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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 (127 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.
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!
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
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
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
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.
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.
Worked perfect on vehicle listed.
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.
Excellent so far. Install was tricker than expected and I’m not a novice. The video is extremely helpful, but they do the “and then just…” thing at a couple of points where more detail/step by step instructions would be really helpful. Great products though, as usual. I would purchase again, just know that you’ll need to do some of your own thinking and problem solving on the install. If you’re not comfortable doing that, go to a shop.
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.
Fast shipping and easy installation. The etrailer installation videos make the installation simple. I highly recommend etrailer
Everything is working great !
This product helps me tow at least twice a week for the majority of the day. Absolutely no complaints. Super easy to install with very straightforward instructions! In fact I love this product so much I’m thinking of installing one on my other vehicle.
Fit perfect and was easy to install.
works well no problems at all
Great product! I received my order within a few days of ordering it. The install was very simple. The longest portion of the install is routing the power wire from the battery to the rear of the vehicle. I used a "fish tape" to help with the task and followed the brake lines for most of the route. The instructions were easy to read and very simple to follow. The connectors fit perfect and within an hour (plenty of water breaks because the of the Oklahoma heat), I had it installed. Works perfect! I would suggest that you have a few more zip ties on hand to helps secure the power wire.
Great job etrailer.com! Perfect company (as usual)!!! Thanks for the quick shipping!
Brent
7/6/2021
Great product. No issues at all and is still working perfect.
Have not installed products at this time, but all look very good. I’ve used Curt Towing Products in the past and the quality has always been 1 class. First time I’ve used etrailer, website is user friendly, order arrived a day early, and was packaged well. Price for items ordered was very reasonable. Called customer support when ordered arrived to verify some information, and support was excellent!!!
So far so good!!!….. I would recommend!!!
Great product
Works well. No problems. I'm happy with it.
It's all already installed...
I followed the advice and then video and went and got the kind of connectors that include heat shrink on their ends. Just let me do a perfect job of installing this hardware. But I do highly recommend you look for the YouTube videos that etrailer did on the subject.
Wiring harness was easy to install per the instructions and every part appears to be high quality. Wire lengths provided were much more than enough for the Tucson it was installed in, with several feet to spare for each wire.
Michael
7/20/2021
Still no issues. Wiring harness continues to function properly.
Great kit that is easy to install.
Good quality, great service as always from etrailer. A little more complicated on some Kia models due to needing the power run from the battery, but we had a professional vehicle accessory place so that wire after we did the rest of the effortless initial install, and everything came together just fine.
I liked the wiring harnesses for easy connection the lights. And even though this needed to be connected to the Positive terminal it was alright.
My only complaint is the module with all of the wiring needs a more secure method of attachment. Mounting tape provided was not sufficient. I ended up making a harness with Pipe Straps.
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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!