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Curt T-Connector Vehicle Wiring Harness with 7-Way Trailer Connector

Curt T-Connector Vehicle Wiring Harness with 7-Way Trailer Connector

Item # C56413
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Custom Fit Vehicle Wiring

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Custom Fit Vehicle Wiring C56413 - 7 Blade - Curt
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Quickly and easily install a 7-way, RV-style trailer connector on your vehicle with this custom harness. Connector plugs directly into existing tow connector on your truck - no cutting, splicing or tapping required. Call 800-298-8924 to order Curt custom fit vehicle wiring part number C56413 or order online at etrailer.com. Free expert support on all Curt products. Guaranteed Lowest Price and Fastest Shipping for Curt T-Connector Vehicle Wiring Harness with 7-Way Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
  • All Info
  • Reviews (13)
  • Q & A (15)
  • Videos (2)
  • Photos
  • Why etrailer?

Curt Custom Fit Vehicle Wiring - C56413

  • Custom Fit
  • Trailer Hitch Wiring
  • Curt
  • 7 Blade

Quickly and easily install a 7-way, RV-style trailer connector on your vehicle with this custom harness. Connector plugs directly into existing tow connector on your truck - no cutting, splicing or tapping required.


  • Provides a 7-way, blade-style trailer connector at the back of your vehicle to power your trailer's signal lights
    • Compatible with 4-pole, 5-pole, and 6-pole adapters (sold separately)
  • Connects quickly and easily - no cutting or splicing of wires
    • Locate connection point behind the rear driver-side axle along the frame rail
    • Plug in connector
  • Comes with protective cover for 7-way connector
  • Includes zip-ties for securing loose wires


  • Maximum amperage:
    • Stop/turn lights: 10 amps per circuit
    • Tail lights: 10 amps per circuit
    • Reverse lights: 10 amps per circuit
    • Power circuit: 30 amps per circuit
    • Trailer brakes (3 axles / 6 brakes): 20 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 rear bumper. After plugging in the connector, route the 7-way end of the harness along the inside of your bumper toward the center of your vehicle.

Once installation is complete, the 7-way connector will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure.

It is recommended that you use a small amount of grease on all electrical connections - the plug on your automobile and the 7-pole connector itself - to help prevent corrosion.

56413 Curt T-Connector Vehicle Wiring Harness with 7 Pole Trailer Connector

Installation Details C56413 Installation instructions

This Product Fits The Following Vehicles

California residents: click here

Video of Curt T-Connector Vehicle Wiring Harness with 7-Way Trailer Connector

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Review of Curt - Wiring Harness - C56413

Customer Reviews

Curt T-Connector Vehicle Wiring Harness with 7-Way Trailer Connector - C56413

Average Customer Rating:  4.9 out of 5 stars   (13 Customer Reviews)

Quickly and easily install a 7-way, RV-style trailer connector on your vehicle with this custom harness. Connector plugs directly into existing tow connector on your truck - no cutting, splicing or tapping required.

- C56413

This works perfect on a 2019 Ford F150… I was able to determine that the wiring harness on my truck would except this plug and still let me utilize the four way… Make sure to look at the harness at the rear of the vehicle before you order anything universal… This saved me a lot of time… The hardest part was installing the bracket for the seven way. 761840

- C56413
2019 Ford F-150

Perfect fit for my 2019 Ford F-150 XLT. It fits like a glove and feels as sturdy as can be. I will always buy hitches from etrailer & Curt. 795696

- C56413

The connectors was a little to wide for the factory connectors to fit , so I took some sand paper and sanded down the edges and it fit perfectly. Easy is the word on the install and it works perfectly. I recommend and if it’s not fitting , just side those outside ridges down and it will slide right in and make a perfect connection . Took less than 10 minutes from start to finish. 791335

- C56413

The order arrived quickly and exactly as ordered. However, the bracket I. ordered did not have holes that matched the trailer cable connector requiring me to drill for correct fitting. I did have a technical issue which I was helped with by Ricky. He was helpful in trying to solve this problem. 789591

- C56413

Works perfectly. Super easy install plugs write in with ease. 782335

- C56413
2015 Ford F-150

The hitch fit perfectly. It was definitely worthwhile to watch the videos on the installation, as that was hugely helpful. Really pleased with the quality and finish of the hitch, even though it tucks up perfectly and you cannot really see it. The price was very reasonable and the hitch arrived in only a couple of days. I did choose to install the 7-way Trailer Connector into the bumper cover, as there is a hole behind the plastic already for the factory connection, as you can see in the pictures. A 2 inch hole saw made quick work of that part. The T-Connector wiring harness was awesome. This was definitely plug in and ready to go just like the video. In general, great price and product support. Thank You 779293

- C56413

Have not installed yet but looks right 769798

- C56413
2019 Ford F-150

Correct product as promised , next day delivery right on time. Great company !! 768392

- C56413

Very easy to install, once you find the right part of the harness. Mine was on the top of the frame rail. 766834

- C56413
2019 Ford F-150

As listed. Thanks 749108

- C56413
2019 Ford F-150

Very easy install with helpful video 747354

- C56413
2019 Ford F-150

Delivery was super fast and the product worked perfectly 745734

- C56413
2018 Ford F-150

Fast service and Shipping 739453


Ask the Experts about this Curt Custom Fit Vehicle Wiring

  • 7 Way Connector for 2019 Ford F-150 without Factory Towing Package
    You can install a 7 way connector on your 2019 Ford F-150 by using the Curt T-Connector # C56413, which will plug into the factory supplied 4 way connector plug on your vehicle and give you a fully functioning 7 way connector. If you've got a plastic bumper, I don't see any reason why you would not be able to cut a hole for the plug to be installed next to the license plate holder; however there is not a specific installation kit that makes this possible and you would need to do the cutting...
    view full answer...
  • 7-Way and Brake Controller Solution for 2018 Ford F-150 without Tow Package
    Your 2018 Ford F-150 without the tow package and 7-way does have brake controller wiring currently so once you have the 7-way part # C56413 installed you'd be able to easily install a brake controller using the truck's factory wiring. The P3 part # 90195 and the install harness part # 22292 would be a really great and easy to install option. This is the most advanced and easiest to use brake controller on the market so I recommend it highly.
    view full answer...
  • Mounting Bracket that Fits 7-Way of Curt 7-Way Kit C56413
    Sorry to hear that the bracket didn't fit. We have the part # PK12711U which has slotted mounting screws which will allow the 7-way of your kit # C56413 to mount up.
    view full answer...
  • 7-Way Trailer Wiring Kit Recommendation for 2018 Ford F-150
    The correct 7-way kit for your 2018 Ford F-150 that matches the rectangular connectors you sent us a picture of is the Curt part # C56413. I attached a picture our installers took that shows this connecting to same connectors.
    view full answer...
  • Can 4-Flat Still be Used on 2018 Ford F-150 After Installing Curt 7-Way 56413
    I reached out to Curt, who told me that the Curt T-Connector Vehicle Wiring Harness with 7-Way Trailer Connector # C56413 will install inline with the 4-way on your 2018 Ford F-150, so you will not have access to your truck's 4-way. That said, if you still need to plug in a trailer with a 4-way you still can, you will just need the Pollak 7 Pole to 4 Way Connector Adapter # PK12716. I have added links to video reviews of both parts for you to check out as well.
    view full answer...
  • Wiring Harness For 2020 Ford F-150 Without Tow Package
    I am happy to help John. The wiring harness that you need for the 2020 Ford F-150 without a tow package is Curt T-Connector Vehicle Wiring Harness with 7-Way Trailer Connector part # C56413 which will plug right into a plug behind the drivers-side rear bummer and give you a 7-Way plug at the rear of the truck.
    view full answer...
  • Wiring Harness For 2016 Ford F-150 Without Tow Package
    You are correct you will need a hitch as well as wiring harness and ball mount to tow your trailer. My hitch recommendation is the etrailer Trailer Hitch Receiver # e98871. It comes in a matte black finish that not only resists corrosion but also is less susceptible to scratches than glossy finishes. The Curt T-Connector Vehicle Wiring Harness with 7-Way Trailer Connector # C56413 is a great choice connecting quickly and easily with no cutting or splicing of wires so you'll have...
    view full answer...
  • Will Curt 7-Way Trailer Connector for 2019 Ford F-150 Charge a Trailer Battery
    The Curt harness you purchased (thanks by the way) part # C56413 is a fully functioning 7-way connector after you install it so it has a 12 volt circuit supplying power to your trailer's battery. With that being said you won't be able to charge up your trailer battery if it dies from the truck because there just isn't enough amperage. It's meant to maintain the trailer's battery while traveling to keep the battery from dying. To charge a trailer battery you need something like part...
    view full answer...
  • 7-Way Trailer Wiring Recommendation for 2017 Ford F-150
    For your 2017 Ford F-150 we have the 7-way kit part # C56413 as a confirmed fit. This plugs into the trailer wiring connector that is present at the truck frame rail and gives you a functional 7-way. I attached an install video for this for you to check out on a 2018 F-150 as well.
    view full answer...
  • Hitch and Wiring Recommendation For 2019 Ford F-150 XLT
    The 2019 Ford F-150 XLT with the hitch ball bumper would in fact need the hitch that fits the trucks without a factory hitch. Fords that are considered with factory hitch will have an actual receiver tube instead of the bumper with built in hitch ball mount. The Curt Trailer Hitch Receiver Class IV hitch part # C14017 is a great choice. It is rated for 1,000 lb tongue weight and does not require drilling for installation. It is also a concealed cross tube design so the only portion of the...
    view full answer...
  • Brake Stoplamp Switch Wire Color For Brake Controller Install on 2016 Ford F150
    You'll be looking for a purple and white wire, but if you're wanting to install a brake controller there is a plug and play option that would require no cutting or splicing. If you look at the installation video I've linked for you, you can see that the brake controller connector is located behind the dash, all you'll need is the correct wiring harness to connect the controller and the vehicle and you'll be good to go. If you're using a Curt brake controller like the # C51120, you would...
    view full answer...
  • Is etrailer.com Trailer Hitch Visible on a 2020 Ford F-150
    The etrailer.com Trailer Hitch Receiver # e98871 has a hidden crosstube design which gives you a very clean look that is complimented by the matte black finish that matches black finish that you'll find on your 2020 Ford F-150. In all honesty, when looking for a low profile trailer hitch that looks like it's designed for the vehicle you can't go wrong with this trailer hitch. I am attaching an installation video, written instructions, and some photos so you can get an idea of how to...
    view full answer...
  • 10K Trailer Hitch and 7-Way Wiring Needed for a 2017 Ford F-150
    The only trailer hitch that is rated for 10K right out of the box for your 2017 Ford F-150 is the Curt # C14017. All of the other options require a weight distribution system to achieve this weight rating. With that being said, it is important to note that you shouldn't exceed the listed trailer weight rating for your F-150 either. According to the Ford Towing Guide only about half of the 2017 F-150 configurations have the ability to safely tow up to at least a 10K trailer so you'll want...
    view full answer...
  • How to Upgrade from Factory 4-Way on 2018 Ford F-150 To 7-Way Without Using an After-market Bracket
    It is possible to do what you are trying to do but not with the Hopkins plug part # HM40975 because it is designed as a replacement part for a 7-way on your truck. It does not come with the harness that you need to activate towing functions with the square connectors. You can cut the hole with a dremel tool and use a Ford adapter 9U5Z 14489 MAA Plug and harness FL3Z 13A576 B Harness but you will still need to cut out that hole. I recommend to use the Curt T-Connector Vehicle Wiring Harness...
    view full answer...
  • Trailer Hitch and 7-Way Wiring Kit for 2019 Ford F-150
    The Curt hitch part # C14017 is a really great option for your 2019 Ford F-150 as it's mostly hidden and has great towing capacities. Then for a 7-way all you'd need is the part # C56413 and you'd be set with the mounting bracket # 18138. I attached install videos for both of these for you to check out as well.
    view full answer...

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

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Info for this part was:

Installed by:
Jeff D
Expert Research:
Jameson C
Video by:
Joshua S
Video Edited:
Chris R
Updated by:
Sarah W
Updated by:
Kristina F
Written by:
Ronnie R
Test Fit:
Ryan G

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