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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
2011 Hyundai Accent
CURT

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

In Stock
$33.06
Retail:$62.99
You Save: 48%
Custom Fit Vehicle Wiring
Not Confirmed to Fit

2011 Hyundai Accent

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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. 1-800-940-8924 to order CURT custom fit vehicle wiring part number 55540 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 (300)
  • Q & A (0)
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CURT Custom Fit Vehicle Wiring

  • 4 Flat
  • No Tow Package
  • Trailer Hitch Wiring
  • Vehicle End Connector
  • Plug-In
  • Plug and Lead
  • CURT
  • No Converter
  • Hidden

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.


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 - no cutting or splicing of wires
    • Locate connection points in rear cargo area
    • Plug in T-connector
  • Comes with dust cap for 4-way flat connector
  • Limited 1-year warranty


Installation

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.


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.



55540 CURT T-Connector - 4 Wire

Similar to Tekonsha 118392 and Hopkins 31345

Item # 55540

Installation Details 55540 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:

Ratings & Reviews

4.8

299 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.

by:

The trailer hitch gets five stars. Unfortunately the vehicle wiring harness only gets three. It needs a safety feature such as a fuse or something so that it doesn't allow the BCM to blow which is what happened on my van. Ultimately the wiring problem was the trailer but when the BCM goes it's expensive.



by:

Like all curt products it just worked… never any fitment or issues of any kind. Shop here all the time awesome selection prices and customer service/ support always top notch!



by:

I brought my 2019 Chevy Express 15 passenger to you to determine the parts I needed for towing. Your technician inspected the vehicle and determined it didn't have the factory tow package even though it had a trailering button by inspecting the area around the spare for a harness. However, I believe I just found the factory harness near the bumper. Please confirm per the picture and advise how to recover.

Nick S. profile picture

Nick S.

10/13/2025

Hey Brian, I am not sure what that harness or plug is but it does not look like the factory tow package. For that vehicle the factory tow package harness would have been a 7 way round plug either on the bumper or behind it. This Curt harness is what you will want to install using the plugs behind the tail lights.



by:
2019 Chevrolet Express Van

i INSTALLED THE HITCH MYSELF IN ABOUT 45 MINUTES. tHE WIRING HARNESS WAS ALSO A BREEZE TO INSTALL. GREAT PRODUCTS.



by:

The Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector from eTrailer.com was exactly what I needed! The installation was quick and easy, the fit was accurate, and the value was unbeatable. Thank you for helping me upgrade my cargo van with both the trailer hitch and the wiring harness—now I’m ready to keep rolling with confidence!



by:

Even easier to install myself than their directions say. Solid build on all parts. Will absolutely use and recommend eTrailer again and again and again!



by:
Ram 2500

The Curt trailer wiring harness for the 2021 GMC Savana 2500 van was perfect! It installed extremely easily, allowed me to interconnect the trailer braking system with just a couple additional wires, and worked like a charm first time! Extremely satisfied.

Gwendolyn Y. profile picture
Etrailer Expert

Gwendolyn Y.

3/21/2025

I love to hear how how smooth the install went! What are you towing?



by:

Great product, easy install, even for people who don't have mechanical skills or a wide array of tools. I would 10/10 recommend to a friend.



by:

I got the same curt T connection again because it's so easy to use and also the bumper mount hitch .again I say it's so easy to install, i did it in less than a hour ,Love it when I use it for my Cargo trailer. Thanks E.trailier.com for your support. Also EZ cargo rails and for quick access to tie downs. Thanks Dana for the Ordering.



by:

Parts Arrived Fast and Fit Perfectly As Described, Easy Installation.



by:
2017 Chevrolet Silverado 2500

I purchased this over the other brand because according to the reviews I've read this came with a longer 4 pin wire. I routed through the brake light paneling to get a clean look and had plenty of wire to reach my 7 pin connector. No pigtail coming out of my rear doors. This was installed in a 2017 Chevy Express 2500 passenger van.



by:
2018 Chevrolet Express Van

Easy to order
Shipped fast
Easy
to install. 20 minutes and done.
Easiest I’ve ever installed, and I’ve done a few.
Wiring kit connects inside the van and yet, it appears I have some wires from the factory right down by the hitch. I may test them before I use the wiring kit.



by:
2009 Chevy Express

Installation on 2009 Chevy Express Van - the installation of this harness couldn't have been easier (especially when you pair it with etrailer's instructional video). The only error I made was on the driver side where there are two connections that will work with this harness. BE SURE TO USE THE UPPER CONNECTION (see attached picture).



by:
2007 Chevrolet Express Van

Very easy install and had no problems with quality or anything else with this purchase, including the price which was VERY FAIR!



by:

Plug n play as advertised! Connecting this harness couldn't be easier! Clear simple instructions do help, but it's pretty straightforward!



by:

Looks good only got the four pin installed so far everything delivered quick thanks



by:

as described, fit just right



by:

Easy to install plug and play A+++



by:
2022 Chevrolet Express Van

Prompt delivery



by:
2011 Chevrolet Express Van

good job curt & etrailer



by:

Plugged into existing connector and had enough wire for everything to reach. The connector side with the yellow wire went to the drivers side of my van, it didn’t specify but everything worked well



by:
2013 Chevrolet Express Van

Such a slick wiring harness. And great price.

I buy and install products from etrailer over (another site) because they filter their products. This was a professional job for a client. I don’t want crap showing up at the door. I don’t want to worry about the quality. Super appreciate etrailer for keeping my projects flowing smoothly



by:
2007 Chevrolet Express Van

Not installed yet, but looks like what I ordered. Thanks



by:
2022 GMC Savana Van

Nice products and fairly fast shipping.



by:
Chevrolet

Got last night, installed the harness this morning installed just like the video, perfect.2023 Chevy express van. Thank you so much


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Show More Reviews

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

  • Parts Needed to Install 7-Way on 2022 GMC Savana without Tow Package
    Hey Joseph, since your 2022 GMC Van doesn't have the 7-way wiring that would indicate it doesn't have the factory tow package so you'd need to go a different route to install a 7-way. You'd need to first start with the 4-way kit part # 55540 that is a confirmed fit for your Van and then convert it to a 7-way with the part # 37185 if the trailer you plan to tow does not have brakes. If you have trailer brakes you need to operate you'd instead want the # ETBC7 with a brake controller like...
    view full answer...
  • Wiring Harness for 2016 Chevy Express 2500
    Hi Chris, if you respond to the email with the link for this page you can attach your pictures and send them to me.
    view full answer...
  • Parts Needed to Install 7-Way in 2006 Chevy Express 3500 Without Tow Package
    Hi Jay, To get your 2006 Chevy Express 3500 set up with a 7-way there's just a couple parts you will need: - T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 55540 - Universal Installation Kit for Trailer Brake Controller # ETBC7 You will first install the 4-flat, which will activate your trailer's lighting functions, and you'll then plug that into the 7-way that comes with the # ETBC7, which also gives you the wiring, circuit breakers, and rest of the hardware...
    view full answer...
  • Trailer Hitch And 7-Way Wiring Harness For 2010 GMC Savana 2500 Passenger Van
    Hey John, I can definitely help with this. For the trailer hitch for your 2010 GMC Savana Passenger Van I recommend the Curt Class 4 Hitch 14090. It has a 10,000 lb towing capacity and 1,000 lb tongue weight capacity. It is also a simple bolt-on installation. For the wiring, there is a plug-in option for the 4-way, but if you want a 7-way, there will be additional wiring involved. What you can do is use the Curt T-Connector # 55540 along with the Universal Installation Kit # ETBC7....
    view full answer...
  • Higher Capacity Trailer Hitch for 2012 GMC Savana Cutaway Chassis
    Hey John, we can help but we don't have any custom fit hitches for your 2012 GMC Savana Van Cutaway so you would need to go with a weld on hitch like the Draw Tite part # 41990-07. Has a capacity of 16,000 lbs though so it would cover the higher rating you need. This has 7 inch drop brackets but if you need more than that to go from the frame down below the rear bumper we also have the part # 41990-16 which has 16 inch drop brackets instead. To install a 7-way would require you to first...
    view full answer...
  • Looking For 7-Way Wiring Harness And Brake Controller For 2022 Chevy Express 3500
    Hello Dan, thanks for reaching out. We have exactly what you are looking for. Assuming your express van currently has no trailer hookup of any kind. Here is what you will need: - Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 55540 - Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires # ETBC7 Those two kits combined contain everything you need to wire you van with both a 4-flat and 7-way trailer connector, including...
    view full answer...
  • Parts Needed to Add 4-Way and 7-Way to 2015 Chevy Express Van Without Factory Tow Package
    Hi Maurice; since you don't have the factory tow package or any trailer wiring you need to start by adding the Hopkins Plug-In Simple Vehicle Wiring Harness # 31345. Normally I would recommend the Curt T-Connector Vehicle Wiring Harness # 55540 but it doesn't have a powered converter. Since you plan to use the 4-way and 7-way simultaneously you want the converter to help reduce strain on the vehicle wiring. You will also need the Universal Installation Kit for Trailer Brake Controller...
    view full answer...
  • Parts Needed to Add 7-Way and Brake Controller to 2019 Chevy Express Van
    Hey Don! If you don't already have a 4-way that is where you need to start. You can add a 4-way using the Curt T-Connector Vehicle Wiring Harness # 55540. Once that is installed you will upgrade it to a 7-way using the Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat # ETBC7. This kit comes with the adapter, wiring, and everything else you need to add a 7-way. For a brake controller, I recommend the Redarc Tow-Pro Liberty # RED52VR. The Liberty is simple,...
    view full answer...
  • Recommended Hitch, 7-Way Connector, and Brake Controller for a 2024 GMC Savana 3500
    I would be happy to! Since you do not have the trailer package you're going to need to install two seperate wiring harnesses to add a 7-Way connector. You have to start with a custom fit 4-way because there is no way to just install a functional 7-Way. I have listed all of the parts you will need below: Trailer Hitch - etrailer Hitch item # e98861 4-Way Connector - Curt T-Connector Vehicle Wiring Harness item # 55540 7-Way Connector - Universal Installation Kit for Trailer Brake Controller...
    view full answer...
  • Recommended 7-Way Connector for a 2023 Chevy Express Cargo Van
    Unfortunately that 12 pin rectangular plug has nothing to do with the trailer wiring harness. To add a 7-way and 4-way connector to your 2023 Chevy Express Cargo van you're going to need to buy two separate harnesses. The reason for this is that the van's with the towing package came from the factory with the 7-way connectors like item # HM40975. The other ones have nothing and no one made a custom fit 7-way that just plugs in. The first connector you will need is the Curt Wiring Harness...
    view full answer...
  • Heavy Duty Hitch for 2021 4500 Chevrolet Express Cutaway
    I recommend the Curt item # C15320 trailer hitch for your 2021 Chevrolet Express 4500. This is a 2 inch class V hitch with a 16000 lbs towing capacity, 2400 lbs tongue weight, and is the heaviest duty hitch for your van. You're going to need a wiring harness to power and control your trailer lights and potentially other functions. I recommend the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector item # 55540. If you're looking to have wiring for both a 4 flat...
    view full answer...
  • Recommended Parts to Add a 7-Way Connector to a 2019 Chevy Express 2500 Van
    Unfortunately that 12 pin rectangular plug has nothing to do with the trailer wiring harness and people ask about it all the time. To add a 7-way connector to your 2019 Chevy Express 2500 van you're going to need to buy two separate harnesses. The reason for this is that the van's with the towing package came from the factory with the 7-way connectors like item # HM40975. The other ones have nothing and no one makes a custom fit 7-way that just plugs in. The first connector you will need...
    view full answer...
  • Recommended Heavy Duty Hitch and 7-Way Wiring Harness for a 2020 Chevy Express Van
    The best hitch for your 2020 Chevy Express Passenger Van is the etrailer Hitch item # e98861. This hitch is custom fit and bolts to your van with included hardware. It is a class IV hitch with a 2" receiver. It has a 10,000 lbs towing capacity and a maximum tongue weight of 1,000 lbs. This can be increased to 12,000 lbs and 1,200 lbs when used with a weight distribution system. To add a 7-way wiring harness to your van you're going to need to buy two separate harnesses. The reason for...
    view full answer...
  • Parts Needed to Add 7-Way Connection to 2006 GMC Savana 2500
    I can definitely help you find the right parts to add a 7-way to your 2006 GMC Savana 2500. Since it sounds like you don't have any wiring at all you will need to start by adding a 4-way. For that you need the Curt T-Connector Vehicle Wiring Harness # 55540. This will plug into the connection points in your rear cargo area, providing you with a 4-way to power the trailer's signal lights. From there all you need is the Universal Installation Kit for Trailer Brake Controller # ETBC7....
    view full answer...
  • Parts Needed to Add 4-Way and 7-Way to 2008 Chevy Express Van 3500
    We have just what you would need to add both a 4-way and 7-way to your 2008 Chevy Express 3500. The first thing you need is a custom fit 4-way harness with the Curt # 55540 which you will then convert to a 7-way with the part # 37185. This adapter has both a 4-way and a 7-way on it so there would be no need to unplug it to use a 4-way. If the trailer doesn't have brakes this would as far as you would need to go. If the trailer does have brakes you would need to go a slightly different...
    view full answer...
  • Trailer Wiring Kit that Fits 2017 Chevy Express Van
    Yes, we have the Curt trailer wiring harness part # 55540 which is a confirmed fit for your 2017 Chevy Express Van to add a 4-way to it.
    view full answer...
  • Trailer 4-Way Wiring Harness that Fits 2018 Chevy Express 2500 Van
    For your 2018 Chevy Express van 2500 we have the Curt trailer wiring kit # 55540 that's a confirmed fit and would work great. It's a t-connector style harness that installs by plugging inline with the taillight connectors of your van.
    view full answer...
  • Recommended 7-Way Connector for a 2016 Chevrolet Express Van
    Hey Brandon. The Curt item # 55540 is just a 4-way connector. To use a brake controller like the Prodigy P3 you'll also need a 7-way connector. If you don't have one I recommend the Universal Installation Kit for Trailer Brake Controller item # ETBC7. The item # ETBC7 kit includes a pre-wired 7- and 4-way trailer connector that mounts easily at the rear of your van with an included bracket. This kit is designed for use on a vehicle, like yours, with an existing 4-way flat trailer connector...
    view full answer...
  • Where Do I Connect My 4-Way Wiring Harness On My 2021 Chevrolet Express Van Without Tow Package
    It does not matter which 4-way wiring harness you have. It can be the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector, part # 118392, the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector, part # 55540, or the Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Flat Trailer Connector, part # 31345. They all plug in to your vehicles lights at the same spot. Personally, I am a fan of the Tekonsha T-One wiring harness. If you look at the rear...
    view full answer...
    Image 1 for
  • Wiring Connection For Passenger Side Curt Vehicle Wiring Harness on 2019 Chevrolet Express 3500 Van
    The 6-pin connector for the passenger side of the Curt T-Connector Vehicle Wiring Harness # 55540 on your 2019 Chevrolet Express is located about 8" higher behind the upper trim panel. You can follow the wiring that comes from the taillight to the correct connector. I have also included a video from the Tekonsha T-One Vehicle Wiring Harness # 118392 that shows the connector a bit more clearly.
    view full answer...
    Image 1 for
  • Recommended Hitch for a 2024 GMC Savana Van
    Congrats on the new work van! To add a hitch to your 2024 GMC Savana Van, I recommend the Curt item # 13040. This hitch is custom fit and bolts to your van with included hardware. This is a class III hitch with a 2" receiver. It has a 6,000 lbs towing capacity and a 600 lbs maximum tongue weight. These capacities can be increased to 10,000 lbs and 1,000 lbs when used with a weight distribution system. I really like the Curt hitch item # 13040 because it tucks in right below your rear...
    view full answer...
    Image 1 for Image 2 for
  • Recommended Trailer Wiring Harness for 2001 Chevy Express Van
    I do have a solution for you, however the Curt T-Connector Vehicle Wiring Harness # 55540 referenced in your question is designed to fit the 2003 to present Chevy Express Vans. This wiring harness will not work on your 2001 model. For your 2001 Express Van 3500, I instead recommend the Curt T-Connector Vehicle Wiring Harness # C55377. This is confirmed to fit your vehicle and will install by connecting directly to built-in ports located behind the trim panels in the cargo area on the driver...
    view full answer...
  • Is There a Trailer Connector for 12 Wire Plug on 2020 Chevy Express Van
    I do have an option for you but there are no plug-in seven way trailer wiring harness options for a 2020 Chevrolet Express Van. In order to install one you must first start with a four way like the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector part # 55540. This can then be converted into a seven way using the 4 to 7-Way with 4-Way Adapter part # ETBC7. This then has everything else you need to install a trailer brake controller like the Redarc Tow-Pro Liberty...
    view full answer...
  • Recommended Hitch for a 2024 GMC Savana Van Cab and Chassis
    I would be happy to! To add a hitch to your 2024 GMC Savana Van Cab and Chassis, I recommend the Buyers Products item # 3371801102. This hitch is custom fit for the cab and chassis models only and will bolt right to your van with included hardware. The Buyers Products item # 3371801102 is a class V hitch with a 2" receiver. It has a 12,000 lbs towing capacity and a 1,200 lbs maximum tongue weight. If you are planning on towing you will also need a wiring harness item # 55540 and a ball...
    view full answer...


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


Info for this part was:

Employee Zack K
Video by:
Zack K
Employee Andrew K
Video by:
Andrew K
Employee Ethan H
Video by:
Ethan H
Employee Jameson C
Expert Research:
Jameson C
Employee Joshua S
Video Edited:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Nicholas E
Test Fit:
Nicholas E
Employee Joe B
Test Fit:
Joe B
Employee Jared G
Test Fit:
Jared G
Employee Brent H
Test Fit:
Brent H
Employee Jesse B
Test Fit:
Jesse B
Employee Cole B
Installed by:
Cole B
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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