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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 # C56300
Retail:$92.81
Our Price: $61.40
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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 C56300 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 (35)
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CURT Custom Fit Vehicle Wiring - C56300

  • 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.


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 in rear cargo area
    • Plug in T-connector
    • Run hot lead to car battery
  • Includes a tail light converter to ensure that your vehicle's wiring matches that of your trailer
    • Powered module connects directly to battery to avoid overloading 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
  • Limited 1-year warranty


Installation

This custom-fit T-connector plugs into your vehicle's wiring harness, which is located in your rear cargo area. You will have to remove the trunk floor coverings and the rear and side scuff panels to access this harness. Once you've plugged in the T-connector, run the hot lead up 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 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.


Because most trailers run on a two-wire system - wherein the brake and turn signals are carried on one wire - the separate brake and turn signals from your vehicle's three-wire system need to be combined so they are compatible with the wiring system of the trailer. This converter combines the brake and turn signal functions of your automobile so that they run on one wire to properly activate your trailer's tail lights. Note: This will not affect how the tail lights on your vehicle operate.


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.



56300 Curt T-Connector Vehicle Wiring Harness with 4 Pole Trailer Connector

Installation Details C56300 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:


Customer Reviews

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - C56300

Average Customer Rating:  5.0 out of 5 stars   (35 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.

by:

Works as it says, very easy to install once you access the wiring as the harness just plugs in! Thanks for providing such an easy product that works!



by:
Mazda

I had a mechanic install the harness; he was pleased as it was just thread and click into the vehicle’s electrical system ( Mazda MX-5).



by:

Great service, great products and great prices. etrailer knocks it out of the park every time!



by:
2017 Mazda MX-5 Miata

Installed the Curt ca wiring kit and it worked perfectly, though lots of trouble running the wire through the car to the battery. Proud of the finished set up. And it is a sanitary way to handle the trailer wiring.

Bruce

3/22/2019

Has worked flawlessly for towing my tire trailer to autocross events.



by:

Got it quickly. and should be easy to install from their videos'



by:
2016 Mazda Miata

I installed a trailer hitch on my new 2016 Miata. The electrical harness worked great and was easy to install. You have to run a power line from the battery under the hood to the trunk. It was a little tedious, avoiding anything that moves or that gets hot. But I just followed the brake lines. Very satisfied. I would recommend it.



by:

A bit challenging to get to wires but the harness was simple to install.

J D.

10/27/2021

No problems.



by:
Mazda Miata

I wanted a trailer hitch for my new Miata. The etrailer website was simple to use in making my selection, and it was delivered within a week of ordering. I recommend using etrailer to anyone in the market for a hitch.



by:
2018 Mazda 6

This wiring harness is as advertised. The instructions were complete and easy to follow. Routing the power wire up to the battery and finding a way through the firewall was the most difficult part of the process, but with a little planning and persistence it all worked out just fine. I am very satisfied with the whole process.



by:

Works great, pain to run the battery power cable but other than that a breeze.



by:

Jameson and Donna P. were very helpful with my order. An item was out of stock and Donna quickly noticed this and ordered it directly from the manufacturer and updated my delivery date and my shipping address. Everything arrived on time and that was appreciated. Jameson answered my initial concerns and explained in detail what I would need to complete the job. Thanks to both and etrailer. I never realized there was so much to learn about towing a trailer, but they made it easy to learn.



by:
2020 Mazda MX-5 Miata

I have not installed the kit yet, but is of quality stuff. Looks to be all there. it arrived in vert short time.



by:

Product worked as advertised. Installation was very easy!



by:

Great product . works great and was easy to install. Thanks

Revis

3/10/2022

This is a great product and was easy to install on my MX5



by:

Great product. Does what it promises.



by:

excellent service part ordered works gr eat

Anthony P.

10/7/2021

great no problems easy to install



by:

It was a great kid the hatch went on just like you said and the wire ring kid did as well no issues, thanks again.



by:

Dedrick

1/6/2024

Working great. Easy to install.



by:
2018 Mazda 6

Scott

8/5/2023

works perfectly. The wiring harness had a ton of wires so I had the local trailer shop where I bought my trailer install it. All is good.



by:

Good quality.



by:

Gene

10/7/2022

Perfect fit. No alterations needed.



by:

Worked great it was a little tough to wire up but it did it's job!



by:
2019 Mazda CX-3

Good quality product.
Delivery time
is fast.
Very easy to install.
My car is a Mazda CX-3, 2019



by:

Sturdy install; great fit; quite please d.



by:

Made wiring easy


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Show More Reviews

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

  • Trailer Hitch For A 2021 Mazda MX-5 Miata
    For your 2021 Mazda MX-5 Miata, we have the Curt Trailer Hitch # C11435. This is a class I trailer hitch, that has a maximum towing weight of 2,000lbs, and a max tongue weight of 200lbs. If you're needing wiring, we have the Curt T-Connector # C56300. This is an easy to install, plug-and-play harness that will plug into your vehicle's factory wiring harness. Wiring is needed to be able to provide lights to your trailer while driving, that was you're compliant with the law and for safety. Finally,...
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  • How to Connect a Bushtec Quantum II Trailer to a 2016 Mazda Miata
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  • How Do I Run The 12 Volt Wire To The Battery When Installing Wiring On A 2021 Mazda MX-5 Miata?
    Running the 12 volt power power wire for the Curt # C56300 on your 2021 Mazda Miata can definitely be tricky. This really should be connected to the battery as this will keep the wiring from causing any interference with the vehicle's computers. With that said, I included an install video we have of this wiring harness being installed on a 2020 Miata that should help the process. What we did was follow the brake lines up to the engine bay and made routing them a lot easier. Following these...
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  • Trailer Hitch & Wiring For 2020 Mazda 6 Signature For Towing
    We can get your 2020 Mazda 6 set up for towing, and the hitch will indeed fit your Signature model, which I verified with the manufacturer for you. I'll go ahead and list out all of the parts you will need for this: - Curt Trailer Hitch Receiver # C11356 - Curt T-Connector Vehicle Wiring Harness # C56300 - Curt Drawbar # C45016 - Pin and Clip # F-4 - 1-7/8" Hitch Ball # C40001 or 2" Hitch Ball # C40018 The hitch is a simple bolt-on installation with no drilling required so it is super...
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  • Will Trailer Wiring for 2016 Mazda CX-3 Drain Battery if Not Connected to Trailer
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  • How to Carry Thule Tepui Rooftop Tent with 2017 Mazda CX-3
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  • Curt Trailer Wiring Harness that Fits 2016 Mazda MX-5 Miata
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  • Which Trailer Wiring Harness for 2019 Mazda CX-3
    Although both the Curt # C56300 and the Tekonsha # 118718 are both fits for your vehicle, I'd personally choose the Tekonsha harness, as we've found that they tend to be a bit more reliable over time. If you haven't yet decided on a hitch, I'd recommend the US made Curt # C11418. For a ball mount, Curt recommends the # C45521. For a trailer ball, use # 19256 for a 1-7/8 inch ball or # 19258 for a 2 inch. I've linked to install instructions and an install video for the hitch.
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  • Trailer Hitch And Wiring For A 2021 MX-5 Miata
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  • Dim Trailer Lights with Curt T-Connector Installed on 2017 Mazda CX-3 with Vehicle Off
    If sounds like you may have LED lights on the trailer you are towing your 2017 Mazda CX-3 with. What is likely happening is that is a little bit of power on the lighting circuits for the T-Connector # C56300 and since LEDs use next to no power that little bit of power is getting through to the LEDs. I confirmed this with my contact at Curt. If this is the case then the only things you can really do is just unplug your trailer wiring when you will be leaving it parked for long periods of...
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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 Jacob T
Video Edited:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Cole B
Installed by:
Cole B
Employee Chelsea B
Written by:
Chelsea B
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
Kristina F
Employee Isabelle B
Updated by:
Isabelle B
Employee Conner L
Test Fit:
Conner L

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