bing tracking image
  1. Custom Fit Vehicle Wiring
  2. CURT
  3. Custom Fit
  4. 4 Flat
  5. Trailer Hitch Wiring
  6. Powered 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 # C56273
Retail:$101.95
Our Price: $59.48
You Save: 42%
Custom Fit Vehicle Wiring

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

Add to cart
In Stock
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Need help with installation?
Locate installers near me
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. 1-800-940-8924 to order CURT custom fit vehicle wiring part number C56273 or order online at etrailer.com. 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.
  • All Info
  • Reviews (27)
  • Q & A (0)
  • Photos

CURT Custom Fit Vehicle Wiring - C56273

  • Custom Fit
  • 4 Flat
  • Trailer Hitch Wiring
  • CURT
  • Powered Converter

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:

  • 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
    • Locate connection points in rear cargo area
    • Plug in T-connector
    • Run hot lead to car battery
  • Includes a powered tail light converter that connects directly to your battery to avoid overloading your vehicle's electrical system
  • Constructed using surface-mount technology (SMT) for consistent, reliable performance
    • Maximizes trailer light yield and intensity while producing minimal heat
    • Ensures superior operation in rough road conditions
  • Comes with dust cap for 4-way flat connector


Specs:

  • Maximum amperage:
    • Stop/turn lights: 3 amps per circuit
    • Tail lights: 6 amps per circuit
  • Limited 1-year warranty


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 tail lights. You will have to remove all trunk floor coverings, storage trays, and the scuff panel to access these connection points. Once you've plugged in the T-connector, run the hot lead to your car battery. 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.


Powered Tail Light Converter with Surface-Mount Technology

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.


Curt SMT Circuit Boards

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.



56273 Curt T-Connector - Surface Mount Technology - 4 Wire

Installation Details C56273 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 - C56273

Average Customer Rating:  4.9 out of 5 stars   (27 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. Powered converter reduces strain on wiring system and is made using SMT to ensure superior performance.

by:
2017 Ford Focus

After having 2 kits sent by the largest supplier AM.... that were packeged with the wrong kits but marked ford focus hatchback, i contacted Curt and they suggested another supplier. Your profesionalism and tracking is second to none. Finally got the right one. I will be using you in the future



by:
Ford Focus

The hitch wiring went in great. I put in a thicker spacer 3/8 inch between the frame and the hitch which gave a better clearance from the plastic bumper cover and the receiver it went very well. The electrical wiring went well with the directions given. I have a focus ST and a pull a trailer with a zero turn 60 inch Ferris mower and it works very well.



by:
2016 Ford Focus

The hitch is fairly straight forward and easy to install. The instructions are OK - not great - just OK, BUT... The etrailer videos for the hitch and wiring harness were BRILLIANT. My only criticism is that I found them by accident - I didn't realize they were out there. That being said, it took me less than 30 seconds to find them. They were much better than the printed instructions. I had a tablet out set next to me and it literally walked me through the painless process. Thanks! So, all in all, this was a very affordable and easy process thanks to etrailer.



by:

Great harness. Clipped into my existing vehicle harness with no issues, trailer lights work great

Matt

5/17/2020

Still works perfectly



by:
2015 Ford Focus

Not a product review, I'll need some time to make that determination. As far as service goes, it seems like these guys are doing it right considering the niche they are in.
The online search/selection and order process was easy and efficient. I received an order confirmation immediately, and a shipping confirmation on the same day. The package arrived when they said it would. I also received a personalized delivery confirmation email which is always appreciated.

As of this writing I have not yet installed the tow bar and wiring kit for my 2015 Ford Focus ST, but my experience up to this point has been excellent.



by:
2018 Ford Focus

I installed the trailer hitch wiring in about 3 hours. It was very easy to do after watching the great video provided with this product. No problems...everything worked like a charm.



by:

Great all in one wiring harness. Took longer to install than the hitch. Could just be thrown into the spare tire well, but for a clean tidy install it takes a bit more time and effort. Take off your interior panels and do it right, you'll be much happier.



by:

Everything I ordered came in with no issues. Wiring kit, receiver hitch and 2 balls. Quick shipping and no problems. Thank you!



by:
2015 Ford Focus

Good instructions, worked the first time

Rick K.

1/16/2018

Both the hitch and the wiring harness are fine. I had trouble connecting the wiring harness because I did not pay close enough attention to the pictures in the instructions.



by:
Ford Focus

Great product that works well, it’s just a pain to install. See my review of the Ford Focus RS Curt hitch as well. Definitely remove your lights even though it doesn’t say to.



by:
2017 Ford Focus

The product was at my door in less than a week fit perfectly worked just as described very happy with their service thanks a lot etrailer



by:
2018 Ford Focus

etrailer makes me fell like they care and then prove it by their actions. One awesome company.



by:

Installed perfectly. Did not run the positive wire under the car, instead I ran under trim along driver side of the interior and through a plug on the firewall about pedals. I do not like the idea of that wire underneath a new car.



by:
2016 Ford Focus

Great company. Arrived on time. Very easy detailed instructions. Will buy from them again



by:

Great product worked as it should. Came on time as promised ! Communication was great tracking the shipment
Will do buisness again



by:
2015 Ford Focus

Product arrived within 2 days wow, The package was exactly as described and had video clips showing how to install. Great company, excellent service.
Thanks



by:

Good product, used etrailer several times, always good.



by:
2016 Ford Focus

Works great on my Ford Focus ST. It's not trivial to run the wire up to the battery, if you don't have a lift, but it can be done with a little time.



by:

got it and haven't instaled it yet



by:
2016 Ford Focus

Easy to install. Excellent value. Highly recommend!!



by:

great product and fast service



by:



by:

everything looks right



by:



by:


25
27
Show More Reviews

See what our Experts say about this CURT Custom Fit Vehicle Wiring

  • Trailer Hitch Receiver Fit For 2016 Ford Fusion SE Hatchback
    Hey Paul, good question, and I checked directly with EcoHitch for you, and their hitch is only for the RS. There is an option for a hitch that fits your 2016 Ford Fusion SE Hatchback, and has a completely hidden crosstube, just like the EcoHitch. What you would need for that is the Draw-Tite, at the following part number: - Draw-Tite Sportframe Trailer Hitch Receiver # 24872 The # 24872 has a 1-1/4" receiver, so not a 2" receiver like the Draw-Tite, but on the plus side does not require...
    view full answer...
  • Trailer Hitch Receiver For 2017 Ford Focus ST Hatchback With Dual Center Exhaust
    Hi Daniel, Definitely smart to check and I can indeed verify the trailer hitch that fits your 2017 Ford Focus ST hatchback with the dual center exhaust tips. The correct hitch for you is the following: - Curt Trailer Hitch Receiver # C11431 I added a photo for you a customer was nice enough to send in of this hitch on their Focus ST hatchback so you can see how it will look on yours. I also wanted to add, in case you needed a 4-flat trailer wiring harness, the right fit for your Focus...
    view full answer...
  • Trailer Wiring Harness for a 2017 Ford Focus RS Hatchback
    Yes it will; the correct trailer wiring harness for your 2017 Ford Focus RS Hatchback is the Curt Trailer Wiring Harness # C56273.
    view full answer...
  • Does Power Wire of Curt Trailer Wiring Harness for 2017 Ford Focus RS Hatch Have to Run to Battery
    The reason you need to run the power wire of the Curt T-Connector trailer wiring harness part # C56273 up to the battery of the vehicle is because that method of powering the converter is what keeps the wiring of your vehicle safe from trailer shorts. This is the circuit that powers the trailer taillights so if there was a short on your trailer wiring you wouldn't have to worry about it potentially damaging your vehicle wiring. So I understand the temptation to try an easier route but we...
    view full answer...
  • Will Curt T-Connector Fit 2015 Ford Focus ST Hatchback
    I spoke with my contact at Curt and he confirmed that the Curt T-Connector Vehicle Wiring Harness # C56273 that you referenced is a fit your 2015 Ford Focus ST Hatchback. This wiring harness will plug into your Focus's existing wiring behind the taillight housings. The black power wire for the harness's converter box will need to be routed to the vehicle's battery. I have linked the installation instructions for you. If you need a trailer hitch for your 2015 Focus ST Hatchback, I recommend...
    view full answer...
  • Will the Curt T-Connector # C56273 Fit a 2018 Ford Focus Hatchback
    Yes, the Curt T-Connector # C56273 is confirmed to fit your 2018 Ford Focus Hatchback. The installation instructions have been linked for you to check out.
    view full answer...
  • 4-Pole Trailer Wiring Harness for 2016 Ford Focus Hatchback
    If your 2016 Ford Focus Hatchback is the ST model you can use the Curt 4-pole wiring harness kit # C56273. This kit include custom-fit connectors to allow plug-in installation at your taillights. The only wire to be spliced is the 12V power wire; an article is included to assist you in routing that one wire. An install video is linked.
    view full answer...
  • Correct Curt T-Connector for a 2014 Ford Focus ST
    The Curt T-Connector # C56273 that you referenced is not a fit for your 2014 Focus. For your 2014 Ford Focus ST you need the Curt T-Connector # C56140 instead. Since wiring is typically used with towing you will need the trailer hitch # C11431 and then the recommended ball mount # C45521 with the pin and clip # F-4 as well as either a 1-7/8" # A-80 or 2" # A-82 hitch ball. If you plan on using the wiring for lighting on a cargo carrier then please note that Curt requires the stabilizer...
    view full answer...
  • Troubleshooting Trailer Wiring 4-Way Where Running Lights Don't Work
    First thing to try is clean the pins of the 4-way on your Focus and trailer. Most likely it's just a bit of corrosion that needs to be cleaned off that's preventing the circuit from being connected. Typically sandpaper takes care of this the easiest. To test the converter box you can use a circuit tester like the part # PTW2993 to test for voltage going into the box and coming out with the running lights are on as well.
    view full answer...
  • Recommended Hitch for a 2017 Ford Focus RS Hatchback
    The EcoHitch Hidden Trailer Hitch item # 306-X7355 weighs 46 lbs and does include all the hardware you'll need for installation. It's a pretty simple installation the hitch's cross tube bolts onto your Ford's frame behind your rear bumper. This is why there isn't much hardware included. This hitch is custom fit for the Hatchback RS model of the 2017 Ford Focus. If you are planning on towing you will also need a wiring harness item # C56273 and a ball mount kit item # C45534.
    view full answer...

Do you have a question about this Custom Fit Vehicle Wiring?


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Jeff D
Installed by:
Jeff D
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
Kristina F
Employee Isabelle B
Updated by:
Isabelle B
Employee Kristen H
Written by:
Kristen H

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.