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  2. CURT
  3. 4 Flat
  4. No Tow Package
  5. Trailer Hitch Wiring
  6. Vehicle End Connector
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1987 Dodge Dakota
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CURT

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

Part Number: C56233
42 Reviews | 13 Questions
In Stock
$71.19
Retail:$109.95
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 Custom Fit Vehicle Wiring
Not Confirmed to Fit

1987 Dodge Dakota

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curt custom fit vehicle wiring trailer hitch 4 flat t-connector harness with 4-pole connector
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curt custom fit vehicle wiring trailer hitch 4 flat c56233
curt custom fit vehicle wiring trailer hitch end connector t-connector harness with 4-pole flat

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2020 hyundai ioniq custom fit vehicle wiring curt trailer hitch 4 flat t-connector harness with 4-pole connector
2020 hyundai ioniq custom fit vehicle wiring curt trailer hitch plug-in on a
2020 hyundai ioniq custom fit vehicle wiring curt end connector 4 flat c56233
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Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector customer photo
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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 C56233 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 (42)
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CURT Custom Fit Vehicle Wiring - C56233

Highlights

  • Custom Fit for Your Vehicle: Works with your vehicle's wiring
  • Plug-and-Play Install: T-connector plugs inline behind tail lights with no wire splicing.
  • Ready for Trailer Lights: 4-way flat connector powers trailer brake, turn, and tail signals.
  • Protected Power Supply: Converter box and fuse holder connect safely to vehicle battery.
  • Clean Routing Option: Power wire can run under vehicle using existing grommet for easy fit.
  • Reliable Ground: Single ground wire mounts to vehicle body for consistent signal flow.

Features to know about

Installs Without Cutting or Splicing: Plug-In Harness

Wiring up a trailer can be stressful when you have to cut into factory wiring, but this harness makes it simple. The Curt T-Connector plugs inline right behind each tail light, giving you a 4-flat trailer connector without any splicing. It uses factory-style connectors that snap together cleanly for a secure fit and a professional look.

Straightforward Setup: Powered Converter and Ground Connection

The powered converter connects between the tail light wiring and the trailer plug to keep the vehicle’s electrical system protected. A single ground wire secures to the vehicle body, and one power wire runs to the battery through an included fuse holder. The fuse and holder are part of the kit, so all the key pieces for a safe, complete circuit are already there.

Clean Routing with Factory Grommets: Under-Vehicle Power Wire

Running power to the battery can sound tricky, but this design keeps it clean. You can route the wire through an existing grommet under the spare tire well or along the underside of the vehicle. It’s fine to run it underneath—just follow existing factory wiring and secure it with zip ties away from anything hot or moving.

Covers Trailer Basics: 4-Flat Connection for Running, Turn, and Brake Lights

Once installed, the 4-flat connector handles all your essential trailer lighting—running lights, turn signals, and brake lights. It’s the standard connection for most small and medium trailers, so you’re ready to tow as soon as you plug it in.

Specs

Electrical Specifications

  • Connector Type: 4-Pole Flat Trailer Connector
  • Converter Type: Powered Converter
  • Vehicle End: Plug-In T-Connector
  • Configuration: Plug and Lead
  • System Compatibility: No Tow Package

Curt T-Connector vehicle wiring harness comparison image showing multiple connectors with technical callouts for installation or model differences.

56233 CURT T-Connector - Surface Mount Technology - 4 Wire

Similar to Hopkins HM11143754 and Tekonsha 118692

Installation Details C56233 Installation instructions

This Product Fits The Following Vehicles






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Customer Satisfaction Score:

Ratings & Reviews

4.7

42 reviews
5 Stars
(34)
4 Stars
(6)
3 Stars
(1)
2 Stars
(0)
1 Star
(1)
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by:
i asked if this would fit my vehicle and was assured it would but this harness is not for my vehicle trim specification and now needs to be returned. i specifically asked if this harness would work for my trim Hyundai and extremely disappointed to find out i was misguided
by:
My trailer harness does not fit, it has 6 prongs and my vehicle has 4.
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Jenny N. profile picture
Etrailer Expert

Jenny N.

7/20/2023

Sometimes finding the right connector can be tricky. I wanted to confirm that you have the Hybrid Blue version of the 2020 Hyundai Ioniq?

by:
Easy-to-follow instructions, adequate lengths. Hardest part is fishing the wire through and securing along the way. Fastest electrical work I've done on a vehicle.
by:
The plug and play is super easy to install. Directions were good. The photos were too dark. The sticky pad for the black box could be a touch thicker to better adhere to contours in the metal. Excellent product
Mike profile picture

Mike

3/27/2025

The trailer hitch was a breeze to install. It still is in place and performing well.

Jesse M. profile picture
Etrailer Expert

Jesse M.

3/27/2025

@Mike Nice! Glad to hear you are happy with your hitch and that you had an easy go on the installation! Come back anytime you need anything.
by:
I had trouble at fist but it was my trailer at fault etrailer help was unprecedented thanks for the great service wires work great such a pleasure
by:
2016 Hyundai Elantra
The installation was pretty straightforward. Unscrew some interior panels and plug and play the T connectors into the existing wiring harness. The biggest hurdle was routing the power cable to the battery. I couldn't find a spot to feed from the cabin into the engine bay so I opted for routing it through the bottom of the car. Fortunately there's 2 drain holes under the spare tire that are great for feeding it outside. Then I undid the underbody panel that runs along the length of the car on the driver's side and ran the cable through there. After that I routed it upwards through the engine bay and on the battery. The only big negative was the crimp connectors sucked and didnt hold very well. My battery also has a plastic cover over the terminal that you hook up the cable to so I had to cut a slot in it so it could close properly. Fortunately the wiring works and all my trailer lights correspond well.
by:
Finally finished installation of the trailer wiring kit. The kit goes together really easy and is a quick install with the exception of the battery wiring. Hyundai did not make it easy. I went through an existing grommet in the rear passenger side (underneath the tray) and then routed it along a wireway on the bottom of the car on the drivers side using the zip ties provided in the kit. I couldn't get the wireway apart so I ended up just loosening it up and tucking the wire in using the blade of a screwdriver. Pulled it up through the engine compartment using a short piece of fishtape and crimped everything together. Kit works great and is holding up well (100+ miles already).
by:
My ebike blocks my tail lights so i figured I'd put some magnetic lights on the truck lid
The harness was straight forward & easy to install. Running the wire to the battery was the only thing that slowed it down abit.
by:
This wiring kit worked very well. The directions were clear and I was able to install it in less than an hour. The only reason for 4 stars instead of 5 is I would be happier if It didn't need a connection to the car battery. Most harnesses I have installed get their power from the vehicle wiring harness alone.
by:
2018 Hyundai Ioniq
Rather than go below the car, I chose to run the 12 volt feed wire along the inside driver side door trim panels and take it through the firewall where the hood latch cable exits the driver cabin.
The 2018 Ioniq moved the engine battery next to the hybrid battery so I had a friend hold a screwdriver against the battery cable while I loosened the nut and slipped the controller terminal on the post.
by:
2017 Hyundai Elantra
Plugged in great but running the wire from the back of the car to the front was a PITA.
by:
Worked with Carmel, she made ordering my hitch and accy's easy and quick.

Speaking of quick she told me that she would place the order and that it should go out within 4 working days. I received my complete order within 3 days. Now that was fast.

If you need a hitch get it from etrailer, one stop shopping!
by:
Used my rear power outlet for 12v to power control box. Works great.
by:
2014 Hyundai Elantra
The electrical kit went in straight forward. It's a little odd that they use a black wire as a positive. The plug and play made connecting very easy. Had more issues popping the trim tabs than anything else.
by:
2018 Hyundai Elantra
Works perfect no issues longer part of install is routing the power wire from the battery still done in 45 min....best part is there are no scotch blocks to mess with your wiring, all plug and play
by:
Made installation nearly plug and play. Worth every penny.
by:
Great item..... Great instructions! Took about an hour to install and everything worked as it should. Prompt delivery as well!
by:
All products fit including wiring. Great customer service, although it took a couple tries to reach them.
by:
plug and play
by:
2018 Hyundai Elantra
Wow, that installed easy.
by:
2018 Chevrolet Volt
Wiring went in super easy. The only issue was in running the +12 volt line the whole length of the car. I had to remove and reinstall a lot of trim.
by:
Harness fits 2020 Huyndai Ioniq plug-in hybrid.
by:
2019 Hyundai Ioniq
Items arrived and performed as described. Good quality, fast delivery and price made this purchase an overall GOOD DEAL!
by:
Was easy to install and has worked great!
by:
this was a cinch to install! highly recommend. took me about 25minutes tops and finding the right path to wire to my battery took the longest.
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See what our Experts say about this CURT Custom Fit Vehicle Wiring

Do you have a question about this Custom Fit Vehicle Wiring?
  • Will Curt T-Connector Fit a 2013 Hyundai Elantra GT
    Hey Sylvian, thanks for reaching out! The Curt T-Connector # C56233 will definitely fit your 2013 Hyundai Elantra GT, but I actually recommend going with the T-One # 118692 instead because it has a much more reliable module. That Curt wiring has their older module which we found wasn't uncommon for it to crap out after about a year.
    view full answer...
  • 4-Way Vehicle Wiring Harness Compatible With 2022 Hyundai Ioniq PHEV
    Your 2022 Hyundai Ioniq PHEV is going to require the Vehicle Wiring Harness # C56381. The Curt Harness # C56233 you found is only for the Blue hybrid trim. I currently see the PHEV was only offered for the SE, SEL and Limited trims.
    view full answer...
  • Trailer Wiring Harness Installation for 2017 Hyundai Ioniq Hybrid Blue
    The Curt # C56233 T-Connector you'd asked about is indeed a fit for your 2017 Hyundai Ioniq Hybrid Blue model. The installation is pretty straightforward. The converter box plugs inline at the connection points between the driver's and passenger taillight wiring harness and the taillight assemblies, and one ground wire needs to be connected to the vehicle body. You'll also need to run one wire through an existing grommet (usually found under the spare tire) under the vehicle to the...
    view full answer...
  • How to Install Curt T-Connector on 2018 Hyundai Ioniq Hybrid Blue
    Thanks for reaching out! To install the Curt T-Connector Vehicle Wiring Harness # C56233 on your 2018 Hyundai Ioniq Hybrid Blue you'll need to use the instructions because as of right now (February 2023) we haven't had the chance to install this on the Blue model. The instructions are linked to this answer page as well as a photo of the steps needed to take for you to reference.
    view full answer...
    Image 1 for
  • Trailer Hitch and Wiring for a 2014 Hyundai Elantra GT Hatchback
    We rate hitch installation difficulty based on the amount of time it takes for a professional or skilled layman to complete the installation. The hitch that takes the least time to install is Draw-Tite hitch # 24905. The estimated pro installation time is 30 minutes so their difficulty is rated a 3 out of 10. Please note that none of the hitches fit models built in Korea; check the door manufacture sticker or VIN. If the second letter is an M it means it was Korean-built. This, and all...
    view full answer...
  • Trailer Wiring Harness to Fit a 2013 Hyundai Elantra GT
    We've confirmed that the Curt trailer harness, part # C56233, is a fit on the 2013 Hyundai Elantra GT. It plugs into the car's wiring behind both tail lights. Then there is a wire that needs to be run to the vehicle battery through an included fuse holder. The fuse is also included. Unfortunately, we don't have a video of the install at this time but I have linked the install details for you.
    view full answer...
  • Trailer Hitch and Wiring Recommendation 2014 Hyundai Elantra GT Hatchback from Korea
    The Curt hitch part # C11400 is a fit for your 2014 Hyundai Elantra GT Hatchback that's made in Korea. For trailer wiring the part # C56233 is also a confirmed custom fit that would work well. The recommended ball mount is the part # C45521. For a hitch ball you would then want the part # A-82 for a 2 inch ball or part # A-80 for a 1-7/8 inch ball.
    view full answer...
  • Trailer Hitch Recommendation for Towing Jet Ski Trailer with a 2017 Hyundai Elantra
    I recommend going with the Curt Trailer Hitch Receiver # C11424 for your 2017 Hyundai Elantra as long as it's a Sedan (excluding the Sport edition). I like the Curt hitches because they tend to have a thicker powder coat which helps to protect them longer. If you have a different model of the Elantra please let me know and I can make a different recommendation from the linked selection. To complete a towing setup you also need wiring and a ball mount setup. I recommend picking up the Curt...
    view full answer...
  • Does Power Wire of Curt Trailer Wiring Harness Have to Run Through Interior
    Hey Robert, yes it's perfectly fine to run the power wire of the Curt trailer wiring harness part # C56233 underneath the vehicle to get to the vehicle battery instead of running it through the interior. This is a very common way of running this circuit.
    view full answer...
  • Draw-Tite Class I Trailer Hitch for 2015 Hyundai Sonata
    According to my Draw-Tite contact, their # 24902 Class I receiver hitch is a fit for all models of the 2015 Elantra Sedan or Coupe. I was not able to find any information about a Hyundai Elantra Sport...could you have meant a Hyundai Elantra GT? For the GT model, you'd need the Draw-Tite Class I hitch, part # 24905. If you'll be using the hitch for light duty towing purposes, you'll need a few other items to complete your towing system: Trailer wiring harness, for the coupe or sedan-use...
    view full answer...
  • Plug and Play Trailer Wiring Harness for a 2018 Hyundai Elantra GT
    For your 2018 Hyundai Elantra GT, I recommend using the Curt T-Connector Vehicle Wiring Harness part # C56233 which is currently the only plug and play wiring harness we have for this vehicle. The install photos which you can see in the attached instructions are on the GT model.
    view full answer...
  • Will the Curt T-Connector # C56233 Fit My ECO Model of 2017 Hyundai Elantra?
    Yes, I confirmed with Curt that the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C56233 will fit the ECO model of your 2017 Hyundai Elantra. If you also need a hitch receiver, I recommend the Curt Trailer Hitch Receiver - Custom Fit - Class I - 1-1/4" # C11400 (for GT Hatchback models) or # C11424 (sedan - excluding Sport models). Both of these Curt hitches come with a gloss coat over the base powder coat for ultimate protection against rust and corrosion.
    view full answer...
  • Trailer Wiring Options for 2016 Hyundai Elantra Sedan or Hatchback
    We have two options for trailer wiring for your 2016 Hyundai Elantra. If you have a sedan you'd want the part # 118678, or if you have a hatchback GT you'd want the # C56233. Both of these options are confirmed fits.
    view full answer...

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 Jeff D
Installed by:
Jeff D
Employee Joshua S
Video Edited:
Joshua S
Employee Laura H
Written by:
Laura H
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
Kristina F
Employee Isabelle B
Updated by:
Isabelle B
Employee Ethan H
Video by:
Ethan H
Employee Jesse B
Test Fit:
Jesse B

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