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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 # C56093
Our Price: $48.46
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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. 1-833-496-1390 to order CURT custom fit vehicle wiring part number C56093 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 (101)
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CURT Custom Fit Vehicle Wiring - C56093

  • 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.


  • 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


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

56093 CURT T-Connector - Surface Mount Technology - 4 Wire

Installation Details C56093 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 - C56093

Average Customer Rating:  4.9 out of 5 stars   (101 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.


Followed etrailer's YouTube install video, took a few hours by myself but it looks and works great!


Absolutely the easiest wiring harness to install ever!!! Would recommend this to anyone, even if you have limited mechanical skills it was a breeze, follow the video instructions and its a breeze.

Ford Explorer

Installation was easy to follow, directions were spot on. Still working as it should, on a 2020 Ford Explorer ALT. Everything was as described.

2022 Ford Explorer

robust product and built to fit my Explorer
the way the package was on receiving it, I was surprised all the products were in the box--not your issue.
I ordered on Sunday and got notification later that day that the items were picked, packaged and ready for pick up. Can't beat that


Wiring harness was received as ordered, very easy to install, worked as planned.

Product still working perfect a year later
Brian - 04/20/2022

2010 Ford Taurus

The day I received the Curt T-Connector vehicle wiring harness I tore into my trunk of my 2010 Ford Taurus SHO to install. Super easy lug and play to each taillight. Two things to do which are to mount a ground then run a power wire from trunk to the front engine bay and connect the 10 amp fuse and attach to battery connection. Only took 45 minutes which I thought was good since this was my first time. Connected 4 pole harness lead to my trailer and everything works great

Ford Explorer

Had the hitch put on my Explorer, fit great and looks like it came on it. have no complaints.

2015 Ford Taurus

Installed easily on my 2015 Ford Taurus Limited. Hid all the wiring and works great.

2010 Ford Taurus

Installation in my 2010 Ford Taurus was relatively easy, and works great! Happy customer!

2010 Ford Taurus

Looked very intimidating at first. However, it took me about an hour to install harness. Longest part was fishing the power line from trunk, to engine compartment. I would recommend it to everybody.


Was relatively easy to install (I used videos from the company's website). Has been working reliably since installation. One tip I have is to find a way to run this cable through the trunk/car wall to the outside (with grommet). Currently, I run the cable out through the closed trunk lid and the cable is showing signs of getting pinched.

Ford Explorer

Fast shipping, great quality hitch! Appears to be very heavy duty! Came with all hardware for installation on a 2022 Ford Explorer ST-Line. Would highly recommend!


Fit perfectly, and the tutorial for routing the wire was on point.


this worked so well i bought a 2nd one


The wiring is of high quality, and the Curt trailer hitch is so well made, i am impressed! The service from etrailer was quick and painless! Thank you etrailer


great product easy to install works just as it should


A perfect fit, easy installation, and flawless operation. It does exactly what it should.


it was easy to install and it work as a dvertised

2020 Ford Explorer

great service and shipping


The quality of the product was better than I expected. It works well and would probably handle almost any trailer lighting configuration. Like the fact that the trailer wiring has little demand on the cars wiring harness. High tech auto lighting easily adapted to old style trailer lighting. Installation took about two hours, mostly do to the routing of the main battery connection. My car was quite low to the ground, a little more room between the car and ground would have been helpful during installation of the main battery connection. Tried routing throw passenger compartment but couldn't find a good opening throw firewall.

2011 Ford Taurus

I purchased this hitch for a 2011 Taurus. The price was very resonable.
I'm 73 years old and I installed this by myself in less than 3 hours. The attached directions were very good and it was easy to install. I didn't have to drill any holes. The hitch included everything I needed to install the hitch. I also purchased the electrical kit. It also installed easy with great directions.
I was very pleased with my purchase and would recommend this hitch to anyone needing one.
I use it to pull a 6 x 8 foot trailer and have used it numerous times. It works great.

2013 Ford Explorer

I installed the wiring on my 2013 Ford Explorer. I was glad you have provided with a video on how to install it very easy to do. Thank you


All went well with the hitch. The videos were a big help! The wiring harness installation went well but I stopped to go to the store to get cable clamps and self tapping screws ( I used 5). Testing was easy with a trailer light tester hanging over my back seat. I could see all the test lights in my rear view mirror. Best of all it worked.

2016 Ford Taurus

Excellent product. It is well designed and well made. As mentioned in my review of the trailer hitch, I haven't installed this hitch or wiring harness on my new car but I used the same system on my 2010 Taurus several years ago. This product has worked well for several years and it should do the same on my 2016 Taurus.

Ford Explorer

I ordered this upon the advice of the customer service on the phone. Install was straight forward. The only issue was that my Explorer has a factory subwoofer on the passenger side. You just need remove the front too bolts closest to the tail gate. You can then shift the woofer enough to reach the passenger connector.

It took me about 1.5 hours, due to struggling with sub and ensuring that my wire routing to the battery was good.

Show More Reviews

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

  • Trailer Wiring that Fits a 2015 Ford Taurus
    For trailer wiring for your 2015 Ford Taurus the part # C56093 is a confirmed fit and would work well. It would be what you would need since wiring from a Ford Edge would not be compatible.
    view full answer...
  • Why is a Battery Connection Required for Trailer Wiring Installation on a 2012 ford Taurus
    The trailer wiring harness # C56093 and any wiring harness that requires a direct connection to the battery uses battery power to power the trailer lights. If not connected, it will not work and the trailer lights will not come on. Also, this offers another level of protection between the trailer wiring and the vehicle wiring. The idea is that you are isolating the vehicle from the trailer as mush as possible to limit the chances of a short on the trailer damaging the vehicle wiring.
    view full answer...
  • Does the Power Wire on Powered Trailer Wiring Harnesses Drain Vehicle Battery When Not in Use
    No it will not. It only draws power when the turn signals, brakes, or running lights are turned on and there is a trailer connected to the 4-way. Otherwise there will be no power drain at all. I attached an install video for the Curt Wiring Harness # C56093 and an FAQ on routing the power wire for you to check out also.
    view full answer...
  • Is Running the Modulite Power Wire Necessary when Installing # C56093 on 2013 Ford Explorer
    The battery connection is indeed required, in fact the trailer connector won't function without it. To save money and weight, over the last 15 years the vehicle manufactuers have been using smaller gauge wire on the taillight circuits. In the past, when larger gauge wire was used, there was plenty of capacity to power taillight circuits using power tapped directly from the harness feeding the taillight assemblies. Now that smaller gauge wire is used, its safer for the vehicle and more...
    view full answer...
  • Troubleshooting a Curt Wiring Harness that Causes 2014 Ford Taurus Blinkers to Hyperflash
    I spoke to my contact at Curt and he informed me that the only way a Curt Wiring Harness part # C56093 would cause a vehicle like your 2014 Ford Taurus to blink faster than normal is if there was a problem internal of the harness. This product does have a limited 1 year warranty, so as long as you installed it correctly and didn't damage the box you should be able to contact who you bought the harness from and they would take care of you.
    view full answer...
  • Compatibility of Curt Trailer Wiring Harness # C56093 With Back-Up Sensors on 2013 Ford Explorer
    According to my Curt representative, their # C56093 T-Connector will work just fine with your 2013 Explorer. It will not cause any interference or problems with your back-up sensors. If you'd care to look over the installation instructions or an install video, please use the provided links.
    view full answer...
  • Running Power Wire of Trailer Wiring Harness for 2018 Ford Taurus
    If you check out the 7:20 mark of the install video I attached for the Curt Trailer Wiring Harness part # C56093 you'll see our installer walk you through the process of routing the power wire of the kit to the front of the vehicle and battery. The trick is to avoid any hot exhaust components and moving parts.
    view full answer...
  • Troubleshooting Running Light Function Not Working on Curt Trailer Wiring Harness # 56093
    The Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C56093 is a confirmed fit for all models of 2016 Ford Taurus except the police interceptors. With brake, turn, and flashers it shows you are getting the power on that wire, but with the running tail lights and license plate lights not working you are not getting signal from that constant power wire. that is the brown wire coming from the module. It sounds like the ground wire needs a better connection, so...
    view full answer...
  • Does the Curt C56093 Fit a 2021 Ford Explorer Without Factory Towing Package
    I can confirm the Curt # C56093 will fit a 2021 Ford Explorer. The M at the 10th position in your VIN simply means your vehicle is indeed a 2021 model. Though we do not have a video of this being installed on a 2021 Explorer, I did include a video of an install we did on a 2013.
    view full answer...
  • Will Tekonsha Trailer Wiring Harness # 118540 Put a Drain on Battery If Installed
    With just the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118540 installed not connected to a trailer there would not way it would just put an amperage draw on the electrical system. Current has to go somewhere to draw from the battery so it just being installed without powering lights it can't drain the battery.
    view full answer...
  • What Does all Pins of 4-Way Harness having Power When Vehicle is off Indicate
    What you described is a shorted out trailer wiring converter box. When all of the pins are hot all of the time that indicates that the box had an internal short and it needs to be replaced. The Curt harnesses are known to short out a bit easier than the Tekonsha kits like part # 118599 which is a fit for your 2014 Ford Taurus so this would be what I would recommend for your replacement. Be sure to go over your trailer's wiring to determine if there are any obvious shorts on it's wiring...
    view full answer...
  • Wiring Needed for 2013 Ford Explorer Towing Boat Trailer with 5 Pin Connector
    You will want to start by adding the Curt T-Connector Vehicle Wiring Harness, # C56093, which installs quickly and easily to provide a 4-pole flat trailer connector for your 2013 Ford Explorer. The T-connector will plug directly into your existing wiring with no splicing required. Then you'll just need to run the black wire to your battery to power the converter and installation is complete. Take a look at the video that I have attached for you. To convert that 4-way to the 5-way needed...
    view full answer...
  • Can Power Wire of Curt Trailer Wiring Harness C56093 be Ran Through Vehicle Interior
    It's certainly possible to run the power wire of the Curt trailer wiring harness # C56093 through the interior of the vehicle if you wanted to. We don't have specific instructions for that but it would basically be just like you mentioned where you'd run it under the carpet and through the firewall. I attached a help article to this page for more info on this as well. To mount the 4-way like you mentioned where it's attached to the hitch you'll need to find a hole in the floor of the...
    view full answer...
  • Recommended Trailer Wiring Harness for 2022 Ford Explorer
    Tekonsha makes an excellent product, but the # 118599 harness you'd looked at won't fit Explorer Police Interceptor models. It also has a slightly lower amperage rating than the Curt # C56093, so I'd recommend going with the Curt harness. I've linked to an install video for the # C56093 harness.
    view full answer...
  • Trailer Wiring Harness Fit for a 2013 Ford Explorer
    Vehicles frequently have multiple connectors along the frame rail or behind the rear bumper. The functions of these connectors can vary from tow package wiring to backup sensor wiring to tail light wiring. The best way to determine if a plug-in style trailer wiring harness will work on your vehicle is to take the connector apart and compare them to the connectors on the wiring harness. I have attached a photo that shows what the inside of the connectors look like on the Curt T-Connector...
    view full answer...
    Image 1 for
  • Availability of a Vehicle Wiring Harness for a 2016 Ford Taurus Police Sedan
    I have a solution for you, but both of my contacts at Curt and Tekonsha confirmed with me that the standard plug in wiring harness for 2016 Ford Taurus will not work on the Police sedan model. The wiring at the rear taillights are different between the two Taurus models. The best option for you to install a trailer harness for your Taurus is to use the Tekonsha Heavy Duty ModuLite Circuit Protected Wiring Harness, # 119190KIT. The kit will allow you to hardwire in the powered ModuLite...
    view full answer...
  • Choice of Trailer Wiring Harness for 2013 Ford Explorer
    Your choice of a trailer wiring harness for your 2013 Ford Explorer will depend on the nature of the wiring on the trailer or trailers you will tow. Basic trailers, those that have lighting functions only but no trailer brakes and no accessories that require 12V power from the tow vehicle, typically use a 4-pole flat trailer connector. Trailers that have brakes and/or that require 12-volt power most often use an RV-style 7-Way blade-type connector. The linked article on trailer wiring...
    view full answer...
  • Installing T-Connector Part # C56093 on a 2011 Ford Explorer
    The wiring will be ran from the drivers side to the passenger side under the threshold trim at the rear of the cargo area. Remove any screws or cargo tie-downs holding this piece in place. The threshold is held in place by a series of plastic clips and can be loosened from the front bottom edge and removed by GENTLY prying with a large screwdriver. Take your time here, you do not want to break any of the clips. The wiring can be zip tied to the existing wiring harness under the threshold...
    view full answer...
  • Comparing Curt and Tekonsha Wiring Harnesses for 2020 Ford Explorer
    The Curt # C56093 and the Tekonsha T-One # 118599 do have some slight differences, but they both install the same way, come with the same basic components you will need to install a wiring harness and will provide you with a 4 way trailer connector. Typically we've found that Tekonsha harnesses have a bit more reliable powered converter on them, but the Curt harness in this case can handle a bit more amperage, so it would be my recommendation for your 2020 Ford Explorer. If you don't have...
    view full answer...
  • Hitch Recommendation 2013 Explorer Limited Towing Boat Trailer
    We have great options for trailer hitches that fit your 2013 Ford Explorer like the Draw Tite part # 76034 which has higher towing capacities than our other options. For trailer wiring you'd then want the # C56093 which is a custom fit option that will install easily. Since you wanted to do some towing you might be interested in etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or 2 inch drop and one with a 2-3/4 inch rise or 4 inch drop. It also...
    view full answer...
  • What is the Hitch with the Highest Weight Rating for My 2022 Ford Explorer?
    The highest weight capacity hitch we carry for your 2022 Ford Explorer is the Draw-Tite - 2" # 76320. Not only does the Draw-Tite give you 900 pounds of maximum tongue weight and 6,000 pounds of gross trailer weight capacity, it also involves an easy, no-drill installation with all hardware included. It is important to note that you will be limited to the weight capacity of your lowest component (i.e., the hitch, ball mount, or vehicle weight rating). To complete the setup, I recommend...
    view full answer...
  • 4-Way Vehicle Wiring Harness and Flat Towing Diode For a 2017 Ford Taurus
    You will need to use a separate Diode Wiring Kit # RM-154 that will be separate from Curt T-Connector Vehicle Wiring Harness # C56093 on your 2017 Ford Taurus. The diode kit will only tie into the individual brake lights and running lights on the rear of your Taurus. The diodes will prevent any back feed from the vehicle to the towed vehicle. I have linked an installation video for the diodes on an older 2008 Taurus that will help you see how the diodes are wired in. The diodes will go...
    view full answer...
  • Availability of a Trailer Hitch that is Hidden For a 2013 Ford Explorer
    All of the trailer hitches we carry for the 2013 Ford Explorer will have the receiver and part of the crosstube visible beneath the rear fascia on the vehicle as you can see in the video I have linked showing installation of Curt hitch # C13386. If you plan on doing some towing with the hitch I also recommend etrailer ball mount kit # 989900. It comes with 2 ball mounts, 2 balls, a hitch pin with clip, and a storage bag. And for trailer wiring you can use # C56093.
    view full answer...
  • Troubleshooting Wiring On Trailer And 2013 Ford Explorer With No Factory Tow Package
    If you are only having problems with one light, you can check to see if you have a ground problem on your trailer that is hooked up to your 2013 Ford Explorer. You want to make sure that the ground wire (usually white) on the trailer connector is securely attached to the trailer frame. If you have a folding trailer tongue, attach the ground connection to the trailer frame, behind the tongue hinge. Check the ground area for any corrosion or paint, or dirt build up. If any is present, clean...
    view full answer...

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