T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
Item # 118498
Our Price: $73.76
Confirmed to Fit
2012 Toyota Sienna
excluding SE
SE
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- All Info
- Reviews (235)
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2012 Toyota Sienna - T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Custom Fit
- 4 Flat
- Trailer Hitch Wiring
- Tekonsha
- Powered Converter
Quickly and easily install a 4-way trailer connector on your Toyota Sienna with this custom wiring harness. T-One connector plugs directly into existing wiring. Powered ModuLite reduces strain on wiring system.
Features:
- Provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights
- Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately)
- Connects quickly and easily
- Locate connection points behind tail lights
- Plug in T-connector
- Run hot lead to car battery
- Includes ModuLite to ensure that your vehicle's wiring matches that of your trailer
- Powered module connects directly to battery to avoid overloading vehicle's electrical system
- Constructed of 16-gauge bonded wire
- Comes with dust cap for 4-way flat connector
Specs:
- Maximum amperage:
- Stop/turn lights: 2.1 amps per circuit
- Tail lights: 5.6 amps per circuit
- 1-Year limited warranty
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.
ModuLite Powered Tail Light Converter
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.
118498 Tow Ready T-1 T-Connector - 4 Wire - Modu-Lite
Installation Details
California residents: click here
Customer Satisfaction Score:
83% were satisfied with this product
17% of customers were not satisfied
- Wrong item was ordered
- etrailer mistake
- Product did not meet expectations
Customer Reviews
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118498
Average Customer Rating: 4.7 out of 5 stars (234 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.by: Thomas03/09/2024
2011 ToyotaSienna
The product is fine, shipping was very fast. Packaging was ripped and torn I am surprised that all parts were there.
by: Jason03/04/2024
2014 ToyotaSienna
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.
by: Matt R.12/27/2023
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.
by: Matt 12/08/2023
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
by: Sam...03/06/2024
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..
by: Tim 05/06/2024
Easy hookup with clear instructions.
by: Kelly House08/12/2014
2014 ToyotaSienna
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! :)
by: Brett 02/07/2024
It was easy to install and I like that it hides in the tire jack cubby.
by: Terrell 01/30/2024
Great price easy installation
by: Bob 02/14/2024
Easy to install, easy to understand instructions. Product arrived early.
by: Jim B.03/27/2020
2013 ToyotaSienna
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.
by: David 03/15/2024
2012ToyotaSienna
Hook up was super easy and video instructions were very helpful.
by: Justin 11/15/2023
Wiring Harness works as it should and not too difficult to install.
by: JC08/25/2022
2013 ToyotaSienna
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.
by: Dean 06/11/2023
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.
by: JMS09/05/2023
The product worked well and was easy to install. However, the power wire that runs to the battery is about 6" too short. I was able to make it work, but barely. I nearly needed to extend it. If it were 6-12" longer it would have worked so much better.
However the instructions were easy to follow and I greatly appreciate the videos from eTrailer.
by: Michael 07/07/2023
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.
by: Mitchell07/30/2019
2011 ToyotaSienna
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!
by: Greg07/17/2023
So far it has been just fine good quality hitch . so far i have only used it for a cargo carrier worked great .
by: Alan 07/24/2023
2016 ToyotaSienna
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.
by: Scott 08/10/2023
Plenty of heavy gauge wire to complete installation.
Good instructions.
by: Bob10/13/2023
2014 ToyotaSienna
Website relatively clear for selecting product. Video tutorials excellent. Order process easy and fast. Product shipped same day and delivered for free two days later. Product installed perfectly and is good quality product.
by: Timothy03/02/2024
2012ToyotaSienna
Haven't installed yet but quality looks great as usual.
by: Philip 02/08/2024
2014 ToyotaSienna
Works great easy install reasonable pri ce
by: Michael11/11/2022
2015 ToyotaSienna
Horrible customer service! Next to comcast this is the most frustrating company I have ever had to deal with. They sent me the wrong part 2 times. I even contacted the manufacturer to confirm they were sending me the wrong part and etrailer still don’t seem to understand their error. I have communicated with no less than 8 different people and still don’t have the right part. I am sure they will want to charge me a classy “restocking fee” when I have been waiting on them for weeks. If anyone actually cared this would have been an easy fix. You are better off shopping elsewhere…
Jenny N.
11/16/2022
I am very sorry that we have not been able to provide the harness that will work for you. I wanted to let you know that there not would be a restocking fee charge for sending back the harness. You would receive a full credit for it.
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Show More Reviews
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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.