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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

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Custom Fit Vehicle Wiring

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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. 1-800-496-5010 to order CURT custom fit vehicle wiring part number C56431 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.
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  • Reviews (68)
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CURT Custom Fit Vehicle Wiring

  • Custom Fit
  • Trailer Hitch Wiring
  • 7 Round - Blade
  • CURT

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.


Features:

  • Provides a 7-way, blade-style trailer connector at the back of your vehicle to power your trailer's signal lights
  • Connects quickly and easily - no cutting or splicing of wires
    • Locate connection point behind the driver side rear bumper.
    • Plug in connector
  • Comes with protective cover for 7-way connector
  • Includes zip-ties for securing loose wires
  • Mounting bracket (C58000) sold separately


Specs:

  • 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


Installation

This custom-fit T-connector plugs into your vehicle's wiring harness, which is located behind the driver 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. If necessary, secure the harness with the provided cable ties.


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.



56431 Curt T-Connector - 7-Blade RV

Item # C56431

Installation Details C56431 Installation instructions

This Product Fits The Following Vehicles





Customer Reviews

Curt T-Connector Vehicle Wiring Harness with 7-Way Trailer Connector - C56431

Average Customer Rating:  4.8 out of 5 stars   (68 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.

- C56431
by:

Put this kit on my 2020 Lariat ranger. Only complaint was the supplied self taping screw broke off when trying to install and the zip ties was to short. Everything else was very simple easy install. I wanted a factory look so I ordered the Hopkins 7way/4way plug separately.



- C56431
by:

Easy to use and super easy to install. Not many options for the Rangers, but, this worked exactly as needed. Didn’t need a bracket, I used the stock location in the rear bumper. I drilled it out, drilled the factory bumper back plate and ran 2x 1/4-20 machine screws through it.



- C56431
by:

Very simple installation. Works perfectly. Thanks etrailer again for great information



- C56431
by:

Great product no problems at all. Installation Simple.



- C56431
by:
2019 Ford Ranger

I remember when things weren't plug and play. Those days sucked, lol. Super easy install. Unplug the factory harness, plug in this jumper harness between. On my 2019 Ranger there is a factory cut out in the bumper for a 7-way. So, I used a 1.5" hole saw to make an opening in the plastic bumper cover to flush mount the plug and give it a factory look. Gave it four stars because I'm a stickler for good directions and these didn't specify what the white wire with the ring terminal end is or where to attach it. I know what it is, but what if I didn't?



- C56431
by:

It is perfect easy to instal took me 7 min works great



- C56431
by:

Easy to attach, instructions plane and simple. Item works great no problems.



- C56431
by:

This would get 5 stars if it came with the OEM 7/4 way connector. All Rangers have a place on the number to install that type of plug, but this comes with an oddball that needs an extra bracket to mount to the hitch. I bought the right plug and now have one I don’t need. Otherwise it’s easy t9 install and works just as it should.



- C56431
by:

It looks great!



- C56431
by:
2021 Ford Ranger

Works as advertised. Might be helpful if they would indicate which mounting bracket hole pattern matches this plug.



- C56431
by:
2020 Ford Ranger

This item was just what I needed I had the Sleeve from Ford but no cable or plugs to install under the truck bumper and this fit right into the factory wiring for my New 2020 Ford Ranger. If you don't have a 7 way trailer plug this kit will fit! Thanks!!



- C56431
by:

The hitch went in without a hitch.The wiring harness plugged in easily. The mounting bracket for the plug-in didn't match the holes but a drill took care of that. Less than 45 minutes to install! All in all, nice.



- C56431
by:
Ford Ranger

This is one of many orders I have placed with etrailer.com. I purchased this for my Ford Ranger. Perfect fit the first try. If you need trailering items for your truck, boat, Jeep, or motorhome this is the place to shop.



- C56431
by:

Super easy and everything you need for a quick and clean instal.



- C56431
by:
Ford

Easy to install! I bought a Ford Motocraft OEM 7pin & regular connector that was Oval shaped to fit the punch out in my bumper. Worked great and was a seamless install!



- C56431
by:

wasn’t even in the package. at first scared that i was missing a piece.


Comments
Customer Service will reach out to you.
-- Etrailer Expert Sierra K - 12/23/2021


- C56431
by:
2021 Ford Ranger

Been buying from each writer for many years always have good service and a quality product



- C56431
by:

Exact fit easy to install



- C56431
by:
2019 Ford Ranger

Fit perfectly. Quality materials.



- C56431
by:
2021 Ford Ranger

It was very easy just plug and play!!!



- C56431
by:
2019 Ford Ranger

My only complaint is they dont sell the part that goes in the cutout in a Ford Ranger bumper. I ordered it online but doubt if it will accept the Curt Harness. Everything else was great! Great information and videos on their website!



- C56431
by:

Easy plug and play. No issues a year down the road.



- C56431
by:

Simple install



- C56431
by:

Plug and play, love this harness self tapping screw for ground and 3 wire ties, done in 20 min



- C56431
by:
2020 Ford Ranger

Good products and easy installation. Thanks for ever thing.


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Show More Reviews

Ask the Experts about this CURT Custom Fit Vehicle Wiring



  • Troubleshooting Lights With Hitch Cover and Curt Harness on 2019 Ford Ranger
    The issue is almost certainly with the hitch cover that you are using after you installed with the Curt T-Connector Vehicle Wiring Harness with 7-Way Trailer Connector # C56431. A number of hitch covers have been known to wreak havoc with Ford trucks and cause faults in the dash when used so I recommend removing the hitch cover and the issue will abate.
    view full answer...
  • Wire Color Code for Curt 7-Way Wiring Harness for Ford Ranger
    The backup lights wire you are looking for in the Curt 7-Way Harness, # C56431, is the Red wire. If you test that wire and find that it doesn't have any power, then you will want to check to make sure there is a 10 amp fuse in slot 34 in the engine compartment fuse box. The tow package back up lights are on their own fuse and sometimes manufacturers are known to forget that fuse from time to time. The color code for this harness is as follows Black - 12 volt Battery Power Brown - Tail...
    view full answer...
  • When Installing the Curt C56431 on a 2019 Ford Ranger Does the Factory 4 Way Still Work
    Yes. The Curt # C56431 tees into the existing factory wiring and will leave your factory 4 way connected, so you'll still have the ability to use that for towing as well. I've linked the installation video of this harness for you to have a look at, which shows how this all works.
    view full answer...
  • No Power On Charge Line Circuit Of Curt Vehicle Wiring Harness Installed On a 2020 Ford Ranger
    You will want to check the fuse for your trailer charge circuit. As your 2020 Ford Ranger did not include a factory 7-way the fuse may have been left out of the fuse block. You will need to locate the fuse box in your engine compartment to check for the fuses. Your owners manual will help you to identify where the box is and which fuses you will need to check if they are in place and not damaged. The fuse box you need is located directly behind the battery. You will need to check for...
    view full answer...
  • How to Install Trailer Wiring on a 2020 Ford Ranger
    To install trailer wiring on your 2020 Ford Ranger I recommend the T-Connector # C56431 which tees into your OEM wiring underneath the vehicle on the driver's side. We actually had the opportunity to install this on a 2020 Ranger and I'm linking the installation video for you to check out.
    view full answer...
  • 2021 Ford Ranger XLT Wiring Harness with or without Power Wire
    The Tekonsha wiring harness item # 22124 for your 2021 Ford Ranger XLT uses a power lead because they feel like it's needed but the Curt harness item # C56431 will work just fine and eliminates that extra step during installation. I recommend using the Curt wiring harness. I have linked video reviews for both the Curt and Tekonsha wiring harnesses.
    view full answer...
  • 7-Way and 4-Way Trailer Wiring for Rear of 2019 Ford Ranger
    It is possible to have both a 7-way and 4-way on your 2019 Ford Ranger by using the # C56431 but you will need to replace the 7-way connector with the # C55774 and you'd have one that has both. This uses the same round connector as what comes with the # C56431 so it would plug right in.
    view full answer...
  • Troubleshooting Curt C51180 Echo Wireless Brake Controller Installation on 2019 Ford Ranger
    I spoke with my contact at Curt regarding the issue you're having, and outlined all the steps you'd taken to this point, making sure the fuses for that 12-v circuit are in place, pushed the brake pedal and going through the setup process. I was told that even though you've gone through all those steps, you still WILL NOT show any power on that 12-V circuit on the 1:00 pin unless a trailer is plugged in. The so called 'smart' trailer connector won't deliver voltage on that circuit unless...
    view full answer...
  • Recommended Trailer Connector for 2019 Ford Ranger with 4 and 7-Way Plugs
    The Curt T-Connector Vehicle Wiring Harness part # C56431 is an excellent option for a 2019 Ford Ranger. It comes with a 7-way trailer connector so in order to add a 4-way as well while keeping the 7-way you'd need to replace the trailer connector that comes with using the Curt T-Connector part # C55774 and then you'd be set since it also comes with a mounting bracket.
    view full answer...
  • How To Tell If 2020 Ford Ranger Lariat Has The Factory Tow Package
    If your 2020 Ford Ranger Lariat has the factory towing package it will have a factory installed trailer hitch receiver, and a 4-way/7-way connector. If you do not have these components then your truck does not have the factory towing package. To add these components you would need the Curt Trailer Hitch Receiver # C13417, and the Curt T-Connector 7-way Connector # C56431 as both of these components are a confirmed fit for your truck. I included videos of the products mentioned for you...
    view full answer...
  • How To Tell If 2021 Ford Ranger Lariat Has The Factory Tow Package
    If your 2021 Ford Ranger has the factory towing package it will have a factory installed trailer hitch receiver, and a 4-way/7-way connector. If you do not have these components then your truck does not have the factory towing package. I suggest the Curt Trailer Hitch Receiver, # C13417, and the Curt T-Connector 7-way Connector, # C56431. Please note the linked product review and installation videos below.
    view full answer...
  • Will Curt T-Connector For 2021 Ford Ranger Work With OEM Style 7-way/4-way Connector?
    Based on the picture you provided the OEM 7-way/4-way connector for your 2021 Ford Ranger uses the standard connector as the Curt T-Connector Vehicle Wiring Harness with 7-Way Trailer Connector # C56431 you were looking at. We actually offer the same style 7-way/4-way connector as # HM40975. I included a video of the products mentioned for you to take a look at.
    view full answer...
    Image 1 for
  • Can the HM40975 Be Used on a 2021 Ford Ranger?
    From all the info I could find, the 2020 Ranger and the 2021 Ranger both use the same stock bumper. With that being said, the 7 Way plug that is included with the Curt # C56431 can definitely be replaced with the 7 Way plug from the # HM40975.
    view full answer...
    Image 1 for Image 2 for Image 3 for Image 4 for
  • Does 7-Way of 2022 Ford Ranger Fit 7-Way of Casita
    The SAE number you listed J2863 is for a standard RV 7-way blade connector like what Casita would use for their trailer wiring connectors. We've not had any issues with the Ford 7-ways and the ones that would come on a Casita. If you ever needed a replacement on your Ranger the part # HM40940 would plug right into the connector on your vehicle. Or for a new harness and 7-way you'd want the part # C56431.
    view full answer...
  • Can An Aftermarket Brake Controller Be Installed On A 2021 Ford Ranger With The Tremor Package
    You can definitely use an aftermarket brake controller on your 2021 Ford Ranger with the Tremor package. Though there is not a port to plug something like the Tekonsha Primus IQ Trailer Brake Controller # TK90160 into, there are 4 wires under your dash specifically for this kind of application. With that being said, not all trucks came with the 7 Way plug on the back, so you may need to add the Curt # C56431 to get this completed. If you truck did not come with the 7 Way, you will also...
    view full answer...
  • Recommended Trailer Harness Wiring For A 2022 Ford Ranger
    If your 2022 Ford Ranger has the factory tow package then you'll just need the T-One Vehicle Wiring Harness with 7-Way Trailer Connector # 22124. This custom-fit T-One connector plugs into your vehicle's wiring harness, which is located beneath the vehicle, on the driver's side. Once installation is complete, the 7-way connector will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket like # 18138 is recommended to keep the connector secure. If you do not have...
    view full answer...
  • Will the Curt T-Connector # C56431 Fit with My OEM 4-Way/7-Way Plug on My 2022 Ford Ranger?
    Based on the photo you included for us, it looks like a standard connector plug. With that being said, the Curt T-Connector # C56431 will fit the plug you have. We carry very similar plugs to the one you have as part # HM40975.
    view full answer...
    Image 1 for
  • Does Curt 7-Way Wiring Harness Fit 2019 Ford Ranger
    The Curt T-Connector Vehicle Wiring Harness with 7-Way Trailer Connector # C56431 will absolutely fit the connector you have on your 2019 Ford Ranger. If you take a look at your photo as well as the accompanying photo I added from the install video of this harness on a Ford Ranger, you can see the connectors are exactly the same. I do recommend checking out the linked video install of the Wiring Harness # C56431 so you can see how easy it is. I also strongly recommend using Dielectric...
    view full answer...
    Image 1 for Image 2 for
  • Does a Hitch From a 1990 F-150 Fit On a 2019 Ford Ranger?
    We do have a hitch that fits your 2019 Ford Ranger # C13417 but a hitch for a 1990 Ford F-150 does not fit a 2019 Ford Ranger because hitches are model year specific to every vehicle and need to have certain mounting points on a vehicle's frame to ensure a proper and safe fit. In addition to the trailer hitch, you will also need trailer wiring. The Curt T connector # C56431 is a great option for your vehicle. This unit is easy to install and it easy to conceal under the vehicle. We also...
    view full answer...
  • Does The Color Of The Vehicle Impact The Fit & Compatibility Of Trailer Hitches?
    Yes! Even though the Curt Trailer Hitch Receiver # C13417 which is confirmed to fit your 2021 Ford Ranger was installed on a blue truck, it will still work on your white truck. The color of your vehicle does not impact the fit & compatibility of this hitch! Additionally, this hitch has a maximum towing capacity of 6,000lbs, with a maximum tongue weight capacity of 900lbs, however you're going to want to verify with your owner's manual for your vehicle's maximum towing capacity and make...
    view full answer...
    Image 1 for
  • Parts Needed for Installation of Redarc Tow-Pro Elite Trailer Brake Controller on a 2022 Ford Ranger
    For installation of the Redarc Tow-Pro Elite Trailer Brake Controller # RED44FR for your 2022 Ford Ranger you will also need the Curt T-Connector Vehicle Wiring Harness with 7-Way # C56431. This custom-fit T-connector plugs into your vehicle's wiring harness, which is located behind the driver 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.
    view full answer...
  • Parts Needed To Install An Electric Trailer Brake Controller In A 2022 Ford Ranger
    To install a trailer brake controller in your 2022 Ford Ranger you'll first need a trailer wiring harness. For this I recommend the Curt T-Connector Vehicle Wiring Harness with 7-Way Trailer Connector # C56431. This custom-fit T-connector plugs into your vehicle's wiring harness, which is located behind the driver 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...
    view full answer...
  • Trouble Installing Curt T-Connector Vehicle Wiring Harness on a 2019 Ford Ranger
    In order to install the Curt T-Connector Vehicle Wiring Harness part # C56431 on a 2019 Ford Ranger you must first unplug the tow package harness pigtails from one another which are located behind the rear driver-side axle along the frame rail. Once these are found, you must first make sure the locking tab on the pigtail is fully disengaged and then press firmly on the center tab while pulling out as that should then release the two and then you can install the new harness inline. I have...
    view full answer...
  • What 7-Way Harness do You Recommend for My 2017 Ford Ranger?
    I did some research on the 2017 Ford Ranger. It looks like the United States did not start producing the Ranger here until 2019. Although, it looks like Australia did come out with a 2017 version. I just wanted to confirm that you are looking for a 2017 model. Thanks!
    view full answer...


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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee John H
Expert Research:
John H
Employee Lindsey S
Edited by:
Lindsey S
Employee Joshua S
Video by:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Dustin K
Video Edited:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee Kathleen M
Installed by:
Kathleen M
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Written by:
Kristina F
Employee Ryan G
Test Fit:
Ryan G

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