T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
This item does not fit your vehicle
2003 Toyota Camry
These items fit your vehicle
2003 Toyota Camry
Arrives before Christmas To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
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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 - no cutting, splicing or tapping required.
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 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.
California residents: click here
super easy
Awesome way to show how things are done. Great job guys.
The product was delived promptly and courteously. Great service.
Great product, easy to install, delivery was quick and package well.
Easy to install,prompt shipping and works great.
Easy install with not special tools. Mounts under the car, not inside. Very pleased
Product arrived sooner than expected, installed exactly as indicated in the directions, and works perfectly.
Very easy to install. My 12 year old son acually installed the wiring package. On line video was also very informative.
Ordered new hitch for my Ford Flex, it came in 4 days and was easy to install took less than one hour including the harness.
Thank you for the great service.
This product is well made. The fit was excellent. The only change I would make is in the wire ties that were included to attach the wiring to car. There's really no way to use them. Would have been better to supply some kind of clip to hold wire and clip to bottom of flange along back of car. Otherwise I would recommend this product.
I professionally installed this trailer wire on my Ford Flex 2011. It corrupted my wiring system in 2 weeks. It made my running lights on my Flex to not work at all. Secondly, this product is after market which voids your warranty. The only wiring that the Flex can handle is from the front fuse box. I learned the hard way and had to have this wiring removed from my Flex which cost me an additional $68 dollars. I strongly suggest not using this product and have Ford install your trailor light wiring since it will not void your warranty.
I could not be more pleased with your company. I could have bought the wiring harness from several vendors, but you guys stepped up and did the job. The harness was for my daughters Flex and she is delighted. We try to keep a smallloopof vendors here and you can be assured, you are in the loop.
Product arrived quickly, installed just as the instructions stated. Looks good. It would be nice if the hitch had a bracket for the wiring harness to attach to. So far no complaints at all.
Used this while installing the factory hitch on my Flex. Simple to install, instructions were clear and easy to understand. This wiring tees into the wiring for the taillights. This solution is plug and play- no soldering, etc., required.
Easy to install if you have basic knowledge of vehicle components and Removal of taillights
This wiring harness make the job very easy. Take out the light housing, plug them into the plug and put the light housing back in.
All items came rather quicker than I expected, well packaged. It's hard to damage the steel trailer hitch of this size. NO problems were encountered on the installation.
Very satisfied with the finished product! Having said that I’m extremely disappointed in the condition of the box it arrived in and scratches in the paint. The wiring harness was apparently in a box at one time but when I opened the big box the harness and instructions were laying loose in the bottom of the box and I’m lucky to have recoverd all the parts as there was a 6”x4” hole in one corner of the box. The hardware bag also had a hole in it and washers fell out when I touched the bag. So yes 5 stars for the product but 0 stars for packaging and shipping.
Photos of our T-one wiring harness install this afternoon on our 2012 Ford Flex. Should be comprehensive, but I have a few other photos.
I ziptied to the factory harness where I could, and had to clip the last one of your zipties to get enough slack. Ground wire unzipped a little. Drilled & Dremel'd off the finish, then used "Noalox" between the ring terminal & body, then sealed with caulk. I will add some split-loom later where the trailer plug wiring goes into the backside of the tow bumper. I added electrical tape to the green wire (not shown in photos), and any other place I thought might rub. 4-pin connector just wedged into the factory slot.
Great product for the job it intended for! I highly appreciate it! Thanks
I will be installing it tomorrow
The easiest wire kit to install. Had my 7 year son hook it up for me.
Thanks again. Will order next hitch and wire harness, will tell friends and family about them.
Installation was straight forward and not overly complicated. The hitch itself is very beefy indeed. The plug-n-play wiring for the lights was very simple as well
Overall good product, work as intended. Only thing I would change is the ground eyelet. Im not drilling into tge body of my car for a rust area later in it's life. I added a larger eyelet and put the ground on the hitch mount bolt.
Installation could only have been easier if someone else did it. Instructions were easy to understand and kit had everything needed.
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Edward S.
6/26/2025
It works great. Ive had no problems