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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
2005 Acura MDX
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CURT

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

Part Number: C56212
In Stock
$65.68
Retail:$107.60
You Save: 39%
Custom Fit Vehicle Wiring
Not Confirmed to Fit

2005 Acura MDX

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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 C56212 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.
  • All Info
  • Reviews (13)
  • Q & A (0)
  • Photos

CURT Custom Fit Vehicle Wiring - C56212

Highlights

  • Custom Fit for Your Vehicle: Works with your vehicle's wiring
  • Tow Without Factory Prep: 4-pole flat connector powers trailer lights for towing safety.
  • Plug-and-Play Install: T-connector plugs inline with tail lights—no cutting or splicing.
  • Protects Vehicle Wiring: Powered converter isolates trailer load from vehicle circuits.
  • Clean, Hidden Setup: Compact harness design keeps wiring tucked out of sight.
  • Reliable Trailer Signals: Ensures brake, turn, and tail light functions work correctly.

Features to know about

Installs Without Cutting or Splicing: Plug-In T-Connector Design

Wiring a trailer doesn’t have to mean cutting into the factory harness. This Curt T-Connector uses a plug-and-play design that connects directly to existing vehicle plugs. There’s no guessing, no splicing, and no need for extra parts. Just plug it in line with the tail light wiring and the 4-way flat connector is ready to go.

Keeps Vehicle Electronics Protected: Powered Converter Built In

Modern vehicles use sensitive lighting systems that can be damaged by extra load. This harness includes a powered converter that draws power directly from the battery instead of the tail light circuit, keeping the vehicle’s electrical system safe while delivering full lighting power to the trailer.

Covers Essential Trailer Lighting: 4-Flat Connector Output

The 4-pole flat connector provides running lights, turn signals, and brake lights—everything needed for a basic trailer hookup. It’s the standard connection used on most small and mid-size trailers, so you’re set up for the essentials right out of the box.

Clean, Hidden Setup for a Factory Look

With its hidden, vehicle-end connection and neat wire routing, this harness keeps things looking stock. The plug and lead design makes it easy to stow or access the connector when you need it while keeping the wiring protected from dirt and moisture when not in use.

Specs

  • Image: Comparison chart showing different Curt trailer wiring harness connector types with labeled callouts for technical reference.

56212 Curt T-Connector - Surface Mount Technology - 4 Wire

Similar to Hopkins HM11141974 and Tekonsha 118629

Installation Details C56212 Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:

Ratings & Reviews

4.7

13 reviews
Review sort icon
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.

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Product came quick and hooked up east, no issues, very happy!



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Worked exactly as expected.



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Bonjour votre produit est excellent,aucunes modifications est nécessaire,le câblage du véhicule reste d’origine
Et le fait de prendre le 12 volts directement de la batterie rend indépendant ce nouveau circuit
Merci et bravo pour votre produit



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Tire is in amazing shape compared to what is on my trailer, I should have bought two...



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Absolutely everything is included and great instructions. The only way it could be better is if it were self-installing!



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Works great ok my brZ

Anthony profile picture

Anthony

1/21/2018

Works great have not had any problems



by:

Simple and quick plug and play hook up definitely worth the purchase, way better off than trying to splice everything in with a cheaper setup.


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

  • What 4 Flat Wiring do I Need for My 2017 Subaru Impreza Sedan? I Only See on for the Wagon.
    Hello David, You are correct (3 words everyone likes to hear) the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C56367 will only work with the wagon. For your 2017 Subaru Impreza Sedan you will want the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C56212. You were not able to find it by going through our fitguide because it is currently on an extended back order, looks like you wouldn't be able to get it until early to mid...
    view full answer...
  • Curt Trailer Wiring Harness Causes ABS Problems when Installed on a 2013 Scion FR-S
    When you are having the problems on your 2013 Scion FR-S do you have anything plugged into the Curt wiring harness # C56212? If nothing is plugged into the 4-Way then it should not be drawing any power from the vehicle tail light connections. The only thing I can think of is if there is a short it could be overdrawing the tail light connections causing the problems you are having. That would indicate a problem inside the converter. To test the harness, use a circuit tester such as # PTW2993...
    view full answer...
  • Hitch, Ball Mount and Wiring for 2017 Toyota 86 for Towing and Cargo Carrier
    Draw-Tite Class I hitch # 24935 is a confirmed fit for your 2017 Toyota 86 and with it you can use ball mount # 3593. Add either 1-7/8-inch hitch ball # 19256 or 2-inch ball # 19258 depending on the coupler size on the trailer. Curt wiring kit # C56212 is a fit but instead I recommend the Tekonsha harness # 118629 because we have found their wiring products to be more reliable. An article to help you with the install is linked. For a cargo carrier I recommend the Curt # C18110 instead...
    view full answer...
  • Will Bumper Cover of 2019 Subaru BRZ Need to be Removed to Install Draw-Tite 24935 Hitch
    According to the linked installation instructions, in order to install the # 24935 on your vehicle the rear bumper cover needs to be temporarily removed. After the bumper cover is taken off, the rear bumper beam is removed. The hitch is then installed so that it's sandwiched in between the bumper beam and the body of the vehicle. Once the fasteners are reinstalled and torqued according to the values listed in the instructions, the bumper cover is reinstalled. I've linked the installation...
    view full answer...
  • Does Curt Trailer Hitch Fit 2024 Subaru Impreza Sedan Base Model
    Hi Ian, Yes, your 2024 Subaru Impreza sedan base model is compatible with and can use the Curt Trailer Hitch Receiver # C11466. The hitch will fit and there is no type of modification or cutting needed for the bumper fascia, it will be in tact. The only other thing I wanted to mention is that if you also need a trailer wiring harness, the correct fit for your '24 Impreza sedan is part # C56212.
    view full answer...
  • Wiring Code to Use for Installing ZCI Trailer Wiring in 2001 BMW X5
    Have you checked all of the wiring that runs to the taillights of your 2001 BMW X5? You should note that your vehicle uses pulse width modulation. Brake and turn signals are sent along the same wire and signals are sent as pulses which need to be deciphered. In the instructions you should use the BT wiring code.
    view full answer...
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Info for this part was:

Employee Michael H
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Michael H
Employee Jameson C
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Jameson C
Employee Jeffrey L
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Jeffrey L
Employee Jeff D
Installed by:
Jeff D
Employee Laura H
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Employee Dustin K
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Employee Wilson B
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Employee Isabelle B
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Employee Bradley B
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