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Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring. Powered ModuLite reduces strain on wiring system.
Features:
Specs:
Installation
This custom-fit T-One connector plugs into your vehicle's wiring harness, which is located behind the driver's-side and passenger's-side tail lights. You will have to remove the tail light assemblies to access this harness.
Once you've plugged in the T-connector, run the hot lead up to your car battery. Connect the lead to the included fuse holder, and then connect the fuse holder to the positive terminal on your battery and insert the provided fuse.
Once installation is complete, the 4-way flat connector will be stowed within the jack storage compartment of your rear cargo area.
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 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.
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Average Customer Rating: 4.6 out of 5 stars (246 Customer Reviews)
Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring. Powered ModuLite reduces strain on wiring system.
Worked great for our 2016 Toyota Sienna SE -- straightforward install, especially if you've done anything like this before. E-trailer's video install demos make it a snap. A great value - happy to recommend it to others.
Box poorly packed and apparently this wiring harness fell out of the box. There was tape on the box in one corner so we believe the harness was loose in the box so just fell out. You need to secure all items in the box as ups tends to not be very careful. Further the hitch had nothing to secure it in the box and that further makes it likely to be damaged. Anyway I’ll never know how good or bad this harness was and now have to get a harness from U-Haul at twice the cost as I have no time to wait for one to be shipped.
They sent me something that does not fit my 2017 sienna, even though it was guaranteed to. The product does not match the picture on the box it came in and I wasted two hours of my time getting things set up to install only to find it doesn’t work, I’m very angry and extremely disappointed it’s supposed to have four by four pin but only has two.
Gwendolyn Y.
11/25/2024
Hey Eric. This harness would fit if you have an SE model. If you don't have an SE model, you would nee part # 118648. IN regards to the photo on the box, Tekonsha usual the same image on the majority of their boxes, I do apologize if that caused any confusion. Let me know what sub model of Sienna you have and I can confirm the right harness for you.
Just received it by way of UPS. I'M so excited to do the install tomorrow!
Stephen
11/22/2024
I wanted a project and a wiring harness for my Toyota Sienna. I purchased and installed the harness myself in an afternoon with a tow hitch project. I use it all daily mostly for my mountain bikes.
all the parts fit my toyota van. this will protect the electronics of the car.
Robert
6/26/2024
I havent plugged into a trailer yet, but Ive had no interference with the normal operation of the tailturn signal area of my sienna. Everything is working well.
This is a great product. The wiring was thick and didn't feel like a cheap Chinese product. I'm happy with this wiring harness. I installed it on my 2014 Toyota Sienna. Even though the instruction video is not updated for the 2014, the instructions it came with contained a picture of the shroud and where to cut, which was the only difference (shroud size, only one cut needed on the 2014) between the 2014 Siennas and the ones from prior years.
You'll see in the picture attached, I purchased the loom to protect the wire. I would recommend doing the same.
The only thing that would have made more sense to me is if the box attached to the drivers side since that is where the battery is. There would be a lot less wire to route under the vehicle. Other than that, it worked on my first try and I'm happy with that! :)
Kelly H.
8/12/2015
Its been a year already? Wow! Since I dont have a truck, I use my minivan and aluminum trailer frequently. I have no regrets buying this wire harness and would buy again.
Not for all Siennas. I ordered for my XLE and the plugs were the wrong size. I think this one is only for the SE trim.
The product is fine, shipping was very fast. Packaging was ripped and torn I am surprised that all parts were there.
Parts is great, wish the power line to the battery was just 4" longer that would of made it easier to run the line to the battery.. other then that installation was easy ..
The hitch is solid/sturdy. It was easy to install. I use it frequently and have only had one consistent problem. Once attached to my 2013 Toyota Sienna, ground clearance is only 7 inches. See picture. Add the weight of my boat, and that clearance drops to 3 inches. I realize that most of that blame is owned by Toyota, but still, there's at lease another inch or so that could have been gained through improved design of the hitch. I had to add an Air Lift 1000 to bring it back to 7 inches clearance.
Unfortunately, life got busy after ordering this receiver. It looked well designed, but once I installed it 18 months later, it didn't fit very well. Because we don't plan to use the full class III capacity, the 4 bolts that lined up should work.
Fairly easy installation without the need for splicing or cutting wires. The kit also includes a ModuLite converter box that ensures your vehicle’s wiring matches that of your trailer 1
The hitch fit perfectly, looks great on the van and the wire harness installed easily. One suggestion before installation is watch the videos here on etrailer.com and it makes your installation easier!
Printed instructions were lacking but the etrailer video saved the day.
The black power wire that runs from the battery to the power module was about one foot too short. It would be better to be a foot too long, than short.
The shipping take long time..I contacted the coustmer service and they will follow my item shipping personal but can't ship another one before one month from shipping the first.
Anyway after long time I received the item but the charged me xx.x$ handle and import fees when delivered while I was charged the shipping fees when I ordered..
Easy hookup with clear instructions.
Harness plugged right in, I had plenty of wire for the connection to the battery. I routed the trailer plug wire through the bumper support and slid it out the rear underbody panel.
It was easy to install and I like that it hides in the tire jack cubby.
Wiring Harness works as it should and not too difficult to install.
Great price easy installation
One year later - absolutely no issues with the wiring harness. I followed all of the instructions and things went well. During the install I ran into an issue of the long wire that was going to the battery , was a bit short (despite following the directions ), but a short splice of a compatible wire has fixed the issue. No issues with connecting to my trailer harness. I have always added a touch of dielectric paste to keep the connections good and water out. Proper length - no issues with reaching. Works every time, no glitches. Very satisfied with this product.
Easy to install, easy to understand instructions. Product arrived early.
I installed this myself. Took me maybe two hours. Its been a while but I believe I found a youtube video for wiring my specific car and just followed the directions. It worked the first time I rented a trailer and still works now more than a year later.
Hook up was super easy and video instructions were very helpful.
A real quality item, other brands don't come close
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Alan
7/25/2024
After a year of use, things are still standing up well I do recommend getting a cable wrap to enclose the wires for their exterior run to their connection point with the trail hitch mount but everything continues to work well. No regrets!