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

I purchased a 2020 Sorento and needed to tow trailers. I purchased the receiver as well as the T-connector wiring package. The wiring package was a breeze to put on, I followed the video from the web site, and had it installed in 15 minutes.1399374

Great how to videos. Easy installation. I was disappointed that I didn’t get the dust cover for the 4 pin connector.1357780

The Curt T-connector wiring should have a small rubber dust cover for the 4 pin connection. I sent your information over to customer service.

-- Heather A - 08/23/2022

147134

Took about an hour to install and was fairly easy. My vehicle required the tail lights to be removed and the wiring fed up inside the fenders and the main power wire had to be under the vehicle to the battery.1394755

My parts came very quick and were accur ate..ty1402121

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The harness connector c56256 not working properly. After installing trailer hitch looked good but the harness c56256 has problem, checked light left signal work brake light work but right signal not working.
I need to call or need nice replacement c56256 harness connector.1250908

Customer Service will reach out to you.

-- Sierra K - 01/24/2022

131720

by: Mr M03/04/2020

2019 Kia Sorento

Easy to install, I like how it isolates the electrical system and it works great. Your video instructions were outstanding. With the video a five year old could install the wiring. This was installed in my 2019 Kia Sorento. The first pix shows in the back very low profile, the second pix shows inside the engine compartment, truly cool. 763170

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Ive had no issues at all. Works great. I did bottom-out once but it was my fault, deep ravine. The hitch seems to stabilize my rear end somewhat. Dont know if its good or bad. Forgot to mention, your wiring harness is super cool and easy to install.

Mr M - 03/05/2021

109546

This is the second trailer wiring harness that I have installed on a Kia Sorento. The first was on my 2012 Sorento. This one is on my 2014 Sorento. Having used the online video installation instructions the first time around and having no problems, I went straight to the video for my 2014 Sorento. The Curt T-Connector kit makes wiring easy. No splicing, just plug in the matching connectors, mount the power converter and run a few wires for a ground and forward to your battery. Hiding the wires behind the hitch as per the instructions with cable ties gives a clean look. I also mounted a Curt plug receptacle to the hitch so that the connector is not just hanging on the safety chain holes. As you can see from the photo I believe this gives a clean , professional look.263762

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Paid for 2 day shipping and received it 5 days later. Don’t pay for the faster shipping.1300205

We take pride in our shipping, and do not like to see any complications. I have sent your information over to our customer service department for them to assist you in this matter.

-- Katrina B - 05/31/2022

140964

The install video is a great help 1401510

by: Dave S08/08/2017

Kia Sorento

The trailer receiver was an easy installation, installing the wiring kit in a Kia Sorento was a pain.
We have been using the package for one year with no problems. Yes, I would order from Etrailer again.
My order was shipped promptly and arrived in good condition it was excactly as described.417887

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by: Patrick10/10/2021

2017 Kia Sorento

The item worked well until it recently failed for no particular reason that I can figure out. I have taken it apart almost entirely and still cannot get it to function without blowing a fuse. Was easy to install…. But will need to order a new one.1175701

This sounds like the converter box on the trailer wiring has an internal problem which is usually caused by a short on the trailer wiring which is now causing the wiring harness to blow fuses. You will have to replace the trailer wiring harness, but before you do that, I would look over the trailer wiring to look for any signs of shorts like cut or exposed wires.

-- Sierra K - 10/18/2021

122686

The f/irst unit did not work properly for the passenger side, replacement worked perfectly. 2014 Kia Sorento i4. The instructions and the video were both very incorrect for this vehicle. The installation for the power cable is the only thing you have to follow and the video shows where I ran the cable, before I viewed the video. This unit can be installed by removing the 2 tail lights if the power cable is already ran, otherwise you only have to remove 5 plastic screw plugs to remove the cover underneath the driver side of the vehicle to run the wires. Much easier if you put the rear on ramps or jack it up. The unit plugs into the drivers tail light and all of the other cables, after the black power cable is connected and you screw in the ground cable, simply drop down and you can reach them from the bottom, even with large hands. You can shine a light underneath the vehicle if you are in a poorly lit area and can look down the tail light holes to see the opening where you will reach in and pull the wires out underneath the vehicle. It is easier with the cover removed, but I did not need to do that for the re-install nor did I do it at all for the passenger side either time. I did not have to remove any of the interior, nor mess with the grommet behind the driver side interior panel. I do not have any idea, even after repeatedly viewing the video (which is much more informative for a non-mechanic than the instructions) and re-reading the instructions. Also note, this kit is plug-n-play. No blue splicing connectors like the video shows on the same page. You unplug the tail light from the car, plug the controller in (don't unwrap the driver side wires either) to the car and the other end into the tail light. This is how simple it is. Took me 1 hour to install it the first time and 45 minutes to run the power cable because I had to figure out a safe route, which turned out to be along the round wheel panel an then the same path the video shows going forward to the battery. It took about 5 minutes to do the re-install now that I knew nothing had to be removed from the vehicle except for the 2 tail lights.
5 stars for simple installation. Wish the instructions were made for someone who has never done an install before and again I have no idea what they wanted to run through the grommet. I suppose maybe they want the passenger green wire ran inside the car instead of across the hitch??? I was not able to make out what the instructions wanted- too vague. The video is not for this kit and lacked the grommet area along with how to begin the black power cable – only shows from the front of the rear wheel to the battery and has no specific instructions on how to route it.
Oh, it also tells to disconnect the existing cables, if any, going through the grommet and to be careful not to break the plastic tabs on the connector. I was not able to figure out how to unplug the connector, but luckily none of that that was needed. If it is needed, I was not able to make out what they wanted me to do with the grommet section.
In case it helps, I would do it this way:
1) Remove the 2 taillights and place them in a safe place.
2) Connect the black power cable, run it to the battery, leaving about a foot sticking out of the tail light hole. Ensure you can always get to the but connector in the future.
3) Watch the video and ensure the ground wire and screw are EXACTLY where they tell you in the video. You must screw through 2 layers of metal and be in the area where the tail light will go back in place all of the way.
4) Do not unwrap the drive side wiring. Unwrap the other cables and drop them down the hole, reach in the whole, or remove the cover, and pull the wires underneath the vehicle.
5) Stick the unit to the same place the video shows.
6) Plug in the driver side taillight and screw it back to the vehicle.
7) Run the green wire to the passenger side. Use a pull wire or bungy cord down the hole and pull up the green wire. Connect it to the tail light and screw the light back on the vehicle.
8) The video shows large wire ties for the wiring, but there is only ONE, use it for the green wire and the 4 connector as the video shows.
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by: Logan02/01/2022

easy install. plug is tight to push in. im in canada and plug is getting corroded. used on a kia sorento 2014 ex1256974

by: Dustin10/09/2021

Worked fantastically. Used it to tow a trailer from New Jersey to Florida with no issues. Very easy instructions and quick installation. I even recommended it to me neighbor who had the same vehicle.1175311

by: Joshua03/24/2022

Perfect fit and easy install. I've used these guys for all of my towing needs1276943

This makes adding a trailer plug easy. 883838

Great product. Easy plug and play

Barry - 09/20/2021

121238

The Curt wiring harness for my 2018 Kia Sorento works well. I gave it 4 stars since the instructions that came in the Curt package were somewhat confusing and didn't fully apply to my 2018 Sorento. However as long as you follow the installation instructions in the excellent etrailer video which are spot on you'll be fine. One thing I did do was to switch to a better grade of double sided tape to attach the controller. Just personal preference.1005255

by: bill axon08/16/2017

The second install - a "Upgraded" system worked great. It was a plug 'n play so I didn't have to splice, solder and tape wires. Your video and printed instructions were very clear and spot on. Screwed the flat 4-pole mounting bracket to the hitch frame and used JB Weld to bond the flat connector to the mounting bracket.

thanx,
bill421101

trouble free, no problems

bill a - 08/16/2018

42448

by: Brandon 06/15/2021

Definitely watch the videos before attempting this. You have plenty of wire to make the run to the battery, but the video gives a few pointers that helped a lot. Great quality connectors. It’s been a year and have put many miles on this kit.1065593

Extremely helpful video on etrailer website convenienced me to purchase this wiring harness for my 2018 Kia Sorento. Every bit as easy as pie! A well engineered harness with plenty of length on the wiring and all the plugs matched. You may need additional black zip ties on hand if you’re picky like me.500101

Installed it a year ago. Everything still works perfectly! Be sure to watch the video before you begin installation and you will be just fine!

Jim H - 04/28/2019

54578

Nicole T was a great saver of Get to g my vehicle ready to pull my trailer. The wiring harness I purchased thru a different supplier failed to ask a crucial vehicle option. It caused the wrong wiring harness to be purchased. I contacted Curt directly and Nicole T was on the job with her "A" game. She asked the right questions, allowing me to select the correct wiring harness. She arranged shipping to ensure I receive it as early as possible, the next day. Installation was quick & easy. Thank you Nicole T.556711

Great, it has lived up to my expectations. Again, without Nicole T knowledge of your products & ability to ask the required information, I would have had to postpone my trip & spend additional money. Thank you again Nicole T & Curt.

Pat a - 08/22/2019

60283

Just received yesterday along with the Drawtite hitch- arrived within days of my ordering. Not installed yet, however appears to be precisely what is needed for my Kia Sorento. The ordering process BTW- determining the correct harness for my vehicle was quick and easy.

I did some shopping around. I wanted to deal directly with a company (as opposed to giving my business to one of the BIG on-line sellers) and very glad I did. etrailer.com has already demonstrated excellent customer service both before and after the sale.

BONUS: They had the best price too! :->994622

etrailer supplied the correct part in a timely manor and got it to me in Canada, so that it can be installed in time for hauling my boat on my upcoming vacation.1107283

Works well and was pretty easy to install. Although part of the reason it was easy to install was that I didn't have to run a wire all the way from the back of the car to the battery. And there is the problem. As I found out after I ordered this T-connector, all 2016 Kia Sorentos with a V6 or a Turbo, come with a trailer prep package from the factory. That includes additional wiring at the back to install trailer light without taking out the taillights. Much easier. Your website doesn't recognize this, or even ask the question about what model you have and insists that the correct harness does not work with the my Sorento. It would have saved me a lot of time and swearing.933600

Easy product to install, great service, love it.1292723