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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 # C56235
Our Price: $56.77
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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. 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 C56235 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 (21)
  • Q & A (0)
  • Videos (2)
  • Photos
  • Why etrailer?

CURT Custom Fit Vehicle Wiring - C56235

  • Custom Fit
  • Trailer Hitch Wiring
  • 4 Flat
  • Powered 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. Powered converter reduces strain on wiring system and is made using SMT to ensure superior performance.


  • 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


  • Maximum amperage:
    • Stop/turn lights: 3.0 amps per circuit
    • Tail lights: 6.0 amps per circuit
  • Limited 1-year warranty


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, scuff panels, cargo tie downs, and speaker, and pull back the felt trunk liner to access these connection points. Once you've plugged in the T-connector, run the hot lead to your car battery, which can be found in your trunk on the passenger's side. 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.

56235 Curt T-Connector - Surface Mount Technology - 4 Wire

Installation Details C56235 Installation instructions

This Product Fits The Following Vehicles

California residents: click here

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

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Curt T-Connector Vehicle Wiring Harness Installation - 2017 Chrysler 300C

Today on our 2017 Chrysler 300C, we're going to be taking a look at and showing you how to install the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector, part number C56235. This is what our wire looks like when it's installed. You can see it's going to live inside the vehicle. This is going to provide you the necessary power to light your trailer. You're going to have three amps per circuit for your stop and turn signals. You're going to has six amps per circuit for your tail lights. When you're not in use, you just simply take it, roll it up.

You can store it off to the side, and when you're ready to use it, drape it out the back. Make sure you stay away from the latch. Close your trunk. Now let's show you how to get this installed. To begin our installation, we need to get inside the trunk.

We're going to remove our floor covering here. We're going to remove this sill pan here. We're just going to lift up on it, so now we're going to remove our panels on the side here. First, we're going to take out this hook. We're going to be using a T25 star bit.

We're going to have two fasteners here. We're just going to pull up on them. Here we're going to have another push pin. We're just going to pull out on it. You're going to have some wiring that goes to this light. We're just going to unplug it.

All you're going to do is push it in on it's head to pull it out and take this and pull it around the trunk here. What we're doing, is we want to gain access to this plug here. From here, you want to unplug the taillight. This little red tab we're going to pull out and we're going to push down on that piece. We're going to take the end with our green wire and brown wire. We're going to hook one in into the wire we just off, the other end right into the spot where we removed that wire. Now, we're going to repeat that process on the other side of the vehicle. We went ahead and cleaned our area once we found a good location and we're going to take our two sided sticky tape and take one side, we're going to stick it to our modular box, press it in to place and we're going to take the other side, press it in to place. Make sure you got a good hole. Next, go ahead and put our ground in place, we're going to put it right here on the existing ground that's coming from the battery. We're going to use a 10 millimeter wrench. Go and install your ground and reinstall your nut. From here, we zip tied our yellow wire that's going over to our driver's side along the wire from the factory that's running around the back of the vehicle. It's underneath the sill panel. We're going to go ahead and put our carpeting back in place. You want to make sure that your power wire is coming out the bottom there. Feed that around there. You want to make sure to plug your light back up. Put these fasteners back in. Last we'll put inaudible 00:03:19 back. Now, we're going to repeat the same process on the other side of the vehicle. We're going to connect our positive cable. We're going to do it right here. We're going to be using a 10 millimeter socket. We'll remove the nut, put your ring terminal on, replace your nut, tighten it down. We'll put this cover back on. Once we have all our connections made, we can install our fuse. We can install our sill panel and it'll just pop into place. We can reinstall our floor cover. You want to make sure that your inaudible 00:03:58 holes hanging out. We'll go ahead and test everything out using part number I26 that you can find on our website. Brake lights, left turn, right turn, running lights. That'll do it for the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector, part number C56235 on our 2017 Chrysler 300C.

Customer Satisfaction Score:

Customer Reviews

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - C56235

Average Customer Rating:  4.8 out of 5 stars   (21 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.


It worked great. I ended up trading the vehicle up before the year review but I never noticed a single problem with it. It definitely did the job that was needed to.


Simple installation. Hardest part was disconnecting the trunk lights to get the trim panels out of the way. Due to not understanding the way the connector latch worked, broke the wires off one of them.

All the wires were the correct length for my application (2015 Chrysler 300), so I did not need to use the extension connectors.

One detail that would improve the instructions for amateurs would be to have a close-up of each connector that must be removed, along with arrows showing what needs to be pushed, and in what direction, to properly remove the connector. Trial and error usually works, but... prefer not to error.


Wonderful product. I would order it again. The only down side is there is no bracket to secure the 4 way to the car or the hitch. Turns out a bracket like that is very hard to find.

2016 Chrysler 300

Bought a chrome hitch cover and it came with a few scratches. Not worth sending back for another. I will install the electrical brake light connection this weekend. All in all, great products.


Easiest wiring I’ve ever done. Perfect plug and play. Because the battery is in the rear, all the components went easily into the trunk. I watched the instruction video. I highly recommend you do the same. After reviewing the 5 minute video, the job took me a total of less than 30 minutes.


Easy to install, clear instructions

2015 Chrysler 300

The wiring was an ease to install. will surely use your products agin.


The products arrived very quickly and fit my vehicle perfectly!

2015 Chrysler 300

plug and play


Worked great! Easy installation


Fit the car perfectly



2019 Chrysler 300

2019 Chrysler 300

2017 Chrysler 300S

Awesome fit perfectly it took me less than 10 min thanks guys.

2016 Chrysler 300S

Great service! Shipped right away! Easy instillation!






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

  • Chrysler Pacifica Trailer Wiring Harness Recommendation
    The Chrysler Pacifica began production with the 2017 model year, so there was no 2016 model Chrysler Pacifica. Some auto manufacturers release the next year's model in late spring or early summer of the previous year, so it's easy to mistake the model year you have. It happens all the time. With that in mind, I'd recommend a Tekonsha trailer wiring harness, but the exact harness you need will depend on which trim level your Pacifica is. • For a Hybrid, I'd recommend # 119190KIT • For...
    view full answer...

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Lindsey S
Written by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Joshua S
Video by:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
Kristina F
Employee Isabelle B
Updated by:
Isabelle B
Employee Shane H
Test Fit:
Shane H

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