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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
1978 Jeep CJ-7
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CURT

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

Part Number: C56230
In Stock
$74.27
Retail:$121.95
You Save: 39%
Custom Fit Vehicle Wiring
Not Confirmed to Fit

1978 Jeep CJ-7

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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 C56230 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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CURT Custom Fit Vehicle Wiring - C56230

Highlights

  • Custom Fit for Your Vehicle: Works with your vehicle's wiring
  • Tow Without Factory Prep: 4-way flat connector powers trailer lights for safe towing.
  • Plug-and-Play Install: T-connectors plug in behind tail lights—no splicing needed.
  • Clean Storage Option: Harness stays in trunk to protect plug when not in use.
  • Outdoor Mount Ready: Can be routed under spare tire and paired with bracket #18144.
  • No-Drill Mounting Choice: Works with short (#18140) or long (#18136) brackets for easy setup.

Features to know about

Installs Without Cutting or Splicing: Plug-In Harness Design

This Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector plugs directly into the vehicle’s tail light wiring. There’s no need for cutting or splicing factory wires. It’s a clean, plug-in setup that makes wiring a trailer simple and secure for DIY installs.

Comparison image of Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector showing plug ends, converter box, and wiring layout for trailer hitch installation.

Keeps the Connection Protected: Store the 4-Way Inside the Trunk

When not towing, the 4-flat connector stays tucked inside the trunk. Just route it out when you need it and close the trunk over the wire to hold it in place. This keeps the connector out of the weather, reducing corrosion and keeping it ready for your next trip.

Optional Permanent Mounting: Use Standard 4-Flat Bracket Hardware

If you prefer a fixed exterior connection, you can mount it using a 4-Flat Mounting Bracket #18144. For a no-drill install, a short bracket #18140 or long bracket #18136 can be added. This lets you choose a neat, permanent setup if you want the connector accessible outside the vehicle.

Built-In Powered Converter: Reliable Trailer Light Signal Transfer

The powered converter in this harness provides proper power to the trailer lights while protecting sensitive vehicle electronics. It handles the signal conversion for running lights, turn signals, and brake lights through the 4-flat connector, giving you dependable lighting every time you tow.

Specs

Electrical Specifications

  • Maximum amperage:
    • Stop/turn lights: 3 amps per circuit
    • Tail lights: 6 amps per circuit

Warranty

  • Limited 1-year warranty

56230 Curt T-Connector Vehicle Wiring Harness with 4 Pole Trailer Connector

Similar to Tekonsha 118656

Installation Details C56230 Installation instructions

This Product Fits The Following Vehicles




Video of Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Curt Custom Fit Vehicle Wiring - Trailer Hitch Wiring - C56230 Review

Today we're going to review part number C56230. This is Curt T-Connector Vehicle Wiring Harness with the 4-way flat trailer connector. This is a custom fit part. It is designed to fit the Dodge Challenger starting in 2015. If I want a custom fit part what I would recommend is to go to our website, use our fit guide. Put in your year and model vehicle, and it'll show you if this part will work for your application. This will provide a 4-way flat trailer connector at the back of your vehicle to power your trailer signal lights.

It does connect quickly and easily. There's no cutting or splicing of wires. Basically, you use these plug in T-connectors. They would usually plug in behind your rear tail lights in your rear cargo area, and then you run this power lead to your battery to supply power to the converter. It does include this powered tail light converter, and this will connect directly to the battery, and it avoids overloading your vehicle's electrical system.

This converter is constructed using SMT technology, which is surface mount technology. It gives you consistent, reliable performance. It will maximize your trailer light yield and intensity while producing minimal heat. It also insures superior operation in any rough road conditions. This part comes with everything shown here on the table. I'm going to show you how this all connects here in a minute.

It is made in the U.S.A. A few specs on this harness, the maximum amperage on the stop and turn light circuit is 3 amps per circuit. On the tail light circuit it's 6 amps. Again, it comes with a nice set of detailed instructions. Step-by-step instructions, how to install it, and even pictures of your connection points. Basically, what you would do is go to rear of your vehicle, and in your rear cargo area you'd go start on the passenger side and you'll find the T-connector that has the green wire in it, that's for the passenger side tail light.

You'll go over to the passenger side and unplug behind the tail lights, plug this in, and then plug the wiring harness into this. Then you also notice on this side they'll be a white wire. This white wire has an eyelet on it, that's for a good ground. You want to make sure you connect this to a good clean ground. If there is one there go ahead and connect it, if not they include a grounding screw that you can drill a hole and make your own ground. Then what you'll do is take this length of yellow wire with the T-connector on it. This is for the drivers' side. You'll run this length of wire over to the drivers' side behind the tail lights, and go ahead the same way, unplug it and plug this in line to the tail lights. With those all connected you'll have your remaining black wire. This is what needs to run to your battery. On the Dodge Challenger the battery will be in the trunk. This already has an inline fuse holder connected to it, so what you'll want to do is run this wire to your positive post of your battery. You'll connect this, this eyelet will connect to the positive post, and what you'll want to do is open up the fuse holder. They include this 10 amp fuse that you'll want to put into the fuse holder, and then go ahead and put the cover back onto it. Now when you do run all these wires, there you go, got your cover back on. When you do run all these wires if you have any of them that are hanging down they do include some cable ties to help take up any slack. Then what you'll do is this will run out the back and plug into your trailer, so this is all connected ready to go. Last thing you might want to do is take this double-face tape, attach it to the bottom of your converter. You don't want to have it flopping around, so you'll attach that and connect this, peel the tape off, connect it to a nice flat surface so it doesn't move around. Then your last thing is your dust connector, or your dust cap. You go to your 4-way, and when you're not plugged into your trailer what can do is go ahead and put your dust cap on there, and can leave that on if you'd like. When you're not plugged in put the cap over the terminals, and that helps protect them from any damage, or from the elements. After that's all connected you're all pretty much ready to go. This plugs into the trailer and will supply the signal lights on your trailer. That should do it for the review on part number C56230, the Curt T-Connector Vehicle Wiring Harness with the 4-way flat trailer connector.

Customer Satisfaction Score:

Ratings & Reviews

4.8

35 reviews
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by:
2020 Dodge Challenger
Good install, but died 2 weeks after 1 year warranty was up.
Mike L. profile picture
Etrailer Expert

Mike L.

3/31/2026

Usually that's caused by a short circuit in the trailer wiring. You'll want to trace each of the taillight circuits on the trailer. Look for loose connections, pinched wires or cracked or worn wire insulation that would allow the circuit to short to ground.

by:
2021 Dodge Challenger
Very simple plug and play installation.
by:
Very easy to install and works flawlessly! I purchased this product because it was plug and play and priced accordingly. No cutting, splicing or special tools needed. Just 5 minutes and the instructions. I recommend this to everyone.
by:
Perfect fit
by:
2018 Dodge Challenger
Couldn't be easier!
by:
2019 Dodge Challenger:
You have to watch the video to find out what ends goes to the passenger and driver side tail lights, this was not in the instructions, and even then, the wire colors were different than in the video. Also, there is a lot of room to mount the electronic module on the passenger side of the trunk (by the battery) but the cables between the module and the driver side tail light were too short to do that, so it did not mount in the optimum location.
The car tail lights are still working fine, but have not tested on the trailer lights yet, I do though expect it will work.
by:
Good instructions, plenty of length for connector to reach trailer wiring.
by:
2015 Dodge Challenger
Product would have installed as is, but I like things with less clutter so the positive wire was cut and shortened. I soldered the wire and covered with heat shrink in the same place they had soldered and I replaced the terminal with a smaller size. It would have worked as is though.
by:
2023 Dodge Challenger
Easy peasey.
by:
2017 Dodge Challenger
Great product very easy to install made a small hole in the trunk drain plug and ran the plug outside then repaired the hole with silicone
by:
Fast shipping - very easy to install - great product
by:
Easily install in the trunk of my hellcat and works great with my trailers
by:
2019 Dodge Challenger
Perfect fit and connections. No surprise. The Curt packages sold through E-Trailer have always been spot-on.
by:
Absolutely love how easy the installation was
by:
2018 Dodge Challenger
Easy to install. Battery is in my trunk so no long wires to run.
by:
2015 Dodge Challenger
The harness fit perfectly and I received it when expected.
by:
Perfect fit
by:
My hitch on my 2019 hellcat and wireing harbess work great...i pull total 19oo lbs no problem
by:
Great service great speed all good had product and would buy again and tell others great place
by:
Quick easy and excellent product.
by:
2021 Dodge Challenger
Easy install
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See what our Experts say about this CURT Custom Fit Vehicle Wiring

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    All of the hitch receivers available for your 2016 Dodge Challenger will show some of the cross tube. However, the Curt Class II # C12064 and Curt Class III # C13093 do have the receiver opening welded under the tube unlike the Draw-Tite Class II # 36548 which is welded even with the cross tube.. None of them completely conceal it up under the fascia. The Class II is a 1-1/4 inch receiver and the Class III is a 2 inch receiver. You should also know that Curt requries the use a stablizer...
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  • Difference Between Tekonsha T-One and Curt T-Connector Wiring Harness for 2019 Dodge Challenger
    Both the Tekonsha T-One # 118656 and the Curt T-Connector # C56230 are custom 4-Way trailer wiring harnesses that will install the in the same exact manner on your 2019 Dodge Challenger (by plugging into factory ports behind the tail lights inside the trunk and running a hot lead to the battery). The primary difference between the 2 kits is simply in the brand name but the Tekonsha T-One # 118656 does have a higher amp capacity than the Curt, which is why I recommend going with the T-One...
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  • Where Is the Rear Threshold Plate On a 2017 Dodge Challenger When Installing T-One Harness 118656
    The rear threshold plate as Tekonsha calls it or the rear scuff panel as Curt calls it can be found in the attached photo. I have also attached for you two sets of instructions, one for the Curt T-Connector Vehicle Wiring Harness part # C56230 and one for the Tekonsha T-One Vehicle Wiring Harness part # 118656. These are different harnesses yes but they install in the same place which means the process will be the same. I recommend you take at the instructions for the Curt T-Connector even...
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  • How To Mount the Trailer Connector Outside the Vehicle on a 2019 Dodge Challenger
    It sounds like you are using a wiring harness that ties in behind the tail lights, the Curt T-Connector Vehicle Wiring Harness part # C56230. If that is the case and you are wanting to know how to run the 4-way trailer connector outside of the vehicle, then most customers will simply bring the trailer connector out of the trunk and then shut the trunk to secure it. This will then keep the trailer connector protected while not in use. However, if you want to permanently mount the trailer...
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Do you have a question about this Custom Fit Vehicle Wiring?


Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
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

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