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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 OEM tow package harness - no cutting, splicing or tapping required.
Features:
Installation
This custom-fit T-One connector plugs into your vehicle's factory tow package wiring harness, which is located in your rear cargo area. You will have to remove the rear threshold plate and interior paneling to access this harness.
Once installation is complete, the 4-way connector will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure.
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: 4.9 out of 5 stars (95 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 OEM tow package harness - no cutting, splicing or tapping required.So far so good. Have yet to trailer anything. Wiring harness is pretty straight forward but takes a little patience taking off panels.
If you have a 2016 MAZDA CX-9 - this kit WORKS. It appears all 2016 Mazda CX-9's have the trailer wiring harness already installed. It is located behind the rear passenger side interior panel - the Tekonsha instructions show you how to get to it. You do NOT need to get a "generic" wiring kit as many of the other responses are suggesting. Just plug this one in and it works. I have submitted pictures below of the installation on my vehicle. I also installed the 76020 Draw-Tite Class 3 Trailer Hitch Receiver which fit nicely.
Nice product and easy to install the "Draw-tite Max-frame Trailer Hitch Receiver" with T-One wiring harness for Factory Tow Package- 4 Pole Flat Trailer Connector...
Great service and Delivery, Justin B. Was very helpful with products, His knowledge and expertise answered All questions. product arrived a day early which was very pleasing and much needed !! Product installation videos made it a snap to install, and wire installation tools that came with hitch hardware made installing bolts in frame so easy. Using a strap to support exhaust was a great recommendation !! Every part fit perfectly and operated as specified. Wiring, Hitch and bracket took me approximately 2.5 Hrs. doing this on my driveway. These components were installed on my 2017 Mazda CX-9 AWD. I did not take any photos because what you see on E-trailers videos is exactly how it looks.
Took about 45 minutes to install. Just follow the installation video and you can't go wrong installing this.
I wish Etrailer would consult every company I shop with on how to create an amazing buying experience. From finding what you need, to installation videos - Perfection!
Followed videos which were for my exact vehicle. The videos are really helpful. Anybody can put the hitch on and install the wiring harness. I probsbly saved $600 doing it myself.
The hitch looks so nice and durable They shipped so fast And the price are fair I will recommend to anyone who is looking for a great hitch
I installed in about 45 min. Very easy to do if you follow along with the video. This is my second etrailer elect kit. Great product!!!
Harness was simple to install, and has worked great for last year.
Perfect match with the vehicle. Plugged right in and works! The installation video provides step-by-step instructions for pulling panels and removing anchors. The electrical installation took less an hour and looks clean.
One year in and this wiring harness is working like a charm. I would recommend it to anyone looking to hook up electrical to a tow vehicle. Instructions were simple with minimal tools required. If I need anything tow related etrailer.com is my first go to.
This kit installed seamlessly on our 2019 Mazda CX-9. The instructional video from etrailer perfectly walked me through step-by-step which was very reassuring, since I'd probably have been a LOT more delicate removing the necessary side panels in the back of the SUV without it. Just like the trailer hitch I purchased, the instructions were spot-on and made installation of this wiring harness an absolute breeze. etrailer has definitely set the bar on installation and support for their products.
truly plug and play. Only hard part was disassembling the interior of the car to get to the factory plug in
Well designed and built.
Easy peasy. 20 minutes taking your time. It was like Mazda designed it. Dealer wanted $600-$700 for receiver and wiring with installation. Out the door for [much less] with etrailer. I'd say difficulty was more like 3 stars.
Perfect fit, good video, easy install
Easy to fit on-line video instructions were very helpful. The included paper instructions were less helpful.
This is in reference to a 2016, Mazda CX9. This comment adds to the 2 previously posted comments. It deals with getting the interior panel to release. There are 2 screws that must be removed before attempting to remove the panel. One screw is at the top of the panel under the black plastic hook.The other screw is under a piece of plastic trim that must be removed where the lower chrome anchor is. Then remove the jack, and the other plastic parts near the jack. Once everything is removed, carefully start popping the trim panel off with a trim panel pry tool. Keep prying until you can reach the plug that part #118278 goes into.
Marty W - 10/07/2017The hitch receiver is easier to install than the wiring harness, but that is only because I hate taking apart all the snap fasteners on interior panels. But, once removed, this simply plugs in and you are good to go. Like in the video, I secured the ground on the 10mm bolt. One tip is to pull out the trays straight up and with some good force to pull out the white retaining pins. Otherwise, you will have to pry them out using a forked interior panel pry bar, like the one in the video. Overall, this is a great product.
R. H - 10/04/2018I had ordered the recommended hitch and wiring install kit through the trailer rental place and found not only were there no instructional videos but the wiring kit they recommended for my vehicle make and model was incorrect. etrailer had the right wiring kit (at a lower price) and the most helpful instructional videos! Will recommend them every time in the future.
Installation and fitment went perfectly! The paper instructions were nothing compared to the installation videos on etrailer. I'm so happy with this purchase!
Watching the installation video prior to installing made the world of difference! I was able to install this within 20 minutes and was very easy. If I was to do this by the directions alone it would have taken 3x as long and would have been challenging!! Way to go etrailer, you guys are the best!! I purchased the bracket to install this outside the car but now contemplating whether to just keep it inside until I need to tow.
The hitch arrived quickly, I installed the wiring myself, this was very easy after watching your video. I had a local company install it, as I don't have a pit or hoist and I am way too fat to squeeze under this vehicle. the installation took 35 minutes. I am extremely happy with the product and the service.
Wiring harness plugs right into factory plugs. The BEST part, the etrailer howto video was perfect. It matched my year and model exactly and give me a very clear, detailed step by step on the installation, showing how to remove and replace all the panels and bits without damage.
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