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Wiring a trailer can get complicated fast, but this harness keeps it simple. The Curt T-Connector plugs directly into the taillight wiring, so there’s no need to cut or splice factory wires. It gives you a 4-flat trailer connector for running lights, turn signals, and brake lights—all with a clean, hidden install behind trim panels.
The powered converter takes all the strain off your vehicle’s lighting system. It uses a black power wire that connects straight to the battery, so the trailer lights draw current from there instead of the vehicle circuits. This setup isolates the power supply to prevent shorts or overloads from damaging your factory wiring.
Good grounding is key to trouble-free towing. The white ground wire attaches to bare metal free of paint or rust for a steady connection. Curt recommends using dielectric grease on all terminals to keep moisture and corrosion out—an easy step that helps prevent lighting issues down the road.
The 4-pole flat connector is the standard hookup for most small and midsize trailers. It handles combined stop and turn signals on the yellow and green wires, plus running lights on the brown wire. It’s an easy way to get all basic trailer lighting functions ready to go right out of the box.
Customer Satisfaction Score:
89% were satisfied with this product
11% of customers were not satisfied
Ratings & Reviews
Use the video that e-trailer provides as the primary guide. The manufacturer instructions do not work as well. Overall the install was GREAT following the e-trailer instructions. Hitch and lights wiring via e-trailer was about 40% the cost of what the dealer quoted me for parts and installation. Follow the video and anyone can do this.
Excellent!
Fit just like they said and was easy to install. Using it right now and I could not be happier.
Thank you, etrailer
Just wrapped up the install of the Class III on my 2013 Hyundai Santa Fe Sport. Product arrived 2 days after order and looked great.
The install was super easy and I was able to do it single-handed. All mounting holes lined up perfectly and zero adjustments were needed. My skill level is average car owner and I handled this with basic tools and the included hardware. Install time for hitch was less than an hour.
Also installed the T- connector wiring harness. Like the hitch, everything matched up with no adjustments needed. Install time for harness was about an hour. Toughest part was running the power wire in a safe, professional looking manner.
All work was done on the floor in my garage. No lift necessary. I did use a hydraulic floor jack and stands, but that gave me plenty of clearance..
Thanks for a great product!
We are a car dealer. I have used etrailer several times for both harnesses and hitches. We install these as part of the car selling process and customers like the results.
The Curtis trailer hitch fit perfectly on our Santa Fe, without any issues. The most difficult part of the installation was taking the car apart to install the wiring harness. I suggest picking up some replacement fasteners for re-attaching the plastic auto parts, as most strip out upon removal. Also, without the benefit of a lift, running the wiring to the battery, while not "difficult", takes some real squirming. Once done, the hitch looks terrific. I can't wait to test it out!
Quality product. The only thing I did different from install video was to run the battery feed wire on the inside of the truck. IMHO if you are running a harness on the exterior it needs to be in convoluted tubing . The same plastic material that is used inside the rubber boot at the tail lamp harness. I tucked the harness under the interior trim, step well covers on the drivers side and the panel at the hood release. Carefully poked a hole in the rubber boot where the main wire harness goes through the fire wall. This comes out just below and to the right of the brake booster.
Worked great. Really no problem installing wiring harness. Its better to watch video before trying to follow written instructions.
Will have no problem ordering parts from Etrailer the next time I need a hitch or wiring harness for a trailer.
The trailer hitch I ordered was an exact fit. I watched the installation video twice just to make sure I knew what to do. The install went without a hitch(pun intended). I opted for a different install for the wiring harness. I live in the northern climate and snow and ice are an issue here. So I wired to the battery inside the vehicle. And I also did not want my connector to hang out of my tailgate. So I went custom there as well. I will do all my business with etrailer in the future. Very fast shipping. The instructional videos these guys do, are priceless. Thank you very much to team etrailer!!!
Ozzy
Kit worked well, rating for ease of install for a 2017 Santa Fe Limited Ultimate (no factory tow package). You have to take off both taillights, the rear cargo hold, the rear trim, pull up the backdoor gasket, run power under the vehicle to the battery, and cut or drill holes in the battery cover and taillight gaskets.
Connections worked perfectly. The power line to the battery was barely enough to make it, but it worked w/out having to rerun. Again the etrailer online/youtube instructions was very helpful.
Word to the wise. Before you purchase, look and see if your car is already equipped with the hitch wiring. Even though my suv did not have a hitch, when I looked under the tail, I noticed the manufacture had the wiring already there. If I had known this, I would have purchased the other wiring kit from e-trailer which is 100% easier.
I'm 70 and had no trouble installing it myself, with the help of a friend to help hold it in place while the first couple of bolts were inserted to hold it. The instructions and especially the on-line videos are priceless. Also installed the wiring kit myself and that was more time consuming, but again, the video made all the difference. If I had this job to do again I'd probably invest in a couple of ramps to make access to the undercarriage much easier. Have pulled a 6 x 12' enclosed trailer about 3500 miles since installation.
This is the 4th time I bought hitches from etrailer to put on my vehicles. The hitch, as usual, was easy to install. BUT I was irritated with the wiring. I started by using the WRITTEN instructions. After I tore apart the rear end of my wife's $50000 SUV the instructions were WRONG! I calmly walked back into the house, logged into etrailers website and found out the written instructions were not even close. There is a very nice video on the install on their website. DO NOT go by the written instructions. Look for the EXACT video of your EXACT installation. NOW, I will go back outside and reassemble my wife's car.
This harness replaced a defective unit, also bought from eTrailer. Video help for the install was really good; the whole job took me about 45 mins on a 2014 Hyundai Santa Fe Sport. It has seen regular use since, mostly U-Haul trailers of different sizes. All weather conditions too.
This was my third eTrailer hitch install - 100% satisfied with all of them.
I just installed the trailer hitch that fits our 2018 Santa Fe. We haven't used it yet but seems to be solid and fits exact according to the auto mechanic shop that installed the hitch for us. I plan to use it to pull a utility trailer I have. Sold my old vehicle so had to set up our Santa Fe with a hitch to take over the job of pulling the trailer. Placing the order was easy and it shipped out quickly so that was good. My mechanic said to also order the better quality wiring harness that went with the hitch; it's an add on. I scrolled down on the sight; found the accessories usually ordered with the hitch, and clicked the nicer wiring harness. Only to find out when everything arrived that the wiring harness is for the KIA; not the Hyundai. So had to exchange that. I'd suggest ` thing. 1) be sure if you order the Santa Fe hitch, the related accessories are indeed for the Hyundai; and not for the sister brand KIA. I wouldn't have know; my mechanic had to tell me. etrailer should have told me at the time of order; not my mechanic once received. It's a website image / pt # management thing . . .
But to etrailer's credit; they quickly sent out the right wiring harness that indeed fits my Santa Fe, and they easily sent me a return shipping label to UPS the wrong wiring harness back. They did it right on the phone; no questions; no delay; no cost to me.
So in the end I gave a 5 star for excellent customer service to solve the problem. I'm assuming the hitch itself will work well once I hitch it up to my trailer.
It's such a pleasure buying products from etrailer. Lightning quick service, how to videos and the product always works as promised. Thx for 15 yrs of great service
Larry G.
8/17/2020
Still perfect
Etrailer does it again, install video made the job easy. System works great, only wish I had done more research on or '15 Santa Fe. It is wired for the tow package so I could have gone with the easer install/system. Hardest part for me was snaking the power wire to the battery.
Scott E.
2/13/2017
Still working with no issues.
It's great that this kit gets its own power right from the battery and doesn't present a load to the tail light circuitry of the car. It's easy to install and would have been even easier if I had access to my ramps when I did the installation. You really will need good access to the bottom of the car for installing the wire up to the battery.
Definitely watch the instructional video!!
I wish there was better information about the connectors already in place on my car. There might be a different kit I should have bought that would plug directly into those connectors. Anyway, this kit works well and wasn't difficult to install.
Mike L.
7/23/2018
Usually the connectors you located wont be active unless the vehicle was equipped with the factory tow package.
I found that the product was extremely well made and have used it well since installed. The directions were very accurate and the installation went well for a Senior Citizen. I would recommend that the wiring be installed into some plastic tubing to protect it wiring run from the road stones and suspension abrasion from the battery location to remote control box. It took my longer to install but it fit beautifully on my Hyundai Santa Fe Sport.
This unit was well worth the cost and first class in design and fabrication!!
John S.
10/18/2017
This system looks and works well. Cant beat the quality and no indication of surface problems looks as good now as the day I installed it!!!
your product, a tow hitch was excellent as per the installation of your video concerning the tow hitch somewhat disappointed with no video for the wiring of the 2014 7 seater SUV Santa Fe Hyundai.overall experience was excellent as the product also was superior. an instructional video showing how the wiring harness was to be installed would have been a much better choice than a diagram on paper so if all possible please make the video for this particular vehicle thank you
Maria C.
6/24/2015
Still Great
PERFECT FIT for our new 2015 vehicle! Very high quality product. Very well packaged. Thanks to your youtube installation video my husband had the hitch installed BY HIMSELF with no lift, no special equipment in about 30 minutes. Now he tackles the wiring.....We saved $350 over what our local trailer hitch installer quoted......thanks!
Pam C.
5/26/2016
Its now been a year since purchasing and installing our hitch and it looks like it did a year ago - new. No quality or performance issues. No wiring issues. We use the hitch frequently for small jobs that require our utility trailer. We still believe that this was a great decision on our part to go with etrailer.
The only problem I had was that the video was for a 2016 Hyundai Sante Fe, and mine was a 2018. It just required the additional removal of the container behind the jack storage container. Then, after removing three screws fastening each side panel to the floor I was able to access the wiring, and complete the job. It saved me hundreds of dollars doing it myself.
Need the video provided by Etrailer. Instructions for product lame. But with video, installation is a walk in the park.
We have bought other products from etrailer and are always pleased with our products. We just finished with the hitch and wiring and are happy with it all. Thank you for everything.
Got this hitch to be able to add a bike rack. Didn’t like the idea of having a rack that hooked on with straps, especially 3 bikes now and another 2 later.
The product came really quick and please watch installation video before installing. Saves a lot of time and you learn a few tricks while watching video. The hardest party was the wiring. Direction were easy, but recommend having 2 people for the job. Helps a lot.
C56184, and the trailer hitch. This could have been a disaster had they not been any videos with step by step footage. The trailer hitch was so simple. 30 min by muselfnit was up. The wiring harness another hour, but its professionaly done and hidden. Very easy to follow along with the video. Thanks to etrailer for the instructional videos.
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At etrailer 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.
Pike H.
8/15/2018
Very happy here. Thank you!