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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 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 (243 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.I purchased a trailer hitch and a T-One Wiring Harness. I received the items that Ordered and in stalled the on my 2021 Tacoma today. The trailer hitch is of good quality, and was easy to install. The wiring harness was very easy to install, but the directions that came with it were a little vague. I viewed an installation video online that was really helpful. I am completely satisfied with my purchase, and I would highly recommend Etrailer.
Watch the install videos and you can’t go wrong. Hardest part was popping the turn signal modules out on a brand new truck. On the passenger side there are two connectors that couple to each other and not the turn signal module. Routing the power wire was easy- I cable tied it to frame members as much as possible. I didn’t need jack stands to make wiggle room as mine is a 4x4. Remember to heat the splicing connectors to shrink them down to the wires. The adhesive white patch goes on the back of the control module. Allow time for the install- maybe 2 hours- take your time. A fairly easy install even for a 70 year old.
When I first opened the package I was overwhelmed. Then I watched the install video and it became crystal clear. It took about 45 minutes to install the wiring kit.
Much better than splicing into the existing wiring harness. No worry about shorting out vehicle fuses.
Order was very quick and I installed the hitch and wiring harness in about 20 minutes
Heather A - 10/29/2021The instructions were right on point. The easiest trailer wiring installation I have ever done. Everything matched up perfectly…!!!
For the most part, this kit was easy to install. Since it went on a new truck, an alcohol prep pad was all I needed to use the double-face tape for the module. Removing the taillights and connecting the T-connectors was a breeze. The part that was like work was routing and securing the hot lead that runs to the battery, but maybe I'm just getting lazy. Nice kit so far.
Installing this wiring was super easy. Just be a little patient and plan your preferred wiring route. Basically a plug and play deal. The lights all worked perfect the first time. Plenty of wire length to reach all points without stretching. I think one possible improvement would be a better mount for the four-pin connector than sticky tape.. That being said, the connector is still secure. Great wiring choice!
Easy to follow instructions, very nice quality of materials, everything that was needed to do the complete job.
Good price , fast free shipping I am a very happy customer and would definitely recommend you to anyone
James I - 11/14/2021Relatively easy to install. Ample wire for my needs. Works as it should. Well worth the cost versus having it done by a shop!
Installed this wiring harness this afternoon. It is a good product, but I have to say that on the 2021 Tacoma I have the wire going from the right tail light to the left tail light was barely long enough. Another 6 inches would have been great. Also there are too few zip ties to safely secure the wires and keep them away from hot spots and sharp metal edges. I had to supplement the ones provided with quite a few from another project.
I want to say Thank you, shipping was delayed because the address I used, it couldn't be shipped to P.O. Box, to which I provided a physical address. I am happy with the shipping time, and I really love the product, it looks solid and durable, nothing cheap about it. The company kept me posted through the whole shipping stage, even after I received my package. I rated excellent, if you're looking for quality and great customer service I recommend etrailer.com. I will be posting pictures this weekend, once I install it.
Excellent. I ordered this on a Thursday--I did not think it would make it in time for Father's Day. It arrived in time for the 'day'! Thank you! My husband is thrilled!
My package arrived fast, the installation was great, I am very satisfied with my products, thank you!
Works great east to hook up. Watch the video and you won't need the instructions.
It fitted perfect!
I ordered this along with a Draw-Tite receiver hitch for a 2016 Tacoma SR 2.5L so that I could occasionally pull a small utility trailer. No factory trailer attachment options were available from the factory so this was the next best thing. Etrailer had videos out regarding the hitches and the trailer wiring options for the Tacoma before I ordered the vehicle which was very helpful. After I had the vehicle for a year or so I finally ordered the hitch and trailer wiring. The products shipped quickly and arrived promptly. The installation instructions were clear. You will need to run a 12v hot lead to your battery so it will take some time to install but it's pretty simple. The kit includes some wire ties but you will need more to do a tidy job. I also purchased some plastic wiring loom/conduit locally for better protection. I mounted the control module in a different location than what the etrailer video shows. I was able to mount it in the driver side taillight well directly behind the light assembly. It was tight but I thought the location offered better protection. After installation I decided that I didn't like the trailer wiring plug hanging under the vehicle so I found the Hopkins 41144 vehicle wiring kit fit in the bumper like from the factory. I simply bought a spare 4 prong trailer plug and with some crimp on connectors attached it to the Hopkins 4114. Now the truck looks factory and the trailer wiring is better protected.
Wiring is never a fun task but this was pretty easy and straight forward! Everything you need is included except the basic tool to do the job. You might even be able to score some extra zip ties out of the deal.
Great product, instructions say 10 minutes but if you're like me it will take at least 30 minutes. Installing was pretty easy, what took a while was running the power wire from the battery back to the taillight. All wires/connectors/zip ties came in box.
Very easy to install. Works great. Fantastic product!
Had my hitch and wiring in two days. Everything went together perfect. Super happy with my purchase. I will definently order from etrailer again.
Great product and easy to install!
would not buy from anyone else these guys are great just try to go to a trailer hitch shop and see how you get treated then try etrailer and see the difference you order you receive very fast and you install your self or simply ask a good mechanic shop to install it if you are not familiar with wires etc and in addition etrailer will guide you thru the process over the phone or online never had a problem out of my many jeep projects nor trucks and I am only a house painter who hates assembling stuff my current hitch and huge wire assembly was installed by a tire co in 30 minutes like factory for $100 hitch shop wanted $375 and they would`nt do it unless they welded it h*ll no on a $ 60.000 truck it bolts on perfectly tx again george
Easy installation and great video
I needed a harness for my 16 Tacoma and didn't want to splice any of the existing wiring. This fit the bill!
Everything fit perfect and if I ever wanted to remove it the stock connectors are still there. Directions were easy to follow. It came with enough zip ties to keep the wiring secured and out of the way. The plug feels solid and has fit tight with the UHaul trailers I've towed. The connector cap stays on well and as a bonus acts as a loop to keep the harness connected to the hitch.
I recommend!
Installation wasn’t very difficult, it seems well constructed, and works great. I managed to install on a 2019 Tacoma without lifting the vehicle. The trickiest part was routing the line from tail light to battery, but the videos helped a lot. I wish I had mounted the control box a bit lower in the tail light box, as the wire between tail lights doesn’t have a lot of excess length. My first try routing that line didn’t quite reach, but I found a more direct path on the second try. Be careful to avoid any rub points against metal edges when routing wires.
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