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  1. Custom Fit Vehicle Wiring
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  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 # 118692
Our Price: $57.99
You Save: 38%
Custom Fit Vehicle Wiring

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118692 - 4 Flat 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. Powered ModuLite reduces strain on wiring system. 1-833-496-1390 to order Tekonsha custom fit vehicle wiring part number 118692 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 (18)
  • Q & A (0)
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  • Why etrailer?

Tekonsha Custom Fit Vehicle Wiring - 118692

  • 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
    • Locate connection points in rear cargo area
    • Plug in T-connector
    • Run hot lead to car battery
  • Includes ModuLite power converter to ensure that your vehicle's wiring matches that of your trailer
    • Powered module connects to 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 lights: 4.2 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 inside your rear cargo area, behind the tail lights on both the driver's side and passenger's side. You will have to remove the rear threshold and some interior lining to access this harness. Once you've plugged in the T-connector, run the hot lead up to your car battery. Connect the lead to the included fuse holder, and then connect the fuse holder to the positive terminal on your battery and insert the provided fuse.

Once installation is complete, the 4-way connector will be stowed in your spare tire compartment.

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.

118692 Tekonsha T-1 T-Connector - 4 Wire - Modu-Lite Converter Included

Installation Details 118692 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 - 118692

Average Customer Rating:  4.5 out of 5 stars   (18 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.


I installed this trailer harness on my 2020 Elantra. The instructions were easy to follow and Everything needed came in the kit. I first lift the rear of the car using my ramps and installed the wires as far forward of the vehicle as I could, I then moved the ramps to the front of the car and finished the work. It might have taken me 2 hours to complete the installation.

2019 Hyundai Elantra

The wiring harness is made to my 2019 Hyundai Elantra SE is very well made I plan to install it as soon as I can. I was going to make my own wiring for my car with this harness I don't have to.


works great. product was installed over a year ago and I have had no issues. I pull a small 4x6 trailer with my 2018 Hyundai elantra

Still working great.
Rich M - 06/26/2020


The manafacture made this wiring harness easy to install but could have done a better job on the instructions if the installer was a novice.
But if the installer was a novice and had issues with instructions the videos that etrailer has made made up for the marginal printed instructions that came with the harness.

2017 Hyundai Elantra

Ordered items arrived 4 days earlier than expected delivery date & all items were installed without issue. The installation videos on the website were fantastic to follow. Absolutely no complaints and would highly recommend this company for anyone looking to buy & install a trailer hitch. It is so nice to find a company that actually does what they say they will do :-)


Paid more for this one but sure beats stripping and punching and hoping you get a good connection. The video was helpful especially the suggestion of using cleat water plastic tube to get the wire up to the battery i usually use a wire to pull it up but just left the tube in place to protect the wire.

fred j - 01/24/2021


Ok so It's been a year since I bought/installed trailer hitch/wiring harness. I initially confirmed the electrical system by hooking up the trailer & all worked as expected. The install was much easier than I anticipated. I'm always a little concerned about routing wires thru a vehicle. The process was rather painless & very clean installation. Don't be concerned if your thinking about this DIY procedure. The directions are straight forward & customer service is a phone call away. I did call with a question & the answer came quickly.
When the need arises in the future for my next install there is no other place I'll go.


My 2010 Elantra was much easier to install. The hitch was relatively easy to install on 2018 Elantra, but wire from battery wasn't easy and it hangs down inside the wheel well. Not well designed for the 2018 Elantra. The middle bracket has nothing to attach to on the car, so the hitch is held on by 4 bolts fastened to the frame. I don't feel safe towing heavy loads (+ 1,000 lbs). Checking tightness of bolts requires removal of underbody panels. Works well for occasional light towing.


I am very happy with this purchase. No problems with ordering or receiving the product. I am impressed with the quality of the connectors and wiring. I installed the kit myself using the included written instructions and a video covering installation for my car. The kit works perfectly, I plugged in my trailer connection and the lights work great. This is my first purchase from and it has been an overall good experience.

2020 Hyundai Elantra

Works great! Figuring out how to get the interior panels apart without risking damage is a little tedious, but running the 12 volt wire back from the battery is by far the hardest part. Having access to a lift would help. But in the end, knowing that the extra amps for the trailer lights aren't going through the car's wiring is probably worth the effort. I shielded the supplied 12 volt wire with some plastic tubing for added abrasion resistance.


Worked as described. Etrailers instalation videos are great.


Pretty straight forward installation. I ran the power wire to an key controlled wire rather than a constant on wire to avoid any unless battery drain.


Was not difficult to install and always works when connected to trailers.


Not a DIY project .


2020 Hyundai Elantra




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

  • Best Trailer Wiring Harness for 2018 Hyundai Elantra With or Without LED Tail Lights
    The 2018 Hyundai Elantra Limited version is the only one with LED lights and it has the trim features of chrome door handles, heated rear seats and the 8 inch touch screen navigation system. The only thing that changes anything for the trailer wiring is the LED lighting because the wiring doesn't have the same amount of power required or supplied. If you have the LED lights, I recommend the wiring harness # 118711. If you have the incandescent bulb tail lights, I recommend the wiring...
    view full answer...
  • Recommended Hitch and Wiring for my 2019 Hyundai Elantra GT N-line?
    Yes the Draw-Tite Sportframe Trailer Hitch Receiver part # 24905 is a fit for your 2019 Hyundai Elantra N-Line. This is the only hitch compatible with the dual exhaust. If you will require wiring use the Tekonsha T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector part # 118692 this is the only harness that will not require yo to splice into your factory wiring.
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  • Trailer Hitch for 2018 Hyundai Elantra SE
    For your 2018 Hyundai Elantra SE we have the Draw Tite hitch part # 24970 which is a confirmed fit and would work great. It has only the lower hitch opening visible which allows it to be a bit more hidden. If you wanted trailer wiring the Tekonsha kit part # 118692 would be a great option as well as it's easy to install and our most reliable option.
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  • Trailer Hitch for 2016 Elantra GT Manufactured in South Korea
    I have a solution for you, but the Curt # C11400 is not going to be a confirmed fit for your 2016 Hyundai Elantra. Even though Hyundai is a South Korean car manufacturer, they do have plants in other countries. It appears that for whatever reason, the 2016 Elantra models that were produced within South Korea were not drilled with the holes that are required to mount trailer hitches on the frames of the vehicles. This is why it's proving so difficult to find a hitch that will work on your...
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  • Which Hitch Fits 2016 Hyundai Elantra GT Made in Korea
    For your 2016 Hyundai Elantra GT hatchback that was made in Korea (second letter of VIN is letter M) the Curt hitch part # C11400 is the hitch you'd need as it's the correct fit. If you were looking for trailer wiring too the Tekonsha kit part # 118692 is what I recommend as it installs very easily and also has a very reliable converter box.
    view full answer...
  • Parts Needed to Tow a Trailer with a 2013 Hyundai Elantra Gt
    The Curt # C11400 is the correct trailer hitch receiver for your 2013 Hyundai Elantra built in Korea. The # 119147KIT wiring harness you'd looked at will work, but I'd recommend the plug and play # 118692 as it'd be much easier to install. No cutting or splicing required. The Curt Drawbar # C45520 is recommended for the hitch but others will fit. I've included a link to our selection that will work for you. As well as an article to help you find the rise or drop you need to go with...
    view full answer...
  • Is There a Hitch Available to Fit a 2020 Hyundai Elantra GT N-Line
    Yes. The Draw-Tite Sportframe Trailer Hitch Receiver - Custom Fit - Class I - 1-1/4" # 24905 will fit on your 2020 Hyundai Elantra GT N-Line as long as your vehicle was NOT manufactured in South Korea; the vehicles that were manufactured in South Korea do not have holes drilled for a hitch and thus have not been tested for compatibility. You can check the door manufacture sticker or VIN to determine where your vehicle was made; VIN with the second letter M denotes Korean-built. For wiring...
    view full answer...
  • Trailer Hitch Receiver for 2018 Hyundai Elantra GT Sport
    The Draw-Tite Sportframe Trailer Hitch Receiver # 24905 is confirmed to fit all the 2018 Hyundai Elantra GT trim levels, unless the car was manufactured in Korea. You can verify this by inspecting the build sticker in the door jamb or if the 2nd letter in your VIN is a M. You are correct that the 1st post was made before the hitch was produced and the 2nd post at a later date as there is now a hitch available. The Draw-Tite Drawbar for 1-1/4" Hitches # 3594 is recommended if you will...
    view full answer...
  • Recommended Trailer Hitch And Wiring Harness For 2017 Hyundai Elantra SE Sedan
    Looks like you are wanting a trailer hitch and a wiring harness for your 2017 Hyundai Elantra. We offer one trailer hitch for your Sedan SE. It is the Draw-Tite sport Frame Trailer Hitch, part # 24939. This is a Class l hitch and it has a 1-1/4 inch receiver opening. The ball mount I recommend for this hitch is part # 3593. This ball mount has a 2-1/8-inch rise or 2-3/4 inch drop. For a 2 inch hitch ball I recommend part # 19258 and for a 1-7/8 inch hitch ball I recommend part # 19256....
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  • Will the Draw Tite Hitch # 24905 fit a 2013 Hyundai Elantra GT
    I checked with Draw-Tite and the hitch # 24905 that you referenced is confirmed to fit the Hyundai Elantra GT. To complete your towing setup you may be interested in the following products: Ball Mount # 3594, this is the ball mount Draw Tite recommends with this hitch. 1-7/8 inch Hitch Ball #19256 2 inch Hitch Ball # 19258 Pin and Clip # PC2 Trailer wiring # 118692
    view full answer...
  • Trailer Hitch Receiver and Wiring Harness for 2019 Hyundai Elantra Sedan
    I checked the online owner's manual for your 2019 Hyundai Elantra and it simply says they do not "recommend" towing a trailer with the vehicle, and we can't offer any information about safety or otherwise, because whether or not a vehicle can tow comes down to the manufacturer. In this case, it'll be up to you, and if you do decide to tow you will need the following: - Draw-Tite Trailer Hitch Receiver # 24964 - T-One Vehicle Wiring Harness # 118692 (for all sedans except the Limited model);...
    view full answer...
  • How Heavy of Trailer Can 2018 Hyundai Elantra Tow
    The Curt Class I hitch part # C11424 that you referenced does fit your 2018 Hyundai Elantra Sedan and has a towing capacity of 2,000 lbs trailer weight. I looked up the towing capacity of your vehicle and it appears to have a 750 lb trailer towing weight capacity so you'd be limited to that as your overall towing capacity. Then for trailer wiring you'd want the part # 118692 which is a custom fit option with a very reliable converter box as well. Then for a ball mount you'd want the...
    view full answer...
  • Trailer Hitch Receiver Compatibility with 2018 Hyundai Elantra Sedan
    The Curt Trailer Hitch Receiver - Class I # C11424 is a confirmed fit for the 2018 Hyundai Elantra non-sport model sedan. Because this is the same hitch without the euro ball mount, the Curt # C114242 you asked about will also fit and comes with the 2 inch ball euro style ball mount. If you also need trailer wiring, I recommend the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118692. This custom-fit T-One connector plugs into your Hyundai Elantra's wiring harness,...
    view full answer...
  • Why Won't Draw-Tite 24905 Class I Hitches Fit Korean Made Model 2019 Hyundai Elantra GT Hatchback
    According to the folks at Draw-Tite, the reason the # 24905 Class I hitch won't fit Korean manufactured models is that the rear bumper/frame area of the vehicle is slightly different on Korean made models. The exhaust is routed differently, and will prevent the hitch from being installed, and the driver's side mounting bracket will be blocked by an obstruction on the rear of the vehicle. I can't speak to what was different about the one reviewer's vehicle that allowed the hitch to fit,...
    view full answer...
  • Can Class I Trailer Hitch Receiver Be Converted to Class II on 2017 Hyundai Elantra GT
    You are correct, the only hitches available that fit your 2017 Hyundai Elantra are Class I like the Draw-Tite Sportframe # 24905. Unfortunately, there is no way to convert this into a Class II hitch with a higher capacity. Also, both would still have a 1-1/4" receiver. If you meant is there a way to adapt the receiver into a 2" receiver then that will also not be possible. Even if you could use an adapter it would reduce the capacity of the hitch by 50%. The only way you will be able...
    view full answer...
  • Towing Capacity and Recommended Trailer Hitch Receiver for 2017 Hyundai Elantra
    I'm unable to access an online copy of your 2017 Hyundai Elantra's owner's manual so I recommended taking a look at your manual for the towing capacity. The trailer hitch receivers I recommend are the Draw-Tite hitches # 24939 if you have an Elantra SE or # 24939 if your's is a Limited. Both hitches have a gross towing weight of 2,000 pounds. However, this doesn't mean the car will be able to tow 2,000 pounds. You will be limited by the lowest rated component so if your Elantra's towing...
    view full answer...
  • Trailer Hitch Receiver and 4-Way Wiring Compatibility for a 2013 Hyundai Elantra GT Hatchback
    We do have 2 receivers that will fit your 2013 Hyundai Elantra GT Hatchback as the Curt Trailer Hitch Receiver # C11303 will only fit the coupe or sedan models not the hatchback. Both the Draw-Tite Sportframe Trailer Hitch Receiver # 24905 and Curt Trailer Hitch Receiver # C11400 are confirmed to fit on your Elantra as long as it was not built in Korea. You can check this by checking the 2nd letter of your VIN. If you have an M as the 2nd letter you cannot use these receivers. Both receivers...
    view full answer...
  • Curt Trailer Hitch for Towing a Small Trailer with a 2018 Hyundai Elantra
    The only Curt trailer hitch that fits your 2018 Hyundai Elantra SEL is the part # C11424, and you need to make sure have the factory tow loop (see linked instructions) for this one to fit. If you don't have that factory tow loop then I recommend going with the Draw-Tite # 24939 instead. To complete your towing setup you also need wiring, I recommend the Tekonsha # 118692, and a ball mount kit. You can use the Drawbar # C45521, Pin & Clip # F-4, and then either a 1-7/8" hitch ball # C40001...
    view full answer...
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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Cole B
Installed by:
Cole B
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Chris R
Video Edited:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Isabelle B
Updated by:
Isabelle B
Employee Alexander C
Written by:
Alexander C
Employee Shane H
Test Fit:
Shane H
Employee Jacob H
Video by:
Jacob H

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