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  1. Custom Fit Vehicle Wiring
  2. CURT
  3. Custom Fit
  4. Trailer Hitch Wiring
  5. 4 Flat
  6. No Converter
Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

Item # C56027
Our Price: $26.52
You Save: 41%
Custom Fit Vehicle Wiring

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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 - no cutting, splicing or tapping required. 1-800-496-5010 to order CURT custom fit vehicle wiring part number C56027 or order online at Free expert support on all CURT products. Great prices and Fastest Shipping for Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
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  • Reviews (129)
  • Q & A (0)
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  • Why etrailer?

CURT Custom Fit Vehicle Wiring - C56027

  • Custom Fit
  • Trailer Hitch Wiring
  • 4 Flat
  • No Converter
  • CURT

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring - no cutting, splicing or tapping required.


  • Provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights
    • Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately)
  • Connects quickly and easily - no cutting or splicing of wires
    • Locate connection points either behind tail lights or behind rear bumper
    • Plug in T-connector
  • Comes with dust cap for 4-way flat connector
  • Limited 1-year warranty


This custom-fit T-connector plugs into your vehicle's wiring harness, which is located either behind the driver's-side and passenger's-side tail lights or behind the rear bumper.

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.

56027 CURT T-Connector - 4 Wire

Installation Details C56027 Installation instructions

This Product Fits The Following Vehicles

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - C56027

Average Customer Rating:  4.9 out of 5 stars   (129 Customer Reviews)

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring - no cutting, splicing or tapping required.


Excellent. Easy to install. However, learned to not disconnect the battery without some form of saver because started having issues with the car computer(s) shortly thereafter, i.e., blend doors, traction control, and break warnings. Happy with the product, just not the problems after installing.


Trailer hitch and wiring harness was top quality and I will purchase again if I ever need another one

2010 Chevrolet Traverse

Easy to install on my 2010 traverse. Plenty of wire to route them out of the way and tie them up. Took less than ten minutes.

2011 Chevrolet Traverse

Excellent product fast shipping and easy to install in about 20 minutes


Exactly. Easy to install and connect.


arrived in great time


Worked as advertised.


Really easy to install


Super easy to install. I've never done wiring on a car before so I was a bit worried at first. But after watching the installation video provided from etrailer and going at it myself, it was a breeze and I laughed at how worried I was. To this day, I have never had an issue with it and it's been through a year of being used countless times.

2011 Buick Enclave

Fantastic! Simple install. Thanks


I am very happy with your wiring harness. It was very easy to install and your video was very easy to understand and informative. Thanks

Still works great no problems
Harlan M - 05/20/2018

2009 Chevrolet Traverse

Thank you for making this trailer wiring harness easy to install, after watching the video, it was very easy to install using a guide wire to feed the wires were they needed to go. It took about 30 minutes total.


The entire wiring took me fifteen minutes. I went to my son in laws house, picked up his trailer that I am borrowing, and everything worked just well. I put the trailer hitch on a few days ago, and all though it took me longer to do than I anticipated (two hours instead of one) I was very pleased with your instructions. It took me longer than I anticipated because I had a very small clearance to get my socket and ratchet past the muffler....on both sides. And I dropped the muffler at the back end, but it only gave me an additional inch to work with. I made the mistake of tightening five of the bolts, and when I went to insert the sixth bolt it did not line up to the hole by a smidge amount. I then had to go back and loosen the other five half way out to give me movement, then get the sixth bolt started into the hole, and tighten all six of them. The slight clearance on the two above the muffler allowed me to use a wrench 1/8 turn at a time. But eventually I got the job done.

Thank you,
Dave Koenders

Chevrolet Traverse

This was the easiest install ever. The hitch bolted directly to the hole pattern on my Chevy Traverse as advertised. The instructions on you tube were as easy to understand as the instructions they sent. The wiring harness is plug and play easy. Two hour install by myself. I recommend this product to everyone. The quality of this hitch is second to none. I am impressed!


So far I haven’t needed to use the wire kit.


Hitch is everything I could want. It was so easy to install took about 30 minutes like you stated on the web. Finish is extraordinary. fit perfect. The wiring harness was also easy to install and of excellent quality. I couldn't believe it got here so fast 2nd day from when ordered. I was able to fit my rear bumper door back on the car hiding the hitch completely from view. The video presentation was so helpful with the installation. Your CEO should be very proud of the well trained, organized and sincere staff representing e-trailer. I will certainly recommend your company to all I know.

2010 Chevrolet Traverse

I had never installed a trailer wiring kit before, but it was a very easy install. It fit my 2010 Traverse perfectly. If I had a question it was addressed in the instructional video posted on the website. I looked at other wiring kits, but they were much more expensive, and you had to buy the 4 pole connector cover seperate (this one comes with one). All around very satisified.

I also bought the mounting bracket (18144), and the hole placement was an exact fit with my hidden hitch (no drilling required).

2011 Chevrolet Traverse

Purchased Curt Trailer Hitch and Wiring Harness for my 2011 Chevy Traverse. Good value and was able to install myself. Would definitely recommend.


I never write reviews but this item as well as the hitch I purchased first were all as advertised, installed as specified and fit perfectly. I hate having to do hitches and wiring because of the usual problems you run into but these exactly as the Dr. ordered and went of without a hitch and much quicker than I thought they would. Thank you for you honesty and promptness both are appreciated more than you can know. My granddaughter thanks you also because grandpa didn't get irritated.



Everything worked out perfectly for me couldn't ask for easier and better service


etrailer products that I have used are
been excellent in all respects.


Works great. Not sure why this was described as excluding LTZ model, I bought it thinking it should be the same, after all they are just taillights. My suspicion was correct, and the harness works good.

2009 Chevrolet Traverse

I'm just your run-of-the-mill exceptionally satisfied customer.

Full disclosure: I'm a cheapa$$. After I found what I wanted from etrailer, I surfed the part numbers looking for a cheaper source. After a few minutes, I asked myself "what the heck am I doing? has put up the money and time in a great website and fantastic how-to videos, and even if they're more expensive, they *deserve* my business - they earned it." So I bought.

Additional full disclosure: nobody was cheaper. Don't waste your time looking.

Oh, the hitch and wiring kit fit perfectly. What else would you expect?

2011 Chevrolet Traverse

Awesome trailer hitch & wiring! Everything was straightforward and easy to install. Great product that makes towing small trailers a breeze!


The wiring harness showed up on time. The installation of the harness was super easy and fast. It installed exactly as the instructions showed you.

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