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  1. Custom Fit Vehicle Wiring
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  4. Trailer Hitch Wiring
  5. No Tow Package
  6. Vehicle End Connector
Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
CURT

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

Part Number: C56336
In Stock
$71.10
Retail:$110.95
You Save: 36%
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 C56336 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 (205)
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CURT Custom Fit Vehicle Wiring - C56336

  • 4 Flat
  • Trailer Hitch Wiring
  • No Tow Package
  • Vehicle End Connector
  • CURT
  • Plug-In
  • Powered Converter
  • Plug and Lead
  • Hidden

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 behind tail lights
    • 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
  • 1-Year limited 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 the tail light assemblies to access this harness. 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 rear cargo area.


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.



56336 Curt T-Connector Vehicle Wiring Harness with 4 Pole Trailer Connector

Replaces 56198

Installation Details C56336 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:

Ratings & Reviews

4.8

205 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:
2019 Dodge Durango

Shipping was fast. I have not had a chance to install the hitch yet but plan to this weekend. The videos for each item were very informative and easy to follow. Knowing what tools I may need ahead of time is great and I have not doubt that the install will be smooth. Thank you!

Brooke M. profile picture
Etrailer Expert

Brooke M.

6/5/2025

I know you probably haven't installed it yet, but we would love to know what you think once you have, too :)



by:

Hitch fits good. New hitch does not have the tabs to fasten the lower bumper to the hitch. See pic. I guess you use zip ties. Not impressed



by:

The control box wiring was not nearly long enough. Had to reach way up into vehicle to try to attach. Finally able to zip-tie it to other wires. Not ideal and made the installation take twice as long as it should have.



by:
2019 Dodge Durango

The install video wasn't very helpful in routing the positive wire to the battery or where to selftap the ground wire. After viewing videos on youtube i discovered uhaul says to selftap the ground wire into anywhere behind the passenger tail light. I routed the positive wire along the gas lines thru the control arm brackets and then along the wire harness long the passenger side to just behind the front wheel, i went up thru a hole in the fire wall and connected to where you would jump the car. Still tbd if it works properly, as i just installed it to the car, but haven't used it on a trailer yet.



by:

Was relatively easy to install and still works great after 1 year of use. I have no issues with it.



by:

Very well designed. Made install Very simple and easy. These kind of products keep people coming back!



by:

Not hard to do yourself. Works like a c harm.

Tim profile picture

Tim

2/22/2025

Still working still no complaints.

Robin H. profile picture
Etrailer Expert

Robin H.

2/22/2025

@Tim excellent.


by:
2021 Dodge Durango

Excellent service and very fast shipping and delivery



by:

Installed on 2016 Durango, it went well, nice product, I really liked the positive wire gauge, and quality! I added a small mounting bracket to an existing 13mm stud to mount the controller for a solid mount location. Thank you



by:
2016 Dodge Durango

Very nice fit. In my opinion, it wasn't too bad too install. I had the most trouble getting the original bolts out of the bumper iron than any other part of the fitment. I chose to do the Curt wiring harness at the same time....THAT took longer than the hitch installation. The back end went smoothly, it is the routing of the positive wire to the battery that is the time consumer. That is if you choose to do it in a neat and thoughtful manner. Overall, both projects took about 5.5 hours for me to do all by myself. Probably shouldn't take as long, but with the trouble with the bolts.... good products, I would recommend them to anyone.



by:
2017 Dodge Durango

Very pleasant doing business with them shiped it fast too



by:

Great kit that was pretty easy to install with the help of the install video on the website. The only thing that was some what of a pain was mounting the control box above where the muffler is but I managed. Finished install in about 2 hours or a little less from start to finish.



by:
2022 Dodge Durango

Fit perfectly on my 2022 Durango GT. I didnt have to cut the bumper either. Highly recommend and easy install. Took me about an hour and a half from start to finish.



by:

Received my trailer wire harness on a Sunday USPS priority delivery. Product had clear directions and I installed it on my own in 1.5 hours. Thanks ETrailer for the fast shipping. Love your website and coustomer service. Thanks Kevin



by:

Easy to install and the lights worked perfectly. All of the parts needed to make it work were included so there was nothing extra to buy.



by:
2017 Dodge Durango

Installed this harness on a 2017 Dodge Durango. I have had it installed for almost a year and it is still working as it should. Easy to follow instructions and only basic tools needed for install.



by:
2017 Dodge Durango

Yall are [freakin'] awesome !!!!



by:

Great product the fit was perfect and the hardware kit made the install easy



by:

Loved the installation of this. So easy, took me 30 minutes from start to finish. Includes everything you need. I used the installation video they send you in your purchase email instead of the paper. Clean install, works great so far. Highly recommend



by:
2019 Dodge Durango

everything arrived on time my entire order is in the box all parts and pieces. now I just have to install it.



by:
2022 Dodge Durango

Instructions were clear. This was a much more complicated install than the method I previously used (splicing into twilight wires and hoping i picked the right ones), but I'm much more confident in this install and the materials all seam to be high quality.



by:

Very professional excellent phone call service. Assistant was highly informative that made sure all parts would match my vehicle.



by:

Got the wrong harness sent correct and delayed my installation a week, on track now



by:

Wiring harness worked well and was easily installed.



by:
2017 Dodge Durango

Installation wasn't fun but not bad, but the videos definitely help.


25
205
Show More Reviews

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  • Best 4-Pole Trailer Wiring For 2018 Dodge Durango Without Factory Wiring
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  • Does The Curt T-Connector C56336 Work With LED Tail Lights On 2021 Dodge Durango?
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  • Will Curt Trailer Hitch Fit a 2014 Dodge Durango with Rallye Package
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  • Trailer Hitch and Wiring Recommendations for a 2015 Dodge Durango
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Do you have a question about this Custom Fit Vehicle Wiring?


Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Joshua S
Video Edited:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
Kristina F
Employee Isabelle B
Updated by:
Isabelle B
Employee Amanda M
Written by:
Amanda M
Employee Jonathan Y
Video by:
Jonathan Y
Employee John S
Video by:
John S
Employee Thomas T
Video by:
Thomas T
Employee Conner L
Test Fit:
Conner L
Employee David F
Test Fit:
David F
Employee Jacob H
Test Fit:
Jacob H
Employee Ryan G
Test Fit:
Ryan G
Employee Kevin C
Test Fit:
Kevin C

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