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Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In

Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In

Item # C51432
Our Price: $20.17
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Install your Curt electric trailer brake controller quickly and easily with this custom wiring adapter. Simply plug one end of the adapter into your brake controller and then plug the other end into the built-in port behind your vehicle's dash. 1-833-496-1390 to order CURT accessories and parts part number C51432 or order online at Free expert support on all CURT products. Great prices and Fastest Shipping for Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In. Accessories and Parts reviews from real customers.
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  • Reviews (24)
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CURT Accessories and Parts - C51432

  • Trailer Brake Controller
  • Wiring Adapter
  • Plugs into Brake Controller
  • CURT
  • Vehicle Specific

Install your Curt electric trailer brake controller quickly and easily with this custom wiring adapter. Simply plug one end of the adapter into your brake controller and then plug the other end into the built-in port behind your vehicle's dash.


  • Plug-in wiring adapter allows for quick, simple installation of your electric trailer brake controller
  • No cutting or splicing required
    • Custom connector end plugs into the built-in port behind the dash of your vehicle
    • Other end plugs into the back of your electric brake controller
  • Compatible with time-delayed and proportional brake controllers from Curt
    • Brake controller must have built-in plug for adapter to connect - will not work on controllers with pigtail wiring harnesses
  • 2' Long, 12-gauge wires have protective covering to deter damage
  • Limited 1-year warranty

Installation of Curt Brake Controller Adapter

To install your Curt electric brake controller, you need to connect the wiring of the controller to your vehicle. Certain auto manufacturers offer pre-wired options, typically known as tow packages, wherein wiring is run for you from the dash to the trailer connector on the back of your vehicle. When this is done, a port is installed at your dash so that you can easily plug in a brake controller.

This adapter plugs into the port on your vehicle's built-in brake control wiring harness, which is located behind the dashboard. To access this connector, you will need to remove the finish panel in your dash. Plug the adapter into the connector in the large gray housing behind the panel.

No hardwiring is required to install this adapter. After you plug it into the factory port, you simply plug the other end of the adapter directly into your electric trailer brake controller. Because there are no wires to connect, installation is not permanent. You can unplug and remove your brake controller at any time to transfer it to another vehicle or securely stow it away.

51432 Curt Quick Plug Brake Control Adaptor Harness

Installation Details C51432 Installation instructions

This Product Fits The Following Vehicles

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In - C51432

Average Customer Rating:  4.8 out of 5 stars   (24 Customer Reviews)

Install your Curt electric trailer brake controller quickly and easily with this custom wiring adapter. Simply plug one end of the adapter into your brake controller and then plug the other end into the built-in port behind your vehicle's dash.


Perfect, plug and play


I bought a weight distribution hitch w|sway control, and a trailer brake controller for my Four Winds RV. I received my order today, within a few days of placing the order. I have not installed it yet but it appears to be user friendly. Both pieces are made by Curt so the quality & performance should be good.
My thanks to etrailer & Stacy??

2015 Ford F-250 Super Duty

Ford 2013 F250.. This brake controller fit like a glove. I have a 2013 F250 and I finally found the plug behind the coin box on the dash. It fit just right and after I finally found where the factory plug was and routed all the wiring behind the dash it took about about 15 minutes to get everything working. I have use e-trailer for several projects and the shipping is amazing and they totally understand what they are doing. Thanks to all at e-trailer.

works like is it suppose too, not any problems
Jim S - 04/01/2015
hooked right up and not any problems. 2013 F250 connectors were behind the coin
Jim S - 04/01/2015


I recently bought a Kurt trailer brake controller with adaptor. I have to say, that it was the easiest thing to hook up. The product was also shipped to my home very fast. I did not think I was going to receive the package until the next week, but it came just in time to use it the following day for my work. i Love ordering products from etrailer, I have only had really great service and good products from them. I will for sure, order from them again.


This product was perfect for my use. The wiring harness worked just as I was told and very easy to install. I have bought several items from etrailer and everything has been good quality. The items arrive in good working working condition and in a timely manner.
Etrailer employees are very helpful and professional.

2016 Ford E-Series Cutaway

Brake controller and adaptor installed and connected in less than 10 minutes, I am very happy with the purchase and the included instructions and information.


This is the second of these units I have purchased and installed. The quick connect ends make it soooo easy, just plug the matching ends together (NO splicing wires). I highly recommended this unit with the pigtail extender


Didn't work poor info from customer ser vice

I see that you ordered the C51140 brake controller with the C51432 adapter. Since you said you have a factory 7 way, the adapter will plug into the built-in port behind your vehicles dash. If you cannot find the built-in port and are not sure if you have a factory 7 way, you can call a local dealer with your vin number and they will tell you. Please note, if your vehicles 7-Way trailer connector has LED test lights built into it, the TriFlex brake controller will not be compatible.
-- Etrailer Expert Sierra K - 09/01/2021


Product fit just like it should and as you said and your video or picture was very helpful in finding the plugin at such a weird location that ford put it.


brake controller.


Cable worked great,watched video couldn't find factory plug.It was behind coin holder below radio.You guys are the best THANKS


Product installed in 5 minutes, tested and setup in 10 minutes. Shipping was fast. Superb value

Works great
Kenneth T - 09/16/2017


First of all I received the product much faster than expected. The gal on the phone told me a week to 10 days, I received it in about four days. It took me about 10 minutes to install it and it works perfect so far. I have no complaints about this product.




I haven't installed it yet but it looks fine to me


Very nice. Everything fit perfect


Couldn't have been easier to install.



2016 Ford F-250 Super Duty



2011 Ford F-250 and F-350 Super Duty


See what our Experts say about this CURT Accessories and Parts

  • Installation Location Of The Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers # 22292
    When installing your Teknosha controller with The Tekonsha Plug-In Wiring Adapter # 22292, the adapter will plug into the built-in connector beneath your vehicle's dashboard. To access the connector you will first need to locate the instrument cluster finish panel in the center of your dash, near the driver's side. Carefully pry the panel out and undo the locking tabs to remove the panel. Plug the adapter into the mating connector in the large gray housing behind the panel. I attached...
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  • Location of Brake Controller Connector in 2014 Ford Expedition
    The connector for the brake controller is located behind the dash just to the left of the glove box. The easiest way to access the plug is to 'drop' the glove box. You'll need to either remove a few screws on the interior of the glove box, or push in on the sides to release it so it'll swing down. Once the glove box is dropped, you'll see the plug next to the glove box on the left.
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  • Correct Wiring Harness for Curt C51170 Spectrum Brake Controller on Ford Cutaway Van Chassis
    If your E450 Van Cutaway Chassis is a 2009 to 2020 model year, you'll need the Curt # C51432 harness to connect the # C51170 Curt Spectrum Brake Controller to the factory plug located behind the cubbyhole in the dash. If your van chassis is a different model year, please let me know and I'd be happy to make a recommendation. I've linked to a product description video that explains the features of the Curt Spectrum Brake Controller.
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  • Parts Needed to Install Brake Controller in 2015 Ford Flex with Tow Package
    To install the Curt Triflex part # C51140 in your 2015 Ford Flex that you completed the tow package for the only harness you need is the part # C51432 which will plug into the connector under the dash of your Flex that you mentioned.
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  • Can Curt Spectrum Brake Controller Install in 2011 Ford F-350 with Integrated Brake Controller
    The Ford factory brake controller that is in the dash does not have to be removed. You will need to unplug the connector under the dash and plug in the # C51432 adapter for the Curt Spectrum brake controller # C51170 to the factory brake controller plug behind the dash. The vehicle will need the computer flashed so it will keep from searching for the connection to the OEM brake controller in the future, eliminating any fault codes. This will usually have to be done at the Ford Dealer.
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  • Brake Controller Recommendation for a 2002 GMC Envoy
    To install a brake controller in a 2002 GMC Envoy there isn't a quick plug-in harness confirmed to fit the vehicle like the # C51432 that you referenced. There are 4 blunt cut wires under the dash that you will need to wire the brake controller to. To install the Curt Venturer part # C51110 you will also need the # C51515. Check out the video I attached that shows a similar brake controller being installed in a GMC Envoy of the same generation as yours to see how it installs.
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  • Curt Brake Controller Pigtail for a 2003 Dodge Ram and Curt Discovery Brake Controller
    The Curt brake controller wiring harness for the 2003 Dodge Ram is # C51332. If you will be moving the controller back and forth from one truck to the other I also recommend a second mounting bracket, # C51124.
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  • Curt Brake Controller Wiring Harness for 2007 Ford F-350
    The correct Curt brake controller vehicle specific wiring harness for a 2007 Ford F-350 would be part # C51372. This harness is only compatible with Curt brake controllers such as the # C51140 Curt TriFlex. The # C51432 you referred to is a fit for later model Ford Super Duty trucks, and wouldn't work for your 2007. The harness would plug into the connector clipped to the rear of the storage pocket located above the ashtray, as shown in the provided photo.
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  • Troubleshooting Curt TriFlex Brake Controller Keeping Motorhome from Turning On
    If your motorhome has the 2015 Ford F-450 cab and chassis that you input for your vehicle info then the Wiring Adapter # C51436 is the problem. You should actually be using the Wiring Adapter # C51432 for your TriFlex # C51140 instead. When I spoke with my contact at Curt he said that for the Ford pickups if the wrong adapter is used then it does something to the anti-theft and keeps the vehicle from starting.
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  • Parts Needed To Install Curt Brake Controller On a 2018 Ford E-Series Cutaway
    In order to install the Curt Discovery Trailer Brake Controller part # C51120 on a 2018 Ford E-Series Cutaway you should be using the Curt Custom Wiring Adapter for Trailer Brake Controllers part # C51432. The Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers part # 3034-P would work but you'd have to cut the brake controller side plug off as well as the plug on the end of the brake controller and hardwire the two together.
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  • Is There a Brake Controller and Wiring Adapter Harness for a 2021 Jayco Redhawk Motorhome 22j
    For your 2021 Jayco Redhawk 22j which is on the 2021 Ford E-Series cutaway chassis there is only one adapter available. That is the Curt Custom Wiring Adapter for Trailer Brake Controllers # C51432 which will work with a Curt brake controller like the Curt Echo Under-Dash Trailer Brake Controller # C27JR. The Curt Echo Under-Dash Trailer Brake Controller # C27JR is a bluetooth-enabled brake controller that wirelessly connects to your smartphone, turning your phone into a brake controller...
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  • 2018 E-Series Cutaway Brake Controller Adapter/Wiring Harness
    The plug you are looking for will be located over on the driver's side kick panel to the left of your left foot when driving. This is typically taped to the main harness and can be tough to find. Generally it looks like a plug wrapped in electrical tape. The port in the picture is the OBD2 port for vehicle diagnostics. The Redarc Tow-Pro Wiring Adapter for Curt Brake Controller Harness part # 331-TPH-019 is specific to the red arc controllers. For a Tekonsha conroller part # 3034-P is...
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  • How to Use Older HydraStar Electric Over Hydraulic Actuator on 2008 Ford F-450
    The HydraStar Electric Over Hydraulic Actuator Adapter Module # HBA-CAM will only work if your HydraStar Electric Over Hydraulic Actuator for Drum Brakes # HBA-10 has a serial number above 313800 so it won't work for you. So you have a couple options, the first of which is that adapter along with a new HydraStar Electric Over Hydraulic Actuator for Drum Brakes # HBA-10. The other is to replace the factory brake controller in your 2008 Ford F-450 with one that is compatible with electric...
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  • Which Brake Controller Wiring Adapter Harness for 2011 Lexigton RV on Ford E-450 Chassis
    The brake controller connector is located behind a panel just to the left of the glove compartment, as shown in the provided photo. The wiring harness adapter used will depend on the brake controller you end up using. I see that you've looked at a Hayes Syncronizer # HA81725 brake controller. If you use a Hayes controller, you'd need the # HA81788-HBC adapter. For a Tekonsha or Draw-Tite, use # 3034-P or for a Curt controller, use # C51432. Rather than a time delayed controller like the...
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Info for this part was:

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Expert Research:
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Employee Lindsey S
Written by:
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Updated by:
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