T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
(797 reviews)
Price: $66.81
In Stock
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
Retail:$80.86
Our Price: $66.81
You Save: 17%
Will this fit?
To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
In Stock
Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.
- All Info
- Reviews (797)
- Q & A (0)
- Videos (15)
- Photos
Tekonsha Custom Fit Vehicle Wiring
- 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.
Features:
- 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 point in rear cargo area
- Plug in connector
- Includes ModuLite to ensure that your vehicle's wiring matches that of your trailer
- Powered module connects directly to battery to avoid overloading vehicle's electrical system
- Constructed of 16-gauge bonded wire
- Comes with dust cap for 4-way flat connector
Specs:
- Maximum amperage:
- Stop/turn lights: 2.1 amps per circuit
- Tail lights: 4 amps per circuit
- 1-Year limited warranty
Installation
This custom-fit T-One connector plugs into your vehicle's wiring harness, which is located behind the driver's-side interior trim panel in your rear cargo area.
Once installation is complete, the 4-way flat connector will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure.
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 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.
118784 Tow Ready T-1 T-Connector - 4 Wire - Modu-Lite
Item # 118784
Installation Details
This Product Fits The Following Vehicles
- 2022 - 2024 Kia Carnival with Factory Tow Package
- 2020 - 2022 Hyundai Palisade with factory Tow Package
- 2022 - 2023 Hyundai Santa Cruz with Factory Tow Package
- 2019 - 2023 Hyundai Santa Fe with Factory Tow Package
- 2020 - 2022 Kia Telluride with Factory Tow Package
- 2022 - 2023 Hyundai Tucson with Factory Tow Package
California residents: click here
Video of T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Video Transcript for Tekonsha Custom Fit Vehicle Wiring - Trailer Hitch Wiring - 118784 Review
Speaker 1: Today we're taking a look at a T1 vehicle wiring harness for factory tow packages. This product fits certain years of the Hyundai Santa Fe. To ensure that it is a fit for your vehicle, you can always use the vehicle fit guide which is located at etrailer.com. It provides a four way flat trailer connector at the back of your vehicle and to power your trailer's signal lights. It is designed for use with the factory tow package and it is compatible with five pole, six pole, and seven pole adapters. Adapters are sold separately.
Comes with a dust cap here for the four way flat connector; that way you can cover up the connection points when the plug's not being used. The black box is the included modulite. This ensures that your vehicle's wiring matches that of your trailer's. The power module connects directly to the vehicle battery through the wiring system to avoid overloading your vehicle's electrical system. It connects quickly and easily.
You don't have to worry about cutting or splicing any wires. Just locate the connection point beneath your vehicle on the frame rail and plug in the custom connector, and then you can secure the wires up and out of the way with the included cable ties provided in the kit.Then you'll also need to mount the converter box to a safe, out of the way location. You can do that with the included screw or you can do it with the included double sided adhesive foam tape. Now once your installation's complete, the four way connector will be stowed beneath the vehicle near the trailer hitch. We do recommend using a mounting bracket to keep the connector secured and easily accessible near the hitch.
It's also recommended that you use a small amount of dielectric grease on all electrical connections, like the plugs on the vehicle and the four pole connector, to help prevent corrosion. That is sold separately and available at etrailer.com. The maximum amperage for the stop and turn lights is five amps per circuit. For the taillights it's 7.5 amps per circuit. That's gonna do it for today's look at the T1 vehicle wiring harness for factory tow packages..
Customer Satisfaction Score:
97% were satisfied with this product
3% of customers were not satisfied
- Wrong item was ordered
- Product did not meet expectations
- etrailer mistake
Customer Reviews
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118784
Average Customer Rating: 4.9 out of 5 stars (797 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.by: Gary04/13/2023
2023 Hyundai Santa Fe
Quick delivery, arrived intact, nice to have the extras in a separate box.
Fitting went well, put vehicle up on ramps for more clearance.
One tip, once you have all bolts in, just run lowers in to pull hitch up to body, do not tighten, I did and there was a small gap between side plate on one side and wasn’t pulling up even with a lot of torque, loosened bottom bolt slightly and side torqued up nicely.
Bracket makes for a “factory” look.
Wiring was easy, made sure the control box was tied with wires facing down and tied it to factory plug which was above the hitch wiring plug.
Zip ties are too short to go around hitch, so get yourself a few longer ones to save joining.
by: Cally04/17/2024
I've purchased two trailer hitches from etrailer, plus wiring harness, etc. What a great experience. The instructional videos are second to none. I wish all companies were as good as this one. Great price, awesome products, fast delivery, excellent customer service. What else can one ask for. Trust this company, they won't steer you wrong, and once they make a deal, there are no unexpected hitches! ;-)
by: Barney 04/24/2024
ordered tow bar and harness from etrailer. got it very fast and staff knew what they were talking about' set me up with the right package.went on no problems would recommend them to anyone.
by: Joshua03/30/2024
The Curt trailer hitch receiver works as advertised. Would recommend
by: Steven 04/30/2024
The wiring harness was exactly as described. Installation was quick and easy, and it works flawlessly.
by: Mark04/26/2023
Everything went together exactly as was described.
Mark H.
4/27/2024
Very well as expected.
by: John04/08/2024
The wiring harness was plug and play, very easy to install. Everything needed to to secure the wiring was included.
by: Frank02/14/2023
2023 Hyundai Tucson
It all worked great, your installation videos were what made it possible for me to install the hitch and wire harness on my 2023 Hyundai Tuscon. The hitch fit perfectly the bolt holes lined up. The hitch was flush with the care frame there was not a MM of space between the hitch and car frame (see pic's) Note the hitch shipping box was damaged and had a hole in. But the wire harness did not fall out (see pic's)
by: Doug 04/10/2023
Simple to use web site, fast shipping. Nice product, good quality build. Application choices are good.
Doug
4/11/2024
Ive had no problems with the product so far. It was very easy to install and straight forward.
by: Andrew 04/23/2024
Super easy to install, works great with vehicle... speedy delivery and great communication... highly recommend etrailer.com. A+++++++
by: Mark 04/09/2024
Easy installed and after being used over 100 times in one year, NO PROBLEMS.
I WOULD order from etrailer.com again.
by: Ben12/22/2023
This hitch is great! I installed it myself with basic tools. The wiring harness made it easy.
by: Raul C.09/29/2022
Bought this with this the etrailer brand hitch for my 2022 Hyundai Santa Fe Calligraphy. Easy plug and play install. Wiring harness package was missing when the hitch arrived as the box had popped open and it most likely fell out. Customer service had a replacement in the mail the very next day. Thank you!
by: Jim B08/28/2022
I am so glad I came upon the Curt trailer hitch receiver. It's exactly what I was looking for because it actually has the crossbar tucked behind the bumper and all you can see is the receiver! And the T-One harness was easy to install and works great.
by: Christopher09/28/2020
2020 Hyundai Palisade
Looking at the online video showing a similar unit from U-haul...a metal clip that holds 4 way wiring connector was present and made it easier to support the unit. However, the unit I got from etrailer did not contain that clip. If this was a mistake, I would hope that clip is available.
Tyler M.
10/7/2020
Hi Chris, Thank you for your review. This wiring harness does not come with a mounting bracket. If you are looking to install one, I would recommend the Mounting Bracket 4-Pole Flat, product 18144. use the self tapping screws to attach it to the plastic bumper or the nuts and bolts to attach to the vehicle frame or metal bumper. If you do not want to screw into the bumper or frame, then I would recommend the 4-Flat Universal Mounting Bracket, product 118149. This one will come with zip ties that will secure the bracket to the hitch.
by: Stephen03/23/2021
2020 Hyundai Santa Fe
I picked the Curt trailer hitch over the etrailer hitch because it sticks out further past the bumper. I have the Thule T2 Pro XL bike rack and wanted to make sure I have enough clearance between the bike rack and the back of my 2020 Hyundai Santa Fe. Even though, your video shows enough clearance (1 1/2 inches ) with the etrailer hitch, with the Thule T2 Pro XL bike rack on the 2020 Santa Fe, I wanted more clearance. With the Curt hitch installed I have 3 inches between the closest point on the bike rack and the back of the SUV.
The installation was straightforward and easy. We did use a lift which made it much easier than the previous installation I did laying on the ground under our Honda CR-V. For that SUV I got the etrailer Hitch.
I followed the instruction video for the wiring harness, and it was a simple installation.
by: Kurt08/31/2022
Harness easy to install actually had alot more wire than needed. I understand Hyundai has now issued a recall related to their factory towing harness, who supplies this harness are they similar or the same supplier.
by: Jimmy T04/04/2024
video is spot on for installation. this is third hitch from you guys! So simple for DIY people and quality has been great! Would not hesitate to recommend, and I do not say that lightly.
by: Mark08/16/2023
Install went exactly as you described. Great quality and price!
I painted the exposed portions silver to match the bumper and added a hitch stoplight. I also added a full size spare... warning, that becomes a tight fit!
by: Scot Miles03/08/2019
Easier than video of installation. Locate the cars wiring harness, unplug ; then open and plug up new product with one snap, and secure wire line along installed mounted support to flat surface and stick-on square box. Then continue securing wire line on other side of hitch and finally mount any excess wire to hitch while leaving short piece free to serve as connecting 4 post receptor. Over and done with. Thanks for being true to your easy promise
by: Don06/28/2023
This unit has been on the vehicle for almost a year and still looks like new, unlike other brands that start flaking and rusting. It was an easy installation. This is the 3rd hitch I have bought from etrailer and as the last two I am very satisfied with the product and customer service. Keep up the good work!
by: Alfred03/18/2020
Hyundai
This trailer wiring kit was the exact match for the existing plug and play wiring underneath my 2020 Hyundai Palisade. However, you will need to order a separate bracket available at etrailer also to attach the trailer 4-pin connector plug to either the hitch or bumper fascia. I attached mine to the fascia pictured below.
by: Tom N.07/04/2023
Very happy with my trailer hitch. I used the video instructions to install the hitch and wiring harness myself in my 2021 Santa Fe.
by: Richard07/06/2023
Have had the hitch for a year and use it regularly to tow my fishing boat (and several U-Haul trailers). Easy install from good instructions and it looks as good now was when first installed. The paint is not showing any wear.
by: Jerry01/30/2022
works as designed if all you need or are going to use is a 4 pin flat connector., just plug and play. However the 2021 Hyundai Palisade is capable and prewired for a 7 pin. etrailer needs to work on an aftermaarket 7 pin similar to the Kia Telluride OEM 7 pin harness. (works for Palisade also}
Jerry
1/30/2023
Update: I see where there is now a custom harness for he 7 pin round rv the 4 pin flat connector that I have has met my needs.
25
797
Show More Reviews
See what our Experts say about this Tekonsha Custom Fit Vehicle Wiring
Info for this part was:
Expert Research:
Mike L
Expert Research:
Jameson C
Expert Research:
Adam R
Edited by:
Lindsey S
Video Edited:
Joshua S
Video Edited:
Jacob T
Video Edited:
Chris R
Video by:
Dustin K
Video by:
Jonathan Y
Video by:
John S
Video by:
Thomas T
Video by:
Schuyler H
Installed by:
Cole B
Updated by:
Wilson B
Updated by:
Isabelle B
Written by:
Alexander C
Test Fit:
Robert C
Test Fit:
Conner L
Test Fit:
David F
Test Fit:
Ryan G
Test Fit:
Clayton O
Test Fit:
Bradley B
At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Product Experts Available Now!
Call 1-800-940-8924
Gary S.
4/15/2024
Still where I put it and no issues.