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Wiring for towing doesn’t have to mean cutting into your vehicle’s factory wiring. The Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector plugs right into existing connectors, giving you a clean setup with no splicing. It’s built as a plug-in harness, so it connects directly to the vehicle’s wiring for a simple and reliable install.
Some vehicles can’t handle the extra amperage from trailer lights on their tail light circuits. This harness uses a powered converter that draws power straight from the battery instead of overloading the vehicle wiring. That setup keeps the factory circuits protected while giving your trailer full lighting function every time you tow.
The built-in 4-flat connector gives you what most trailers use—running lights, turn signals, and brake lights. It’s a standard connection that makes hooking up a small trailer or utility hauler quick and easy.
Designed as a visible, plug-in trailer hitch wiring harness, this setup routes neatly to the back of the vehicle. It keeps everything organized and easy to access when you’re ready to tow.
Customer Satisfaction Score:
96% were satisfied with this product
4% of customers were not satisfied
Ratings & Reviews
Works great
Great product, was delivered about an hour ago and I installed it in about 30 mins without any issues.
The website was easy to use, and we found the right product easily. Delivery time was very reasonable. The part is now installed and works great. We are very happy with the purchase and with the company in general.
Incredible!! I couldn’t believe how exact and easy this intimidating looking kit installed. It was so much fun to actually do something that went as it was supposed to GREAT PRODUCT!!
Went together just like on youtube. The battery supply cable was plenty long and all equipment was included. It was very easy.
Everything went together as shown on the video. I only watched it once and did the installation from memory. Great product at a good price.
The wiring harness went on easily and the video was helpful.
Great hitch. etrailer sells only the best. Hard to beat…
Wiring harness fit and works perfectly. Directions well written and helpful. Online video was also a huge help. Nice to keep it in the trunk, out of the weather, and away from corrosion, when not in use.
Tom S.
3/16/2018
Still performing very well. No complaints.
The wiring harness was custom made to fit my Subaru Legacy. Routed the power from the battery into plastic tray under car and up through existing hole, behind left rear wheel and into trunk. Everything installs behind paneling inside the trunk, out of the way when not in use.
Love your site. Easy to find what you need and pay for it.....great job....easy works for use old types.....Shipping was fast and the item got to Olympia, Washington very fast. Good job all around. Will use your site again for sure. darrel w
Eugene W.
8/14/2018
Worked right up to the point the car was totaled from the rear. Good product.
Info for this part was:
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Roberto
10/8/2022
Continues to work perfectly. Forgot it existed! Perfect.