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  1. Custom Fit Vehicle Wiring
  2. CURT
  3. 4 Flat
  4. No Tow Package
  5. Trailer Hitch Wiring
  6. Vehicle End Connector
THIS ITEM IS NOT A FIT FOR
2013 Freightliner Sprinter
etrailer Installation
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CURT

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

Part Number: C56028
$92.69
Retail:$125.95
You Save: 26%
Custom Fit Vehicle Wiring
Not Confirmed to Fit

2013 Freightliner Sprinter

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Product Images

etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
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 C56028 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.
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  • Reviews (4)
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CURT Custom Fit Vehicle Wiring - C56028

Highlights

  • Custom Fit for Your Vehicle: Works with your vehicle's wiring
  • Tow Without Factory Prep: 4-pole flat connector powers trailer lights for safe towing.
  • Plug-and-Play Install: T-connector plugs inline with tail lights—no cutting or splicing.
  • Protects Vehicle Circuits: Powered converter isolates trailer load from vehicle wiring.
  • Clean, Factory-Style Fit: Harness routes through existing trim for a tidy, hidden setup.
  • LED-Light Ready: Works seamlessly with trailers using standard or LED lighting systems.

Features to know about

Installs Without Cutting or Splicing: Plug-In Harness

Wiring a trailer can be tricky, but this Curt T-Connector makes it simple. It plugs directly into your vehicle’s existing wiring, giving you a 4-flat connector without having to cut or splice anything. The plug-in design keeps the install clean and straightforward so you can get your trailer lights working fast.

Protects Vehicle Electronics: Powered Converter

This harness includes a powered converter that isolates the trailer wiring from the vehicle’s sensitive electrical system. That means your running, brake, and turn signal lights work properly without overloading factory circuits or triggering dash errors. It’s built for vehicles without a tow package and keeps everything running safely and reliably.

Covers the Basics for Towing: 4-Flat Connector

The integrated 4-pole flat connector gives you what most trailers need—running lights, brake lights, and turn signals. It’s the standard setup for small and midsize trailers, perfect for towing boats, campers, or utility trailers with confidence that everything will light up as it should.

Clean Factory-Style Fit: Uses Existing Plugs and Trim

Because it connects at the factory tail light points and routes through existing grommets, this harness gives a tidy install with no loose wires hanging out. The end result looks like it came straight from the factory, with a weather-tight fit that stands up to everyday use.

Specs

  • Comparison image showing labeled components of the Curt T-Connector Vehicle Wiring Harness with 4-pole flat trailer connector, including plug ends and converter unit for trailer hitch wiring setup.

56028 CURT T-Connector - Surface Mount Technology - 4 Wire

Similar to Hopkins HM11142255

Installation Details C56028 Installation instructions

This Product Fits The Following Vehicles




Ratings & Reviews

4.8

4 reviews
5 Stars
(3)
4 Stars
(1)
3 Stars
(0)
2 Stars
(0)
1 Star
(0)
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by:
2009 Dodge Avenger
Got exactly what I ordered. I had a previous universal model installed on my avenger, but it wasn't myself who installed it. It was placed outside the vehicle and overtime the power wire sheared off right at the control box. Installing the new one took me about 20 minutes, without any special tools, that includes running the new line to the battery, and locating the module inside the trunk. The one thing that I didn't like about the product is that the wire butt splicers are not the heat shrink ones, just crimp on. So I bought some at my local hardware store. Being weather proof and having that extra adhesive is a must in northern climates. The one main takeaway from installing the product myself is, although the video is a great help, don't forget to sand off the paint on the part of the body where you attach your ground, otherwise you may get a bad connection and have intermittent issues. Shipping took a little longer than I expected, however that was due to customs holding onto it I would assume, as it spent 5 days between leaving the US and entering Canada, however I would order again from etrailer, as even with conversion, $[XX] USD / $[XX]CAD (with shipping) is alot cheaper than locally sourced at $[XXX] CAD
by:
2009 Dodge Avenger
Very easy to install. Works wonderful with my trailer.
Ben L. profile picture

Ben L.

7/28/2015

Product was easy to install and I am happy to report I have not had one issue with the harness or the hitch. Works the way it should work without any issue.

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Quick and easy
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Info for this part was:

Employee Wilson B
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Employee Kristina F
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Employee Isabelle B
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