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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 # 56082
Our Price: $37.27
Custom Fit Vehicle Wiring

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Shipping Weight: 0.73 lbs
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56082 - Custom Fit CURT 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 - no cutting, splicing or tapping required. Converter is made using SMT to ensure superior performance. 1-800-940-8924 to order CURT custom fit vehicle wiring part number 56082 or order online at 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 (21)
  • Q & A (0)
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CURT Custom Fit Vehicle Wiring - 56082

  • Custom Fit
  • Trailer Hitch Wiring
  • 4 Flat
  • 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 - no cutting, splicing or tapping required. Converter is made using SMT to ensure superior performance.


  • 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 - no cutting or splicing of wires
    • Locate connection points in rear cargo area
    • Plug in T-connector
  • Includes a tail light converter to ensure that your vehicle's wiring matches that of your trailer
  • 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


  • Maximum amperage:
    • Stop/turn lights: 3 amps per circuit
    • Tail lights: 5 amps per circuit
  • Limited 1-year warranty


This custom-fit T-connector plugs into your vehicle's wiring harness, which is located behind the driver's-side and passenger's-side interior trim panels in your rear cargo area.

Once installation is complete, the 4-way connector will be stowed within the jack storage compartment of 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.

Tail Light Converter with Surface-Mount Technology

A tail light converter is built into this T-connector. 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.

56082 CURT T-Connector - Surface Mount Technology - 4 Wire

Installation Details 56082 Installation instructions

This Product Fits The Following Vehicles

California residents: click here

Customer Reviews

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 56082

Average Customer Rating:  4.8 out of 5 stars   (21 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 - no cutting, splicing or tapping required. Converter is made using SMT to ensure superior performance.

2016 Mazda Miata

Listed as a wiring kit for the 2016 Miata. According to my Miata mechanic the kit is a mismatch for the vehicle; for example, two connectors in the kit leading to a harness with six wires in. He refused to attempt an installation. Called etrailer product support, and their solution is to return the kit.


Had it installed, mechanic said no problems putting it on. Looks great.

2012 Mazda Miata

Didn't have one of these when I had a trailer hitch installed on my 2012 Mazda Miata MX-5 and decided to have one this time. The hitch will be installed later this week but I installed the wiring myself this time and it only took me about 20 minutes, which also included the reading of the instructions and dodging the raindrops because the little car was outside at the time.


Instructions and videos helped me to make the purchase and install. Removing the plastic covers in the trunk was easy since I learned where the connection points were. Absolutely no wires were exposed after install which made it look factory.
Never had any problems but traded the Miata in May 2020 for a bigger vehicle.

2012 Mazda Miata

The Miata trailer hitch is finally on. I was going to install it myself but decided that drilling the holes in the frame was not my cup of tea. So I took it to a garage that does that sort of thing and it is great. Fit perfect and looks great on the car. Love it...

2006 Mazda MX-5 Miata

Thanks to the photos, the instructions were simple. It was easy- peazy. Installation was "plug and play." It is installed in my 2006 MX-5 which I occasionally use to tow a small teardrop. This replaced a unit (same product) that was installed in 2011 which started failing intermittently. It lasted 9 years and 45,000 miles, I am OK with that.

2010 Mazda Miata

Got it in, had this harness installed in my miata in less than 10 minutes, honestly it couldn’t have been easier, plug n play, no pics cause it’s hidden


Install yesterday, everything went well. Needed to buy a drill bit I didn't have but that was it. I chose not to drop the muffler, which only added about 30min. to the injstall.


Best price and fast shipping. Quality product.
is one of the "Bench Mark" Online retailers.


Perfect fit. Works great. Easy to install.


Working perfectly, use once or twice a week.


easy to hook up using the instructions and the product working very well.


Excellent product.

2010 Mazda MX-5 Miata

Perfect! Simple and fast.

2008 Mazda MX-5 Miata

Easy web site to use for order and arrived very quickly.




2007 Mazda MX-5 Miata

Pleasure to deal with this company.



A trully easy to install good Product


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

  • Trailer Wiring Installation on a 2012 Mazda MX-5 Miata
    It technically doesn't matter which side you start on though usually you start installation on the side with the shorter wires because that is the side the converter will mount on. In this case that would be the right (passenger's) side of the vehicle. You are correct, step 3 in the instructions for wiring harness # 56082, linked for reference, should say to route the connectors with the yellow wires to the drivers side and repeat the process. The issue is that almost every other wiring...
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  • Estimated Time for a Professional to Install a Trailer Hitch and Wiring on a 2006 Mazda Miata
    Curt suggests that the professional install time for hitch # C11028 on a 2006 Mazda Miata is 90 minutes. The wiring harness, # 56082, should install in half that time at most since it just plugs in line with the vehicle tail light wiring and does not require a power wire from the battery. So beginning to end I would estimate 2 to 3 hours tops. This is based on a professional installation by someone who has installed hitches and wiring harnesses before.
    view full answer...
  • Lighting Kit to Flat Tow a 1990 Mazda Miata
    There are a number of kits that are confirmed to fit your 1990 Mazda Miata that contain all the necessary diodes. I recommend the Roadmaster # RM-154, which has four Hy-Power diodes and a 4-way flat connector for both your Miata and RV. I've included a link to a video review of this kit, as well as a link to a video showing an example of an installation.
    view full answer...
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  • Comparing Curt and Hopkins Trailer Wiring Harnesses for 2015 Mazda Miata MX-5
    There are definitely pros and cons to the two trailer wiring options you have for your 2015 Mazda MX-5. The Hopkins part # HM11141824 costs a bit more, has a more involved install, BUT once installed is the better choice as it's powered converted box allows the trailer lighting to draw it's power straight from the vehicle battery and not the taillight circuits. This gives you some peace of mind. The Curt # 56082 costs less and install a bit easier but since it draws power from the vehicle...
    view full answer...
  • Hitch Availability For a 2006 Mazda MX-5 Miata
    The only hitch available for a 2006 Mazda MX-5 Miata is the CURT Class I 1-1/4 Inch Hitch, part # 11028, that you have referenced. It has a gross towing weight capacity of 2,000 lbs and a tongue weight capacity of 200 lbs. The ball mount and pin / clip are included. If you will be towing with this hitch you will also need either the Tow Ready 1-7/8 Inch Hitch Ball, part # 19256, or Tow Ready 2 Inch Hitch Ball, part # 19258. For a trailer wiring harness you will need the CURT T-Connector...
    view full answer...
  • How to Connect a Bushtec Quantum II Trailer to a 2016 Mazda Miata
    To tow your motorcycle trailer with you 2016 Mazda Miata you will need both a hitch and a vehicle wiring harness. For the 2016 Miata, if you do not already have a hitch, them I recommend the Curt Trailer Hitch Receiver, # C11435.The hitch will install to your vehicle without any drilling or welding required. For a wiring harness, the Curt T-Connector Vehicle Wiring Harness With 4-Pole Flat Trailer Connector, # C56300 is confirmed to fit the 2016 Mazda Miata. The connector will plug into...
    view full answer...
  • Comparing Curt Trailer Hitches for a 2008 Mazda MX-5 Miata
    Curt trailer hitch 11004, which we do not carry, fits 2006 to 2008 MX-5 Mazda Miatas excluding models with the power retractable hardtop. Hitch # C11028 which we do carry fits 2--6 to 2013 MX-5 Miatas excluding models with the appearance package. So basically they fit different models. If you go with hitch # C11028 and plan on doing some towing, first check the owners manual to make sure it is permissible to do so and, if it is, for the towing capacities of the vehicle. You will need a...
    view full answer...
  • Weight Of Curt Trailer Hitch Receiver # C11028 For a 2014 Mazda MX-5 Miata
    The Curt Trailer Hitch Receiver # C11028 for your 2014 Mazda MX-5 Miata weighs 26lbs. Curt recommends using the Ball Mount # C45521 in the rise position with either a 1-7/8" # C40001 or 2" # C40018 ball to match your trailer coupler if you intend to pull a small trailer. You will also need a Hitch Pin & Clip # F-4 to secure the ball mount in the receiver. The Curt T-Connector Vehicle Wiring Harness # 56082 will provide you a 4-way flat connector that most small trailers will require to...
    view full answer...

Do you have a question about this Custom Fit Vehicle Wiring?

Info for this part was:

Employee Lindsey S
Updated by:
Lindsey S
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
Kristina F
Employee Isabelle B
Updated by:
Isabelle B
Employee Michael H
Expert Research:
Michael H

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