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Wiring a trailer can be tricky when you have to splice into factory wires, but this Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector skips all that. It plugs directly into your vehicle’s tail light wiring for a simple, plug-and-play connection. There’s no guesswork or cutting, just solid connectors that snap in place and work right away.
This harness uses a powered converter that pulls power directly from the battery instead of the vehicle’s light circuits. That means the trailer lights get full, reliable power while your vehicle’s wiring stays protected from overloads or shorts. It’s the right setup for safe, consistent lighting every time you tow.
A solid ground connection to bare metal ensures the system works smoothly without flickering or weak signals. The fused power line with a 10-amp fuse and 12-gauge wire protects the circuit from shorts or excessive current draw, keeping both the harness and vehicle safe for the long haul.
Once installed, the 4-flat connector gives you running lights, turn signals, and brake lights for your trailer. It’s built to handle small utility trailers, campers, or boat trailers—everything you need for towing with confidence and visibility on the road.
The wiring harness will not function properly without connecting the included black power wire directly to the vehicle’s positive battery terminal. Do not connect to any other power source. Use only a 10-amp fuse inline. If fuse continues to blow, inspect all wiring for shorts or damaged insulation before replacing the harness.
Customer Satisfaction Score:
96% were satisfied with this product
4% of customers were not satisfied
Ratings & Reviews
Installation was straight forward and took me about an hour. I routed the passenger side tail light wiring before securing the module in the drivers side tail light space. The green wire was long enough as I made sure it was on top of the bumper ledge and trailer hitch brackets after reading the other reviews. It is very easy to route it so it will be to short. I purchased 20 ft of small wire loom for the power cord and secured it with wire ties under the car. It was pretty easy but there were not enough wire ties in the kit. I used about 15 wire ties for a very neat installation of the power cable. I also cut a slit in the rubber grommet in the drivers side tail light well and ran the trailer hook up wire into the car jack compartment. This made the wire a little short but I was able to purchase an extension. For me it is much better to have the trailer wire inside of the mini van rather than trying to find a spot to secure it underneath the van when not in use. Every thing works no problems.
The hitch has worked flawlessly! It is sturdy, dependable, and easy to hook up to. Electric hook up works great also.
Great product. While I did wire it up, I did have my local oil change and car guy slap the receiver up and bolt it in. I am hitting 75, and just don't have the muscle for that anymore....real easy when it was up for its oil change!!!
This is necessary if you order a Towing hitch.
Veryeasy to install and works great
Excellent! Fits perfect with slightest trimming of air dam, as stated in instructions.
Works great!
Great fast service
Quite a challenge to self-install because I installed it on my driveway without any lifting of the frame. I did take the driver side rear wheel off to ease the installation over the axle.
The instructions and a sticker on the power wire greatly stresses the importance of mounting the module in the cabin of the vehicle or somewhere similarly protected from the elements. The way it is made would require using an 1 1/4 hole saw to pass the module through or wire connectors if you pass it through from the inside to the outside. I reviewed the two videos one trailers website. I had to laugh as one guy sticks it right to the hitch and the other guy sticks it in the tail light well. The tail light well was my thought prior to viewing the videos so I felt better about putting it there even though it was clear from the water marks that water does enter the week when it rains or during a car wash. I took a chance. It says it can cause it to start a fire if in contact with water.
I also felt the could have provided additional wire ties to secure the power wire fro the rear to the battery. I purchased more to get it done. I didn’t like running that power wire from back to front but I am not well schooled in the newer LED electrical requirements so I installed as directed. It works fine. My trailer has incandescent bulbs. It seems to power them ok . I haven’t tested in for more than a few minutes. Hopefully I’m good to go.
Victoria H.
3/20/2025
Thanks for taking the time to share your insight Rick! It’s always a bit of a gamble when it comes to water exposure, but the mounting location you chose shouldn't be an issue. This install can be tedious but you got it done, and it sounds like its working fine and is ready for a trip. Keep up posted on how this works long term!
Great service
Easy to install. Works great!
Doesn't fit my vehicle.
Heather A.
5/5/2025
Hi Matt, thank you for the picture. The plug that you will need to plug into is behind the taillight not on the taillight itself. You are plugging into the black plug that you disconnected that gray plug from. Let me know if you need anymore help.
My husband is very pleased with the new hitch & was ESPECIALLY HAPPY about the clear installation instructions on the video that showed him exactly what to do. EXCELLENT. THANKS!!
Service from e-trailer was awesome. I'm giving this product a 4.5. my reasons are personal to me since I was an aircraft electrician for Boeing. I really prefer to have protective sleeving on wiring that may be subject to abrasion,and/or heat. I added sleeving where I could to the harness. Just something perhaps to pass on to the manufacturer.
Very easy to install.
Everything was easy to install. But a year in the reverse light on one side didn’t work and the turn signal was out to. So I disconnected the whole trailer wiring from the main harness on the van and then the lights worked.
works great. easy to install
Install was straight forward and easy.
Fit factory plugs perfectly.
I mounted the box behind the drivers tail light and since my van is a Ram CV, it doesn't have anything in the back, and I found a factory plug for the 3rd row entertainment system tucked in the quarter panel for the 12v power so I didn't even have to run a new power wire for it.
Easy to follow instructions, just take you time.
Wiring kit was great for straight forward install on 2014 Chrysler Town and Country.
The products came quickly and accurate.
Plenty of helpful install instructions.
I would buy again.
Howdy, I installed this on a 2016 town and country touring, when I ran the positive wire unlike the guy showing the video install running the bare black wire I chose to cover it with 1/4 Inch Wire Loom Split Tubing then wrapped it friction tape, I also covered the green wire from left side light to the rite side with 1/4 Inch Wire Loom Split Tubing, I used 1/2 Inch Wire Loom Split Tubing from the base of wire box down to hitch.
Yes the install took much longer than the video but the wires are far better protected from vibration. The only reason I didn't give 5 stars was the lack of suggestion of protecting the wires but again that was my choice.
Heavy duty light kit. Easy to install and works great.
After reviewing what must be a dozen different tow hitches I finally decided on this one for several reasons. First, its custom made for my application, which happens to be a 2011 Town n Country. But there are several years with this configuration. Unfortunately I was alone in my driveway to do this install. But because it was made just for my situation in went right in like it should. In fact all the holes lined up so perfectly I was able to hand tighten the screws back in. Too easy. They also provide how-to videos which are very useful. I bought the light package and it too was a no-brainer to hook up since they've taken most the work out of the struggle of figuring out what goes where. The only problem was in the UPS delivery where they had torn a large cash in the box and the instructions must've fell out in transit since there were none. etrailer's video says to reference those instructions for the correct torque. I wasn't worried tho' as I tightened them real tight and then welded to my satisfaction. And if, like me, you've ever had a hitch come loose out on the road you'll learn to tack those on after you've bolted them up. Either way this was a great fix for my application and I would do it again without hesitation. Good luck!
Lance
5/10/2021
Its working exactly like it should. And really, when you buy a custom hitch made for your vehicle and follow up with a few welds there really is nothing to go wrong. If I get another vehicle and need another hitch I wont hesitate to get it here and I wont have to spend the usual two hours researching the market first.
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Jack C.
5/24/2015
Hi Bob, I would also like to run my flat four connector through the jack storage area on my 2014 town and country but am having trouble routing it. I see the grommet you are talking about and have removed it just to see how I can route the connector. After removing the grommet how do you get into the jack storage ares without doing some cutting?