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A lot of wiring kits mean chasing wires and splicing connections. This one skips all that. The Curt T-Connector plugs right into your vehicle’s existing wiring behind the rear panels, giving you a 4-flat trailer connector without any guesswork. It’s built for a quick, clean install that most folks can handle with basic tools.
The included power lead connects straight to your battery through the supplied fuse holder. That setup keeps trailer lights from overloading your vehicle’s wiring and helps prevent dimming or flickering signals. The converter uses surface-mount technology (SMT) for better heat control and consistent performance over time.
Once installed, this harness gives you a standard 4-way flat output for running lights, turn signals, and brake lights. It’s the connection most small and mid-size trailers use, so you’re ready to hook up and go.
The harness includes a cap to keep out moisture when it’s not in use. For extra protection, applying dielectric grease on the terminals helps prevent corrosion—especially if you live near saltwater or humid conditions. That little bit of care keeps your connections clean and dependable every trip.

Customer Satisfaction Score:
92% were satisfied with this product
8% of customers were not satisfied
Ratings & Reviews
Good quality product for affordable pri ce
The right part at a good price and arrived very quickly.
Working great
Perfect item
Very nice hookup
Easy peasy!! I did not run the wire to the battery and will be using the 12 volt in the trunk for now.
I like it
Easy to install and works great.
Hitch went on perfect and video’s were great to help. 2016 VW Tiguan R-Series TSI AWD
Very good kit and the video to go with it are simple.
Very easy install but I have done a few
it woks perfect, thank you, very clear and easy to follow directions. The video was super!
Order arrived 3 days early!
I've Had nothing but excellent customer service from them on two separate orders so far.
Fast delivery. The Harness was easy to install and good directions to follow.
Good instructions and a good product. Fit perfectly
it was easy to install with detailed instructions and worked great.
I was impressed with what a relatively simple job putting on my hitch was for my ‘12 Tiguan. All parts in the kit were intact, and instructions were clear. How to get the wire up to the battery could’ve been clearer.
Worked well, some connections took some trouble shooting. Ended up being poor grounding.
Overall good, would buy again for next trailer project.
Fast shipping, great product, clear ins tructions.
Trailer wiring harness was easy to install and was well made.
After it was finally installed, it is great, but very vague instructions on removing the taillights, (had to go online to find out how) and no info on removing the plastic trim panel fasteners without breaking them, (waiting for new ones to come from [online retailer])
Installation was a snap and it has been working well for me on my 2016 Tiguan! Have used it several times while towing a small utility trailer. I opted to pair this with an “OEM style” power wire/fuse holder purchased elsewhere… but that was just for cosmetic reasons, I’m sure the wire/fuse holder included in this kit would have worked well too.
Easy to install and the instructions were spot on! I have used numerous times and still love the ease of use! Plus I keep the connector in the car when not in use so it will last longer!

Paul
5/8/2025
Amazing! I have used it in every weather condition the Midwest can throw at me and the connector still looks brand new. A superior product!
I’m moving across the country and realized 3 days before my move date that I forgot to order the wiring harness! I ordered it immediately and paid for 2 day shipping. It arrived right on time, no delay at all. I installed it immediately! Everything in the trunk was relatively easy, but routing the power wire to the battery wasn’t fun at all since I don’t have a lift or jacks! However I made it happen and all is well. My towing lights work great and I couldn’t be happier with etrailer’s products! I have their hitch and wiring now. One VW Fanatic extremely happy!
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Spencer
12/5/2024
Still working perfectly!