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Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring - no cutting, splicing or tapping required. Converter is made using SMT to ensure superior performance.
Features:
Installation
This custom-fit T-connector plugs into your vehicle's wiring harness.
Once installation is complete, the 4-way connector will be stowed in a secure location.
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.
A tail light converter is built into this T-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 the trailer. This converter combines 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.
Curt builds each tail light converter using surface-mount technology (SMT). This method of construction involves soldering electronic components directly to the surface of a printed circuit board. SMT eliminates the need for leads, which are used in older through-hole technology. The result is a circuit board that is smaller yet provides more routing area and that offers superior performance, reliability and durability.
Circuit boards constructed using SMT have been shown to perform better under rough conditions with excessive vibration than those made using the through-hole method. And where would vibration be more likely to occur than in towing applications? Curt converters also produce less heat, leading to increased durability and longer life. In addition, lower levels of resistance ensure better performance, especially for parts that operate at higher frequencies.
Each Curt circuit board is made using high-quality components that are pieced together in the most technologically savvy fashion, leading to greater predictability and reliability in functioning.
Average Customer Rating: 4.7 out of 5 stars (154 Customer Reviews)
Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring - no cutting, splicing or tapping required. Converter is made using SMT to ensure superior performance.
The wiring harness doesn’t connect correctly. The blinkers will not work after long hours of effort.
Geneva
7/18/2024
Still unable to get the blinkers to work with the wiring harness.
The Hitch and wiring harness fit perfectly! I used a tool box and some blocks of wood on the right side under the 2021 Kia Soul to hold up the hitch once I got it in place then started bolts on left side, then placed bolts in right side. Light harness took more time due to had to remove panel on left side under car to route wire thru same area that the brake line are routed. The hardest thing was mounting the little black box on left side under car, found a hole already in car where I took a small bolt and nut to secure the black wiring harness box. Biggest thing is just preparing everything and just take your time, I wasn’t in a hurry and took my time plus some breaks which the whole hookup took me 2hours. If you don’t block up the right side of hitch I do recommend lowering the muffler so you don’t damage it.
Ordered the Hitch and wiring kit separately but the ETA for both of them was spot on the install was fast, even faster with bumper removed (three screws four bolts) hauls my 4x10 trailer with a hobie pro angler 14 below and a vibe maverick supb and fishing rod box on the ladder rack above with no problem
Fit was perfect and the wiring harness worked as advertised. Price was good and delivery was very fast. I have used the hitch to pull my tilt bed trailer many times to move things and take kayaks to the lake for family outings. Perfect for my needs.
Excellent kit for my 2021 Kia Seltos. I installed a hitch and this wiring harness included everything needed to install the lighting for the trailer. Whole job to install took less than an hour with E-Trailers awesome instructional videos!
Okay, this was not a 5 minute install, but you knew that before ordering....right?
I should have gotten my SUV up in the air a little better than I did, but I managed to squeeze in where I needed to. I only lifted the back using ramps.
I followed the instructions and example videos and used a trick or two to get this installed (I used a 4' long fiberglass rod to fish up the cable, anything similar would work - fishing pole parts, wood dowel, etc.).
Like I said, wasn't 5 minutes, but in the end I know it was done right and should last. I bought a $4 tester from Harbor Freight and verified the connector was setup correctly (4 connector trailer wiring tester).
I just tested it again, after several months of no use, it's still perfect.
I installed the hitch receiver myself, and this wiring harness myself, and everything is perfect.
Tip, for the hitch receiver put the provided bolts in part way on one side, then use a tie-down strap to hold up that end, while you bolt up the other side. Then you just bolt up the side the tie-down was holding for you and you're 90% done. Hey...if you're on your own you make it work!
Mike
11/12/2023
One year out now and the hitch and the wiring harness are rock solid. I will be buying a couple of mountain bikes pretty soon, sure glad Ive got this hitch. I also used it to haul a rented aerator back and forth from a local rental place. All the trailer lights worked perfectly!
Mike L.
11/17/2023
Helpful Links
Installation was very straightforward, the instructions are fantastic.
I did find that mechanics wire was more useful than the included wire for the part where you have to fish wires behind the bumper. Other than that it was as expected with anything you buy from etrailer.com, GREAT!
The wiring harness has not worked properly from the get go. Sometimes the both the running lights are on, sometimes not, sometimes only one light. Brake lights don't always work. Sometimes they do. The left turn signal has never really worked. The right works though.
When the running lights are working they don't turn off even when the car is off (and the car's lights are off). The only way to get them off is to unplug the trailer. So if I leave the trailer hooked up overnight I need to remember to unplug the lights (and remember to plug it back in the next morning).
I wouldn't recommend this harness. It has not been reliable for me. It might seem like a good idea to not have to splice into your car's wiring but it would be simpler and easier to just splice the wires in.
Jenny N.
10/30/2023
There is a lot going on with this harness. I have a few trouble shooting tips that I would like to have you try. The first would be to check the ground and make sure that it is a good ground that it connected to bare metal on the vehicle. The second would be to take out the fuse in the inline fine connection for 30 second to 1 minute and then re-insert it. If the harness is still experiencing problems then it might need to be replaced.
Helpful Links
It's all already installed...
Guy
11/17/2024
This product has held up wonderfully...been on the vehicle for a year with no mishaps...thank you for a great product...
Works well. No problems. I'm happy with it.
Stephen
9/12/2024
Still working good. No problems.
This harness worked perfectly for the 2020 Hyundai Tuscon! The instructions provided by etrailer.com made it easy for a novice like myself to have the confidence to install and it turned out great! I'd recommend them to anyone!
Paul
10/27/2023
The wire harness hasnt failed. Its been perfect since it was installed. The install instructions provided by etrailer were perfect for the install. It made the install much easier.
Mike L.
11/13/2023
Had the local mechanic install and have had zero issues with this connector.
The instructions say the installation is EASY, Far from it!!
You must run a heavy power wire from the battery under the hood to the control module under the rear bumper. This is extremely tough as there is literally nothing on the underside of the car to hang a wire from. I finally had to disassemble and remove the panels that cover the fuel and electrical and run the wire under there. Hope it never shorts out on the fuel line!! Next the control box is mounted with double sticky tape and the kit supplied tape was old and dried out and turning to dust. So now I need to go to a hardware store but the whole back end of the car is gutted for this install, and can't be driven. Not Happy in Arizona.
And the instructions are vague, with pictures that mislead.
Jenny N.
7/19/2023
It can be tough to route the power wire from the battery to the harness. We have created a FAQ that can help that you can see in the link below. For the double sided tape what I will do is have our Customer Service team reach out to you. You can use double sided sticky tape to install. You just want to make sure it will not be bouncing around as this will shorten the life of the harness.
Helpful Links
seams to fit okay. instructions could be better.
Easy installation. Good fit 2024 Kia So ul.
The wires to the driver side are not long enough. Wish it came with a switch. I had to get my own. Other than that good product.
Straight forward easy install.
I have a 2022 KIA Soul that I recently installed a class one hitch on. I purchased a Curt exact fit hitch for it, along with this wiring harness. It fit perfectly. Due to the electronics within the car, and the LED lights, an additional “brain box” was needed to properly lower my pop up camper lights. The only minor annoyance was having to run a direct wire w fuse holder to my battery from the rear of the vehicle. That took about another hour. Works perfect. And great service from etrailer. Thank you.
Light kit worked great
A year later and still working like new! Great product!
This was a good kit overall. Was pretty tricky for me to find the right place to mount it for my 2020 Kia Soul but overall it worked great in the end.
Looks like a complete kit. I will know soon how easy it will be to connect.
Worked perfect for me. The wiring was a little aggravating, but it works well. I definitely recommend.
I got the package on time even though I had my doubts about UPS and with good reason. have not hooked it up yet
I still have not installed because the directions tell me to connect a ground to a screw that does not exist. I have to drill a hole in the painted surface behind the taillight to attach a ground.
Katrina B.
3/28/2023
Can you please confirm if you are referring to the tapping screw? If so, we can either send you the missing screw or you can take a trip to the hardware store. If not, please let me know what screw you are talking about.
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Jenny N.
7/17/2024
Geneva, I can help troubleshoot with the harness. Has the harness just started this or has it always done so? I will first recommend checking the ground connection on the vehicle. Make sure it is a good ground to bare metal. If the ground is good, I would then use a circuit tester like # PTW2993 to test the right and left hand light location on the 4 way. If the signal is not reaching the 4 way then testing the wires before the converter box and after the converter box to see if the signal is making it through. If not then the harness would be considered defective. I also have a FAQ below that will help.
Helpful Links
faq-4-5-way-troubleshooting.aspx