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Wiring a trailer can be a hassle, but this Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector keeps it simple. It plugs directly into the vehicle’s existing tail light wiring, so there’s no cutting or splicing needed. Once connected, it gives you a ready-to-use 4-flat output for running, turn, and brake lights.
This harness uses a powered converter that draws power directly from the vehicle battery through a dedicated 12-volt line. That setup keeps trailer light power separate from the vehicle’s tail light circuits, which helps prevent overloads or interference with sensitive electronics. It also means your trailer lights get consistent power even when loaded with LED lighting.
LED trailer lights can trip up some wiring kits, but this one is confirmed to be compatible. The Curt T-Connector #C56214 sends clean signals for turn, brake, and running lights so LED trailers perform just like they should. There’s virtually no extra amp draw on the vehicle circuits, making it a solid match for modern lighting setups.
Each side of the harness is clearly labeled with color-coded wires—red and yellow on the driver’s side, green and white on the passenger side—for an easy match-up. A good ground connection to clean metal ensures everything works right the first time. Once the connectors click into place and the ground is secure, you’re ready to hook up and tow.
Customer Satisfaction Score:
97% were satisfied with this product
3% of customers were not satisfied
Ratings & Reviews
Easy to plug and play. The longest part was routing the battery wire underneath the car. Overall it worked very nicely on my 2014 Chevy Cruze.
The wire harness was complete and made of quality material. Installation was harder than originally expected. Online video was very helpful.
Great price..quick shipping...easy install..and great customer support...
Very happy with the wiring harness. Easy to install and works great! Really enjoy doing business with etrailer!
Recieved product on time and in an excellent package. Installed VERY easliy and in accordance with instructions/video. Love my unit.
I have a 2015 Cruze Diesel. This product came quickly, was an exact fit and worked perfectly. The instructions and video were excellent. I have I spent less than 3 hours in total on the install. An hour of that was "scouting out" the run for the battery power lead. I looked at both routing inside the cabin and underneath the car. Decided to go underneath and ran along the emergency brake cable.
A bit tedious to install, at first. Make sure you watch the Curt installation video so you know what tools you’ll need for the job. Good quality wiring kit. Tested it after installation and all the connections worked the first time
Ordered drawtite hitch and wiring harness. Price was good, service was excellent. Harness and hitch will be installed by Mieneke in the morning. Car is a 2015 Cruze LTZ.
The trailer wiring harness C56214 is awesome easy to install matter of fact my two great nephews 11 and 10 yrs. old installed most of it couldn't ask for a better product thanks curt
Trailer hitch kit bolted on no problem and wiring kit the same.
Would recommend both. Fast and easy!
A year later it still works... I threaded the power wire from the battery through the car cabin rather than under the car. I feel that the wire is less prone to damage. It was also much easier to do it that way on the diesel Cruze because of the body panels under the car....especially since I do not have a lift to work under.
The wiring harness was pretty easy to install and is working well. Note that you will need the ability to raise the vehicle for access, and you may need to adjust the routing of the wires from the engine compartment to the back of the vehicle. Online video instructions were a big help.
The wiring harness was a challenge to install. The connectors supplied by Curt fell apart or the wires fell out. There are no extra parts so I would advise having connectors on hand prior to starting.
This is not a reflection of etrailer. etrailer provided the parts timely and did all I expected them to do.
Fast Delivery!
I watched the video on installing the kit when I ordered it.
Installed the kit 3 days later with no issues.
Excellent video, very helpful.
Excellent fitment and easy to install! Make sure the ground contact is good, used a bolt instead of small self tapping screw supplied, Also used shrink/weatherproof crimp fitting over the supplied hardware for corrosion protection. Plug and play Great product overall!
I've done plenty of electrical installs and I must say that this one is one of the easiest. The hardest part was running the dedicated power wire to the battery but only because I wanted it ran properly and be protected against the elements. I ran mine through the cab and hid everything. I initially thought the harness was a bit pricey but once I seen the quality I was satisfied with my purchase.
Haven't installed the trailer hitch on my 12 Chevy Cruze yet but received everything I had ordered quick and all in one piece. My Curt hitch was in great shape and looks like a very easy to set up. Overall very happy with the product and service I have received.
So this is 10x better then cut and splice into my factory Harness like the old days. Literally plug the factory brake harness into the converter box, sand a little area for the self tapping screw that’s holds ground wire, (the hardest part of install) run the power wire from battery back to trunk. I’m a normal DIY guy and this made child’s play of wiring, a super clean and easy install. For 80$ it works perfectly and gets rid of body control module problems. The curt [video] page also had my Exact car and kit being installed with clear and easy to follow steps. Definitely worth it.
I watched the wiring video and installed the harness. The hardest part was running the power wire from the back of the car to the battery. I put the power wire in a wire loom to prevent bare spots from shorting out and ran it through holes in the frame where I could.
Delivery was quick. Installation was pretty easy. Hardest part is getting the power wire from the battery to the trunk. I used the video on the etrailer website to install the hitch and then I found videos [online] for installing the wiring.
I will definitely use etrailer again.
I ordered the hidden hitch and wiring harness for my 2014 Cruz. The hitch was on in less than 30 minutes after opening the box. Easy install, well thought out design didn't even require lowering the muffler.
Wiring kit was a bit more work, but that's to be expected when you must take apart trim and run wires from front of car all the way to the back. Not technically difficult, just a PITA. Excellent fast customer service and good pricing. I am a repeat customer for good reason. Thanks guys!
Etrailers products always exceed my needs. I have used them for my past 3 trailer set ups and will continue to use them. Their customer service is excellent. The trailers hitches are so easy to install too! 10/10 would definitely recommend.
The hitch and all ordered accessories arrived early and in excellent shape. Well packed.
Since I have not installed the hitch yet I can't comment on ease of installation. But it appears to be quite straight forward.
Roger P.
8/21/2016
We are enjoying our hitch and wiring kit. I did hire the installation by our local shop to make sure it was done right. I especially like the longer cord on the wiring kit. The wire was too short on the last car I had. Its nice also being able to store it in the trunk to keep it from rusting out.Would recommend both of these items to anyone looking for a hitch for a 2014 Chevy Cruze.
Just A++++++++++++++++
Guys, you are the best
Victoria H.
3/20/2025
Thanks Mj, If we're the best, you're the bestest!
Installed on my 2012 LT Cruze with RS package. Excellent product. Only been installed for about a week now so i don't have longevity testing. Installed it myself. I've wired speakers for 2 different cars before. First time doing trailer wiring harness. It was easy, I just took my time to do it right. Instructional video shows to run in under the car (exposed to elements). I decided to run the power cable under the driver side thresholds through the firewall up to the battery. The hard part was the firewall as usual. Check youtube for that. Seems to be a quality product. Way easier then trying to splice into the OEM wire harness. Forgot to get pictures during install, but the supplied etrailer video covers the important parts.
12 G.
9/4/2018
Thanks for following up! The hitch and wiring harness have worked great! I just used them to complete a 3200 mile road trip pulling my dirtbike from MO to ID. Just this weekend I pulled a friends Yamaha Bolt to his new house 400 miles away. Couldn’t have asked for a better product or easier install!! If I ever need trailer supplies in the future, you’ve got my business.
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Tim C.
10/15/2018
Excellent