T-One Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector

T-One Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector

Item # 118784

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Our Price: $225.97

Custom Fit Vehicle Wiring

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Tekonsha Custom Fit Custom Fit Vehicle Wiring - 118784
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Customer Photos

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-One connector plugs directly into OEM tow package harness - no cutting, splicing or tapping required. Powered ModuLite reduces strain on wiring system. Call 800-298-8924 to order Tekonsha custom fit vehicle wiring part number 118784 or order online at etrailer.com. Free expert support on all Tekonsha products. Guaranteed Lowest Price and Fastest Shipping for T-One Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
  • All Info
  • Reviews (28)
  • Q & A (44)
  • Videos (3)
  • Photos
  • Why etrailer?

Tekonsha Custom Fit Vehicle Wiring - 118784

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

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-One connector plugs directly into OEM tow package harness - 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
    • Designed for use with a factory tow package
    • 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 beneath your vehicle, along the frame rail
    • Plug in connectors
  • 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: 5 amps per circuit
    • Tail lights: 7.5 amps per circuit
  • 1-Year limited warranty


Installation

This custom-fit T-One connector plugs into your vehicle's factory tow package wiring harness, which is located behind the rear bumper on the driver's side of your vehicle. Once you've plugged in the connectors, insert the included fuse into the in-line fuse holder.


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 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.



118784 Tow Ready T-1 T-Connector - OE Replacement 4-Flat - Modu-Lite



118784 Installation InstructionsInstallation Details 118784 Installation instructions

This Product Fits The Following Vehicles

2020 - 2020 Hyundai Palisade

2020 - 2020 Hyundai Palisade

2019 - 2020 Hyundai Santa Fe

2019 - 2020 Hyundai Santa Fe

2020 - 2020 Kia Telluride

2020 - 2020 Kia Telluride



California residents: click here


Video of T-One Vehicle Wiring Harness for Factory Tow Package - 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 Reviews

T-One Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector - 118784

Average Customer Rating:  4.9 out of 5 stars   (28 Customer Reviews)

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-One connector plugs directly into OEM tow package harness - no cutting, splicing or tapping required. Powered ModuLite reduces strain on wiring system.

- 118784
by:
2019 Hyundai Santa Fe

EZ INSTALL So first of all, while I'm handy, I'm no mechanic. I pay others to do most all of my car maintenance and repairs. I watched all the videos (hitch, wiring and wiring mounting brackets) 3-different times, made a small checklist of steps, backed my car up on the ramps and went to work. Bottom line, my son and I had this completed, including wiring in right around 2-hours. Everything was exactly how they showed it in the videos so I felt like I'd done it before. NOTE: my car only has 8000 miles on it, so nothing was rusted. I had always paid others to install hitches on my cars and I believe it was a few hundred bucks. This was a great savings and a good father-son project. If you know how to uses tools, give it a go but first become familiar will all the videos. This has been a terrific experience overall !!!! 691917



- 118784
by:
2019 Hyundai Santa Fe

I just purchased a 2019 Hyundai Santa Fe and couldn't find exactly which wiring Harness I needed until I learned about etrailer.com. Not only did I get the assurance that the harness I was purchasing would fit my vehicle, I got to watch a video to show me exactly how to install it. The price was fair, the fit was perfect and the installation was a breeze. 594853



- 118784
by:

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 610742



- 118784
by:
2019 Hyundai Santa Fe

This just arrived. But I know it’s the right one for my 2019 Santa Fe ultimate 2.4. It looks very high quality. Instructions look good. I know it’s easy to install as I already installed the hitch. So this will be a piece of cake. Thanks! Picture is where it attaches to the car harness. 612279



- 118784
by:

Easy install 723118



- 118784
by:
Hyundai

Super easy install on my 2020 Hyundai Palisade. Only wish it came with an electrical box and a more secure way of attachment. It came with a sheet metal screw which the instructions don't mention what to do with. I hope the double stick tape works! 720527



- 118784
by:
2019 Hyundai Santa Fe

This was so easy. Just plugged it in and it was ready to go. Put it in the same time I installed the Draw-Tite hitch. I was excited that it worked since my 2019 Hyundai Santa Fe did not have the tow package. The helpful online Q&A steered me in the right direction and I felt confident it was the right one! 717635



- 118784
by:

Product was delivered very quickly. Had it installed by my mechanic and he said it went in rather easily 713193



- 118784
by:

Great price and super easy installation. 704516



- 118784
by:
2019 Hyundai Santa Fe

Fairly priced super easy to install, took a long time to make available for my 2019 Santa Fe , but better safe than sorry. 704057



- 118784
by:

Worked as expected perfectly. 703924



- 118784
by:

As advertised Quick and easy 703044



- 118784
by:

Super easy install, especially if you're doing this while installing a hitch. The cover on the rear drivers side access panel (2019 Hyundai Santa Fe) was already off and actually would be easier to remove and easier to connect with than trying to attempt thru the rear taillight (whether installing a hitch or not) which was how the instructions that came with the wiring harness suggested. 699574



- 118784
by:

Receiver hitch fit perfectly with no problems, Was very easy to install took to local shop and they installed it with the wiring harness in 1.3 hours of labor for total cost of $124.00 am very happy it fit so well 698707



- 118784
by:
2019 Hyundai Santa Fe

Perfect Fit 697460



- 118784
by:
2019 Hyundai Santa Fe

easy to install with plug and play 695080



- 118784
by:

arrived in good condition. fit well. 694184



- 118784
by:

Hitch and wiring was perfect fit, instructions were spot on 695885



- 118784
by:

Wiring harness worked great. Installation was very easy; took all of 10 minutes. Most of the installation time was on securing the harness to the vehicle with the provided wire ties. You will have to be creative. I doubled up on the wire ties - I would use one to bundle the wires and then loop another wire tie through the first one to secure the bundle to the vehicle. Overall, a great product. 693089



- 118784
by:
2019 Hyundai Santa Fe

Everything was as said. Great experience dealing with you. 691970



- 118784
by:

Excellent quality, simple instructions and simple install. 667269



- 118784
by:
2019 Hyundai Santa Fe

E-trailer’s website made it easy to find the correct trailer hitch for my 2019 Santa Fe. The videos on the site shows the easy installation. Great products and great assistance where I needed it. Thank you. 666761



- 118784
by:
2019 Hyundai Santa Fe

Fast delivery! Easy to install. Than ks 639394



- 118784
by:
2019 Hyundai Santa Fe

Part was perfect. Installed with ease. 637993



- 118784
by:

Jesse, thank you for your help the part I received was exactly what I needed. Bob 633775



- 118784
by:

received in a timely manner, watched video and installed in about half hour. every bolt and nut needed to install was with hitch. car dealer priced 803 dollars for this. I installed for 260. 617724



- 118784
by:
2019 Hyundai Santa Fe

Product worked perfectly on my 2019 Hyundai Santa Fe. Nicholas from Trailer was very efficient and helpful in providing the part I needed. 612236



- 118784
by:
2019 Hyundai Santa Fe

It fit my 2019 Santa Fe exatly as described it was a quick install and works well. 596882


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Ask the Experts about this Tekonsha Custom Fit Vehicle Wiring

Do you have a question about this Custom Fit Vehicle Wiring?


  • Best Trailer Hitch, Wiring Harness and Ball Mount for 2019 Hyundai Santa Fe
  • The trailer hitch I recommend for your 2019 Hyundai Santa Fe is the Curt # C13195 because of Curt's strong reputation for manufacturing very high-quality hitches that are also assembled in the USA. This Class III, 2" trailer hitch is a complete bolt-on installation so it will not require any drilling into the frame of your '19 Santa Fe. This hitch has a black powder coat finish which helps protect it from corrosion and also has a 5,000 lb towing capacity and 750 lb tongue weight capacity....
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  • Correct Wiring Kit for a 2019 Hyundai Santa Fe with the Trailer Tow Prep Package
  • If your 2019 Hyundai Santa Fe has the tow package then you want to use the Tekonsha T-One # 118784 which has the 4-Way Flat connector that you asked about and plugs into the factory connector which is located under the vehicle, behind the rear bumper, on the driver’s side. You said that you already have the trailer hitch for towing but you didn't mention a ball mount kit. If your trailer hitch has a 2" receiver like the Curt # C13195 which fits a 2019 Santa Fe then I recommend the Curt...
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  • 2019 Hyundai Santa Fe Trailer Hitch and Wiring Harness
  • You can determine if your 2019 Hyundai Santa Fe has the factory tow package either by having a dealership run the car's VIN to check its factory equipment or you can check under the vehicle along the frame on the driver's side to see if you have the mating connector that matches the one shown in the linked photo. If you also need a hitch we offer the USA-made Curt 2-inch model # C13195 which bolts on with included hardware and no drilling is required, as shown in the linked video.
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  • Correct Trailer Hitch for a 2020 Hyundai Palisade
  • The correct trailer hitch for a 2020 Hyundai Palisade is the Curt Class III Trailer Hitch Receiver part # C13427. This trailer hitch is rated for up to 5,000 lbs and it offers a completely bolt-on installation. The best part of all is that it has a hidden design which means only the receiver tube is shown, not the cross tube as you can see in the attached photo. The Curt Class III Trailer Hitch Receiver is also fairly easy to install and should only take around 45-90 minutes or so. If...
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  • Easy to Install Brake Controller Recommendation for 2019 Hyundai Santa Fe
  • I have a really great option for a brake controller for your 2019 Hyundai Santa Fe. I recommend the Curt Echo brake controller part # C51180 as it's very easy to install and use, but also what's great and unique about this controller is that it's self-contained at the trailer connector. You don't have to mount anything to your dash at all and you also don't have to wire anything up for it specifically either. Basically you just need to start with a 4-way if you don't have one with part...
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  • Class III Hitch with 2-Inch Receiver for 2019 Hyundai Santa Fe Ultimate Turbo
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  • Trailer Hitch and Wiring Harness for 2019 Hyundai Santa Fe
  • We do have trailer hitches for your 2019 Hyundai Santa Fe, Draw-Tite # 75908 and Curt # C13195. These are identical in design and installation but I suggest the Curt # C13195 since it offers a higher tongue weight rating. Extra capacity is never a bad thing. For a 4-pole wiring harness for the trailer lights I suggest the Tekonsha # 118784 which will plug in under the car on the driver's side. The picture included shows the connector that will plug in at the tow package harness under...
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  • The Draw-Tite Max-Frame Trailer Hitch Receiver # 75908 is an excellent choice to install on your 2019 Hyundai Santa Fe. For wiring I recommend the Tekonsha T-One # 118784 because of how reliable we have found the Tekonsha products to be. I have attached an installation video of both the trailer hitch and the wiring being installed on similar 2019 Santa Fe models that you can reference. I recommend using the Mounting Bracket # 18144 with the tab on the Draw-Tite hitch to permanently mount...
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  • Recommended Wiring Harness Compatible with 2019 Hyundai Santa Fe Ultimate
  • For your 2019 Hyundai Santa Fe the wiring harness you are seeking is the T-One Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector # 118784. You will likely also want the Mounting Bracket 4-Pole Flat # 18144 and depending on your hitch you may want the No-Drill Mount for Electrical Mounting Bracket - Short # 18140 as well. I've attached the installation instructions and a couple of videos to assist.
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  • Recommended Trailer Wiring Harness for 2019 Hyundai Santa Fe
  • For your 2019 Hyundai Santa Fe I highly recommend the Tekonsha T-One Vehicle Wiring Harness # 118784. This custom harness is designed specifically for your vehicle and it will plug right into a factory port behind the rear bumper (on the driver's side) for a complete plug-and-play installation. It will provide you with a 4-Way connector to connect with and power a trailer's basic signal lights. Tekonsha is well known for making extremely reliable and long lasting electrical harnesses. I...
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  • Recommended Trailer Hitch for a 2020 Hyundai Palisade
  • The trailer hitch that I recommend for your 2020 Hyundai Palisade is the Curt Trailer Hitch Receiver part # C13427. The Curt Trailer Hitch Receiver is a direct bolt-on fit that does not require any cutting or drilling. The best part of all is that it has a hidden cross tube which means only the receiver tube will be present once installed. I have attached a photo to show this as well. The trailer wiring harness that I recommend for your 2020 Hyundai Palisade is the T-One Vehicle Wiring...
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  • How To Tow a Boat Trailer That Has A Reverse Lockout Using a 2020 Hyundai Palisade
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  • For your 2019 Hyundai Santa Fe Ultimate I recommend the Curt Class III Trailer Hitch # C13195 that offers the highest capacity for your vehicle and is assembled right here in the USA. Your Santa Fe Ultimate and the XL model do actually require different trailer hitch models because of how the rear frame/bumper differs between the two. I have attached an image a generous customer sent in of this very hitch on his 2019 Santa Fe Ultimate that you can check out to see exactly what it will...
    view full answer...

  • Trailer Hitch Fit for 2020 Kia Telluride
  • Hmm, I'm not sure how that happened, but the # 13537 is not a fit for your vehicle, you'll want the # C13420. Curt has confirmed that the # C13420 is indeed a fit on a 2020 Kia Telluride, as you can see in the two install photos I've provided. In order to install the hitch, the spare tire needs to be removed and the exhaust lowered temporarily to allow easier access to the mounting points. As you can see if you look closely in the photos, the underside of the rear fascia also needs to be...
    view full answer...

  • Recommended Trailer Hitch for 2019 Hyundai Santa Fe
  • For your 2019 Hyundai Santa Fe I highly recommend the Curt Class III Trailer Hitch Receiver # C13195 because it features the highest capacities available for your vehicle (5,000 pounds towing and 750 pound tongue weight limit) and is made right here in the USA. This custom Class III hitch will use existing holes in your vehicle's frame so you won't have to drill into your brand new Santa Fe. I have attached an image a customer sent in of the hitch on his 19 model Santa Fe just so you...
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  • Hitch and Wiring For Cargo Carrier With Lights On 2020 Hyundai Palisade
  • I recommend Curt Trailer Hitch Receiver part # C13427 to carry the cargo carrier on the 2020 Palisade. This is a great option because it's a concealed cross tube design which will look nice on your brand new 2020 Palisade. The only portion of the hitch that will be visible once installed is the receiver tube. To power the lights on a cargo carrier, you need T-One Vehicle Wiring Harness for Factory Tow Package part # 118784 which will plug into the factory harness behind the vehicle's...
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  • Brake Controller Recommendation For 2020 Kia Telluride
  • The Curt Echo Mobile Trailer Brake Controller part # C51180 will fit any vehicle that has a 7-way plug with a power wire to the vehicle's battery and a good ground connection. It is not in the fit guide yet for the 2020 Kia Telluride (August 2019) but you will not have any issues using the Curt Echo brake controller with the Telluride as long as you have an active 7-way plug. If you do not have a 7-way plug on the Telluride, you will need a 4-pole connector to start with part # 118784...
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  • Best Trailer Hitch For 2020 Kia Telluride
  • I recommend the Curt Trailer Hitch Receiver part # C13420 for the 2020 Kia Telluride which is a Class III hitch and a very easy installation that does not require drilling. This hitch will give you about 15-1/2" of ground clearance which will come in handy when the cargo carrier is attached it will be less likely to ever drag the ground in low ground clearance driving conditions. I have attached an installation video for your reference. If you decide you need the wiring in the future,...
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  • Trailer Wiring Harness Recommendation for 2019 Hyundai Santa Fe
  • The wiring harness I recommend for your 2019 Hyundai Santa Fe is the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118784 because it is easy to install; you will only need to plug it into a connection point under your '19 Santa Fe, which is under the car, behind the bumper on the driver's side. Additionally, the harness manufacturer, Tekonsha, has a very strong reputation for creating quality wiring products and we have consistently found them to be highly reliable....
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  • Trailer Wiring for 2019 Hyundai Santa Fe Without Factory Tow Package
  • The Tekonsha T-One Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector # 118784 according to the manufacturer fits vehicle without the factory tow package. You can confirm you have the tow wiring harness this connects to by looking under the vehicle behind the rear bumper on the driver's side. I've attached a photo to assist.
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  • Recommended Trailer Hitch and Wiring for 2019 Hyundai Santa Fe
  • For your 2019 Hyundai Santa Fe I recommend the Curt Class III Trailer Hitch # C13195 because it features the highest tongue weight capacity and is made right here in the USA. This custom hitch will install using existing holes in your Santa Fe's frame for a no-drill installation. It has a 5,000 pound towing weight capacity and a 750 pound tongue weight limit. I have included the written installation manual that you can take a look at as well. Then for trailer wiring the Tekonsha...
    view full answer...

  • Help Finding the Trailer Wiring Harness Plug on a 2019 Hyundai Santa Fe
  • The correct trailer wiring harness for your 2019 Hyundai Santa Fe is the T-One Vehicle Wiring Harness part # 118784. The port on your Santa Fe that this harness will use is located under the vehicle, behind the rear bumper, on the driver’s side of the vehicle. I am not sure which photo you referenced but have attached one from the instructions for you. I spoke to my contact at Tekonsha and they stated that this plug will be present even though you do not have the factory tow package....
    view full answer...

  • Trailer Wiring Harness Available for 2019 Hyundai Santa Fe
  • We do have a wiring harness to fit your 2019 Hyundai Santa Fe. The correct part is # 118784. Since you have the tow package there's a connector under the rear bumper on the driver's side. The harness plugs in here and then you need to find a good secure location to mount the converter box. It mounts with included double sided tape you just need to make sure the location you choose allows for the 4-way connector to reach the connector on the trailer. You also want to make sure the...
    view full answer...

  • Hardwired 4-Pole Trailer Wiring Kit for 2019 Hyundai Santa Fe Ultimate Without Tow Package
  • In the 2019 Hyundai Santa Fe Ultimate without the tow package you can use Curt universal hardwire 4-pole kit # C59236. I confirmed compatibility with my tech contact at Curt. At the present time (March 2019) this is the only hardwire option confirmed for the vehicle. Please refer to the linked review and installation videos for more details on operation and installation.
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  • Trailer Wiring Install Harness Recommendation for 2019 Hyundai Santa Fe Ultimate
  • There's still a really good chance the trailer wiring install harness for your 2019 Hyundai Santa Fe is present which will allow the Tekonsha part # 118784 to install. This plugs into your Hyundai Santa Fe's factory tow package wiring harness, which is located behind the rear bumper on the driver's side of your vehicle. I attached a picture of where the harness will be plus a link to the install instructions as well. You might check the pins for voltage with a circuit tester like part...
    view full answer...

  • Highest Tongue Weight Capacity Trailer Hitch for 2019 Hyundai Santa Fe
  • The trailer hitch with the highest tongue weight capacity that fits your 2019 Hyundai Santa Fe is the Curt Trailer Hitch # C13195 which has a 750 lb tongue weight capacity and 5,000 lb towing capacity. This is compared to the Draw-Tite # 75908 which has a 500 lb tongue weight capacity while sharing its 5,000 lb towing capacity. The Curt # C13195 is a bolt-on installation that will not require drilling into your Santa Fe's frame to install. This Class III, 2" trailer hitch has a black...
    view full answer...


Do you have a question about this Custom Fit Vehicle Wiring?




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Info for this part was:

Edited by:
Lindsey S
Expert Research:
Jameson C
Expert Research:
Adam R
Video Edited:
Jacob T
Video Edited:
Chris R
Video by:
Dustin K
Video by:
Jonathan Y
Installed by:
Cole B
Written by:
Alexander C
Test Fit:
Robert C
Test Fit:
David F
Updated by:
Isabelle B

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