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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. Powered converter reduces strain on wiring system and 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 behind the driver's-side and passenger's-side rear access panel. You will have to remove all trunk floor coverings, spare tire, scuff panels, cargo tie downs, interior side panels, and tail light. Once you've plugged in the T-connector, run the hot lead to your car battery, which can be found in your trunk on the passenger's side. Connect the lead to the included fuse holder, and then connect the fuse holder to the positive terminal on your battery.
Once installation is complete, the 4-way connector will be stowed in an out-of-the-way location within your trunk.
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. This converter is a circuit-protected, battery-powered unit that bypasses the electrical routes that are used by a basic wiring harness. As a result, there is virtually no draw on your tail light circuits.
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.
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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!
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.

Spencer
12/5/2024
Still working perfectly!
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!
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])
Trailer wiring harness was easy to install and was well made.
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.
Fast shipping, great product, clear ins tructions.
Worked well, some connections took some trouble shooting. Ended up being poor grounding.
Overall good, would buy again for next trailer project.
it was easy to install with detailed instructions and worked great.
Order arrived 3 days early!
I've Had nothing but excellent customer service from them on two separate orders so far.
Good instructions and a good product. Fit perfectly
Fast delivery. The Harness was easy to install and good directions to follow.
Very nice hookup
it woks perfect, thank you, very clear and easy to follow directions. The video was super!
Very good kit and the video to go with it are simple.
Very easy install but I have done a few
I like it
Hitch went on perfect and video’s were great to help. 2016 VW Tiguan R-Series TSI AWD
Easy to install and works great.
Easy peasy!! I did not run the wire to the battery and will be using the 12 volt in the trunk for now.
Perfect item
Working great
The right part at a good price and arrived very quickly.
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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!