 1 for
  • Installing Tow Ready # 118561 Trailer Wiring Harness on 2013 Honda CR-V
    2012 and 2013 Honda CR-V models are both of the fourth generation of the vehicle. According to Tow Ready, the panel removal procedure for the 2013 model would very similar as that shown in the instructions for the # 118561. Tow Ready typically does not update installation instructions unless there have been major changes to the vehicle. I've linked you to an install video showing the # 118561 being installed on a 2013 Honda CR-V. To briefly summarize the procedure, you will need to remove...
    view full answer...
  • Recommendation for Trailer Wiring Harness for 2012 Honda CR-V
    According to my research, the Top Hat trailer uses a standard 4-pole trailer connector. For your 2012 Honda CR-V, I recommend the T-One Wiring Harness # 118561. It requires no splicing into the wiring system and is a solid one-piece construction. It can be used with 5-, 6-, and 7-pole adapters, and is quick and easy to install. I have provided links to the installation instructions for this item as well as a video showing its installation on your vehicle. I have also included a link...
    view full answer...
  • Will the Tow Ready T-One Wiring Harness # 118561 on a 2014 Honda CR-V Work with LED Trailer Lights
    The Tow Ready T-One Custom Fit Wiring Harness, # 118561, will work with LED trailer lights. Many trailer manufacturers are switching to LED lights because of their energy efficiency, so many wiring harnesses are being designed to work with LED lights. You may have already seen the video, but I attached the installation video on the 2013 CR-V for you to check out.
    view full answer...
  • Only Trailer Running Lights Working After Installing Trailer Wiring Harness in 2014 Honda CR-V
    With trailer wiring harness # 118561 installed in the 2014 Honda CR-V it very well could be a ground that is causing the brake and turn signal lights to not work on the trailer. Ground problems normally show up when there is more draw on a system such as when you have the running lights on and then use another function like a turn signal or brake light but can show up any time. Make sure that the vehicle side and trailer side connectors are clean and free of corrosion inside and out. The...
    view full answer...
  • Recommended Trailer Wiring Harness for 2014 Honda CR-V
    For your 2014 Honda CR-V, I recommend the Tekonsha T-One Vehicle Wiring Harness # 118561. This custom harness will install by simply plugging into factory ports in the vehicle's rear cargo area, behind the driver and passenger side interior trim panels. This will provide your CR-V with a 4-Way connector to connect with and power a trailer's basic signal lights. I have attached an installation video on your 2014 Honda CR-V that you can use for reference. Tekonsha has a great reputation...
    view full answer...
  • 2016 Honda CRV Trailer Wiring
    I've reached out to Curt on your behalf and they are unsure why you have a 20 pin connector like you do. You will need to install a new wiring system to be able to connect anything to your CRV. You can use this one # 118561 and watch the video I've included to help you with the install. Usually the factory plug is found below or above your hitch receiver. Check there to make sure you are looking at the right plug.
    view full answer...
  • Trailer Wiring Harness for 2017 Jeep Renegade Sport
    If there isn't a trailer wiring harness at the rear of your 2017 Jeep Renegade Sport you will need to install a harness like the Tekonsha kit part # 118561 which is confirmed as a fit for your vehicle. If you don't see any trailer wiring at the rear of your vehicle (most likely you would have if it was there) then you do need this kit. This will activate the trailers brake lights, blinkers, and running lights. I attached an install video and a picture of what a 4-way would look like as well.
    view full answer...
    Image 1 for
  • Trouble Finding The Connector For Curt Vehicle Wiring Harness # C56158 On 2016 Honda CR-V
    Looking at your images, that is not the connector that the Curt T-Connector Vehicle Wiring Harness # C56158 will connect to on your 2016 Honda CR-V. The connector you are needing is higher and behind the upper panel. I have included an image as well as a link to an installation video below that shows the connecter.
    view full answer...
    Image 1 for Image 2 for Image 3 for
  • Recommended Trailer Hitch for 2014 Honda CR-V
    For your 2014 Honda CR-V 2WD, I highly recommend the Draw-Tite Max-Frame Trailer Hitch Receiver # 75742. This Class III hitch is confirmed to fit your vehicle and will use existing holes in the CR-V's frame for a no-drill installation. It will provide you with a 2 inch receiver opening and has a 675 pound tongue weight capacity along with a 4,500 pound towing weight capacity. I also recommend checking the owner's manual for your vehicle for its specific capacities, as this will likely be...
    view full answer...
  • Can a Trailer with Separate Turn Signals from Stoplights be Towed by 2016 Honda CR-V
    There is a special converter, # 118158, that takes the combined circuit and separates out the signals to give you just turn signals and just brake lights on separate wires. You will install this converter on the trailer side, behind the connector. The left turn/brake goes to the yellow wire, the right turn and brake goes to the green wire. Make sure to ground the white wire. On the out put side the red wire is the brake lights only, yellow is left turn only, and green is right turn only....
    view full answer...
    Image 1 for
  • Installing the Tekonsha T-One Wiring Harness on a 2016 Honda CR-V
    The Tekonsha T-One Wiring Harness # 118561 lists in the installation instructions the tools required to install this wiring harness on your 2016 Honda CR-V. The instructions list includes: Trim Panel Remover, 10mm Socket & Ratchet or 10mm Wrench, Drill (3/32” Drill Bit), 1/4” Socket, Wire Crimpers, Wire Cutters, Philips Head Screwdriver, Test-probe. The circuit tester probe that I recommend is # 40376. This circuit tester will allow you to test each pin of the 4-way trailer after installation....
    view full answer...
  • How to Wire In LED Reflectors and Lights on a 2012 Honda CR-V Using a Trailer Wiring Harness
    The T-one wiring harness # 118561 is designed to fit a 2012 Honda CR-V and provide a 4-Way flat to tow a trailer. The converter takes the multiple signals used by the vehicle, converts them and on the output sides provides the proper signals used by trailers. The output on the 4-Way is ground, running lights, left turn and brake lights, and right turn and brake lights. Trailers used combined brake and turn signals, not combined running light and turn signals. If you connect the LED bumper...
    view full answer...

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