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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:
Specs:
Installation
This custom-fit T-connector plugs into your vehicle's wiring harness, which is located either behind the driver's-side and passenger's-side tail light assemblies or behind the rear bumper along the frame rail.
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 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.
California residents: click here
Fairly easy to install the receiver by myself. I cheated and used a motorcycle lift to help get it in place and hold it.
Was purchased for my T100 and it clicked right in to OEM harness. Was able to wrap it to existing harness for a clean look, and trailers now show both running and brake lights.
The t-connector harness is very easy to install. The instruction photos could be a little clearer though.
My ítem was shipped the same day. I just spent 15 minutes on the installation. Really easy. Great service and product.
So easy I did it from the ground. I found it is not necessary to unhook all of the connections and remove the taillights. It took about 30 minutes
Mike 
8/28/2024
Still working as expected very high quality
Easy fitment and good wire length allowing for protected box placement.
That's my kind of wiring. I shopped around for installing trailer wiring. Prices were as high as $100. ! This kit for my Toyota Tacoma cost $35. I loosened four bolts, drilled in a ground screw. Plug and pull wire and done. I was able to pull the wired to the far side throughout the hollow receiver hitch. Didn't even need the zip ties. Great company. Thanks
Super easy install. Was a breeze and didn’t take too much effort wise. Ended up covering the runs of wire with wire loom for added protection. Added this to the 4 way flat adapter and mounting bracket so I didn’t have to leave the connector hanging off the receiver.
could have come with better instructions. Watched you tube for installation instructions.
Received and installed by my garage within two hours. This harness eliminated the need to cut and splice into tail and brake lights. Have not tested but confident in your products!
Allen
3/19/2024
Excellent. Basically a simple installation.
This was a very easy install and only took 30 Mins.
So far good thanks. Do you all make one for a 2000 year model pick up truck
Fit vehicle perfectly. Good written instructions plus a very helpful video showing the entire install, including how to separate the factory connectors.
Perfect fit,clear instructions,fast shipping. Return customer for sure.
Easy install, great price and it works wonderfully - thanks George!
Andy
8/2/2024
Ive only had to use it a couple of times, but it works great! The exposed portion of the harness where the connector is has been very resilient to the nasty weather where I live.
My pickup had a new frame installed due to a manufacturer's recall. During the installation the old wiring for the trailer lights was taken out. I didn't want to pay for a commercial company to reinstall a wiring kit after I saw how easy this system was for installation. The Curt custom fit vehicle wiring was as easy to install as claimed. I have limited mechanical experience so I would say anyone who can read directions and has a few tools can do this.
Lee E.
3/5/2018
Im still very pleased with it and would recommend it to others.
I purchased a wiring harness a year ago for my 2013 Toyota Tacoma Pickup to haul my utility trailer. The installation instructions were very simple and clear. I installed the harness within an hour without any problems. It's working great when I need it and would recommend this product and any other from Etrailer. I have purchased many items from Etrailer thru the years and find the videos and other instructions very helpful with the installation. Great prices, great products and above all great support!
Gary L.
10/21/2017
its still working great. No issues at all
Wire length was perfect . Plenty of slack . The directions are inside the package and are simple . Vague on a few little parts but if you search out the answers it’s simple . The lights on my truck worked after installing just as they did prior to the job and I will test the u it tomorrow when my tester arrives , or if I just back up to my boat . I loved the included zip ties to get the wires neat , and the whip is long enough to put literally anywhere . I’d buy this again for sure . The connectors snapped in solid as I would expect for a quality product . So far a great purchase .
Scott
1/3/2022
This product failed and it was a pain in the ass to get it all worked out as far as the warranty thing goes … understandable since people scam all the time but man , I wasn’t too happy about the process . The new one works fine and has worked fine and I will for sure be getting a backup unit so if it fails while I’m on the road I’m not stranded because of an easy to fix plug and play part . It was easy to install for me … it seems to be working great at this point and I take my trailer for a drive a few times a month to keep it all working .
Product fit perfectly and took about an hour to install. I purchased 15 feet of wire loom to protect the cables, but everything else was included. I used dialectric grease on all electrical plug-in connectors to ensure years of service.
David
7/12/2023
Wiring has been great. It was a perfect fit.
Excellent product. I installed trailer hitch and trailer wiring harness by myself 2.25 hours. Etrailer 1st class. Fast shipping. No complaints at all.
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John G.
4/3/2015
Excellent. Moved from Georgia to SC with truck pulling UHaul. Did Great!
Everything fit and worked as expected. It was for my Toyota Tacoma. Zero issues as expected from etrailer. Their products, order process and support are very professional so I like dealing with etrailer over the years.
David
7/3/2023
A year later update. No issues when bought and they have been working fine since. The install was easy.
This harness was a snap to install on my 2014 Toyota Tacoma. Instructions and video were dead on. You will be pleased if you purchase this product. Everything went seamless from order to delivery.
Michael G.
8/11/2015
All trailer lights operational!
Quality products, installation was well explained and accurate. Competitive pricing & quality products-- highly recommend ETRAILER!
Great quality, easy to install and does not compromise the wiring system by having to cut and splice wires or cutting into the wires. Best way to go. As always etrailer delivers a great product, on time and at a good price. Thanks etrailer.
Michael
5/25/2017
Product is working out great. Couldnt have been simpler...unless someone else did it.
I ordered hitch for my tocoma and wiring harness . every thing fit and worked.
thank you
John H.
6/20/2017
every thing is working fine . thank you
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Kenneth
6/12/2025
Still functioning as it should.