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Curt Discovery NEXT Trailer Brake Controller - 1 to 4 Axles - Time Delayed
Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In

Part Numbers: C84VV,C51432

Retail:$158.99
Our Price: $113.20
You Save: $45.79
Trailer Brake Controller

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Curt Discovery NEXT Trailer Brake Controller - 1 to 4 Axles - Time Delayed
part number: C84VV

An easy-to-read digital number display, 10 power levels, and a pinch-trigger manual override make this time-delayed brake controller easy to use. Installation is simple with no mounting restrictions. Activates brakes with a preset intensity.

Features:

  • Brake controller activates trailer brakes with preset intensity
  • Adjustable power output control lets you select the amount of braking force
    • Rocker switches located on left front of module for easy access
  • 10 Gain settings and 9 load settings allow you to adapt to various driving conditions
    • Select a higher setting for harder braking and lower for more gradual braking
  • Pinch-trigger manual override is within easy reach for controlling trailer sway or stopping in emergencies
  • Simple LED display shows the amount of power output
    • Self-diagnostics monitor trailer connection and check for shorts
  • LCD display shows power adjustments in 0.5 increments
    • Brightness is adjustable for optimal visibility
  • Auto-sleep mode prevents battery drain after 5 minutes of idle time
  • Quick and easy installation with no mounting restrictions
    • No need to mount level - install anywhere at any angle
    • Included mounting bracket and hardware designed to hold the brake controller flush against the dash
    • Plug-in, vehicle-specific brake control adapter (sold separately) available for select vehicles to reduce installation time


Specs:

  • Application: trailers with up to 4 axles (8 brake assemblies)
    • Compatible with low-volt, PWM, ABS, cruise control, and electric-over-hydraulic trailer brakes
  • Dimensions: 4" long x 3-1/8" wide x 1" tall
  • Limited lifetime warranty


Gain Adjustment

Gain control lets you set the maximum amount of power that will be applied to your trailer's brakes, adjusting in increments of 0.5. How much braking output you need is determined by the weight of your trailer; a heavier trailer will need more power to bring it to a stop. You want to go as high as you can without the trailer brakes locking up. Typically, the gain is only readjusted when you experience changing road conditions or if the weight of your trailer changes. To get more power to your brakes, press the upper orange rocker switch. To decrease the gain, press the lower switch. When you make your adjustment, the gain setting will show on the LED screen for 10 seconds as a series of bars and then go into sleep mode.


Load Control

Once you have the gain set, you can fine-tune your braking by adjusting the load control on a scale of 1 to 9. This controls the aggressiveness of your trailer's braking, meaning how quickly the brakes reach the maximum braking level. Load control can get the braking power to your trailer faster and with more intensity so that it doesn't push your tow vehicle forward. If your vehicle takes too long to come to a stop, increase the setting by pressing the upper black rocker switch. If it stops too abruptly, decrease the setting by pressing the lower switch. You can alter the setting to suit your driving preferences or to improve handling based on changing road conditions or varied trailer loads.


Pinch-Trigger Manual Override

The Discovery comes with a easy-to-reach, pinch-trigger manual override, great for stopping sway or controlling your trailer's momentum in emergencies. To engage the manual override, just push in the trigger. This will activate the trailer's brakes and brake lights without you having to apply the brakes on your tow vehicle, perfect for limiting trailer movement while you're cruising.


LED Display

The LED display on the Discovery is large and easy to read at a glance. It will show you what setting the brake controller is on as well as give you information for troubleshooting. You can adjust the screen brightness or trigger night mode so it won't glare obnoxiously on your dash. Press the control button to cycle through the different modes.


Curt Discovery NEXT

Quick Installation

Because inertia plays no role in the functioning of this controller, you do not have to mount the unit at any particular angle. Your mounting options are limitless, so long as you can still easily access the controller and the manual override. The included bracket is designed to mount the brake controller flush to the dash so it takes up almost no space at all.


If your vehicle already has a plug-in brake controller wiring harness, just connect the unit to it. Otherwise, you will need to purchase a vehicle-specific wiring harness (sold separately) to plug into. If a harness is unavailable for your vehicle, hardwiring will be necessary.


Note: If a custom brake control wiring adapter is not available for your vehicle, one of the following will be required:

20-Amp circuit breaker (9506P - sold separately) for 2- to 4-brake applications

30-Amp circuit breaker (38630 - sold separately) for 6- to 8-brake applications


See also etrailer.com's exclusive 7- and 4-way brake control installation kit (ETBC7 - sold separately) if you don't already have a 7-way plug at the back of your vehicle.


Time-Delayed Braking

what is time-delayed braking

The Curt Discovery comes equipped with time-delayed braking. Every time you apply the brakes in your vehicle, a signal is sent - via the brake switch - to the Discovery. The controller then sends power out to your trailer brakes to activate them with an intensity set by you, at a rate determined by you. Both the amount of braking power (gain) and rate of application (load) can be adjusted to suit your preference, the road conditions, the type of trailer, and the weight of your load. To determine which levels are best for your application, test your towing setup and choose what feels right.



51126 Curt Discovery NEXT Time Delay Trailer Brake Control - 1 to 4 Axles

Replaces Curt 51120



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

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.

Features:

  • 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

California residents: click here




Customer Satisfaction Score:


Customer Reviews

Curt Discovery NEXT Trailer Brake Controller - 1 to 4 Axles - Time Delayed - C84VV

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

Average Customer Rating:  4.7 out of 5 stars   (47 Customer Reviews)

An easy-to-read digital number display, 10 power levels, and a pinch-trigger manual override make this time-delayed brake controller easy to use. Installation is simple with no mounting restrictions. Activates brakes with a preset intensity. 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.

by: Dennis02/11/2024

I believe I entered the correct vehicle type and the cord did not match my 2024 e350 super duty. Luckily there were extra wiring harnesses with the new van. I spliced the correct end that matched my brake controller left behind my coin tray by the manufacturer. I was able to use the rest of the harness to the brake controller so it still was useful. Who knows. My manufacturer could have wired it incorrectly.

Etrailer Expert

Katrina D.

2/21/2024

I have gotten in contact with the manufacturer and I see that part # C51432 (Curt Custom Wiring Adapter for Trailer Brake Controllers) is only a confirmed fit for the 2014 e350 Super Duty, not the 2024. So, it does not seem like it was your installer wiring it incorrectly. I am sending in this information to our fit guide team for them to get this corrected on our site. I am sorry for the inconvenience, let me know if there is anything I can do for you.



by: John R05/24/2024

Took about 10 minutes to install. Have not made all the adjustments yet, but is easy to understand.



by: Jerry 04/25/2024

Tested . Work fine and advertised



by: Ethan 03/15/2024

excellent service and delivery.



by: Lewis02/17/2022

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??



by: Jim S.04/01/2014
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.

Jim S.

4/1/2015

works like is it suppose too, not any problems

Jim S.

4/1/2015

hooked right up and not any problems. 2013 F250 connectors were behind the coin



by: Donny 10/17/2023

Works as expected.



by: Sidney 09/21/2023

Like its compact size and simple operat ion.



by: Dusten09/21/2023

Very helpful, knowledgeable and friendl y!



by: Jason S07/30/2017

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.



by: Tim T.07/27/2017
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.



by: Larry W01/22/2016

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.



by: Ken T09/16/2016

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

Kenneth T.

9/16/2017

Works great



by: Raymond 10/28/2022

Perfect, plug and play



by: Thad N.05/19/2018

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



by: John02/20/2018

brake controller.



by: Rod O05/08/2017
Ford

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.



by: Dana A.03/10/2016

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



by: Brian08/26/2021

Didn't work poor info from customer ser vice

Etrailer Expert

Sierra K.

9/1/2021

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.



by: Ken C.01/21/2014

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.



by: Mark 08/13/2018

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



by: Jk01/25/2017

Very nice. Everything fit perfect



by: Gary 02/10/2024



by: Christopher 03/22/2024



by: Matthew03/14/2018

Couldn't have been easier to install.


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Ask the Experts about this Trailer Brake Controller
Do you have a question about this Trailer Brake Controller?


  • How Would Curt Brake Controller Install Harness Wire to Tekonsha Controller in 2017 Chevy Tahoe
  • So the Curt trailer wiring harness # C51451 that you referenced for your 2017 Chevy Tahoe can very easily be wired to your Tekonsha Voyager # 39510 by just matching the colors between the two harnesses. All of the color/functions are same so it's a really easy swap. Or you could use the install harness # 3016 which would plug straight into the Voyager and to the install port of your 2017 Chevy Tahoe for the brake controller.
    view full answer...

  • How to Properly Set Up Curt Discovery Time Delayed Brake Controller
  • To properly set up the Curt Discovery brake controller part # C84VV you first need to set the max output setting with the thumbwheel (number 2 in picture) on top of the controller. You want to adjust this to a setting that when you slide the manual override lever (number 4) all the way grabs the brakes as hard as possible right before locking up. Once that's set the next setting is the sync setting (lever on side number 3) which controls how fast the brake pressure ramps up to full
    view full answer...

  • Troubleshooting Flashing Display of the Curt Discovery Brake Controller part # C84VV
  • The flashing O.L. message with the Curt Discovery Brake Controller part # C84VV when there is no trailer connected indicates that there is a short somewhere on the brake output circuit. I would check all the connections you made on the blue wire from the controller and then also check the trailer connector at the rear of the vehicle looking for any exposed wire or corrosion and fix as necessary. If it only flashes O.L. when the trailer is connected the problem is the same as above but
    view full answer...

  • Curt Brake Controller Adapter Harness for a 2020 Jeep Grand Cherokee
  • In order to install the Curt Discovery Trailer Brake Controller part # C84VV on a 2020 Jeep Grand Cherokee you will need the Curt Custom Wiring Adapter for Trailer Brake Controllers part # C51446 which makes for a plug and play installation.
    view full answer...

  • Adapter Needed to Install Curt Discovery Electric Brake Controller in 1999 Ford F-350
  • To connect the Curt Discovery Electric Brake Controller # C84VV directly to the factory plug under the dash of your 1999 Ford F-350 you need # C51322. Without the harness the controller can be installed but it would need to be hardwired into the truck.
    view full answer...

  • Trailer Hitch Recommendation for 1996 Cadillac Fleetwood Hearse with 38 Inch Frame
  • While a custom fit hitch for your 1996 Cadillac Fleetwood Hearse is not an option, the Multi-Fit Trailer Hitch # 5350 may work for you. The hitch is adjustable to fit vehicle frames from 24 to 46 inches wide, has a capacity of 5,000 lbs and features the 2 inch receiver you wanted. It requires no welding and all hardware to install it is included. Since your frame is recessed a good 16 inches behind the vehicle's fascia, your best option is to go with an extra long ball mount like
    view full answer...

  • Will the Curt Custom Brake Controller Adapter # C51322 Work with a 1998 Lincoln Navigator
  • The Curt Custom Wiring Adapter, # C51322, was designed to work with the factory brake controller plug on your 1998 Lincoln Navigator. The pin for the red wire coming from the brake controller should mate with the pin for the light green wire on your factory plug. It will be the middle pin and on one side you should have a pin with constant 12 volt power and the pin on the other side should have no power. I have attached a photo that shows the functions of each pin on the custom wiring adapter
    view full answer...

  • Parts Needed to Install the Curt Discovery Brake Controller # C51120 on a 2013 Dodge Durango
  • The Curt Discovery Trailer Brake Controller, # C84VV, and the Custom Wiring Adapter, # C51446, will work on your 2013 Dodge Durango without splicing as long as your Durango came with a factory 7-way trailer connector at the trailer hitch. The 7-way trailer connector would indicate that your truck has the factory tow package, which would include a brake controller plug under the drivers side dash. You should see a gray connector just to the left of the steering column. If your Durango
    view full answer...

  • Curt Brake Controller and Wiring Harness for a 2015 Ford F-150
  • For a Curt Discovery brake controller # C84VV you will need wiring harness # C51436 for your 2015 Ford F-150.
    view full answer...

  • Parts Needed to Install an Electric Trailer Brake Controller on a 2012 Nissan Frontier
  • The Curt brake controller # C84VV by itself does not plug directly into the factory location on the 2012 Nissan Frontier. You require another harness, # C51382. Once end plugs into the brake controller the other to the factory harness on the vehicle. The factory harness will be located underneath and left of the steering column, taped to another harness near the emergency brake pedal. If your 2012 Nissan Frontier did not come with a factory installed 7-Way trailer connector you will
    view full answer...

  • Curt Discovery Brake Controller Is Only Showing A Dot When Engaging Manual Override
  • The Curt Discovery Trailer Brake Controller, # C84VV, should show only the decimal point dot when the controller is activated and a trailer is not connected. If it shows the dot all the time, the red wire is connected to the wrong side of the stop light switch or the wrong switch completely like the cruise control. If you have only the decimal point when the trailer is connected, the usual cause is that the brake controller does not sense the trailer brakes. This could be due to corrosion
    view full answer...

  • Can I Use the Curt Discovery Brake Controller in a 2021 Honda Pilot
  • Yes. You could use the Curt Discovery # C84VV on your 2021 Honda Pilot with the plug and play adapter # C51392 to allow for an easier installation that won't require cutting into any wiring. However, the Discovery is a time delayed brake controller, which means that it applied the brakes with the same intensity and with a slight delay in response to the tow vehicle's brakes being pressed. I do typically recommend going with a proportional brake controller, which uses gyroscopes and sensors
    view full answer...

  • Will Curt Discovery Brake Controller Work With a 2003 Cadillac Escalade?
  • The Curt Discovery Trailer Brake Controller, # C84VV, is a fit on your 2003 Cadillac Escalade, though it will require the use of the Curt Custom Wiring Adapter, # C51352. This product simply plugs into the port that is located in the junction box that is under your dash to the left of your steering column. The exact spot it plugs in will be on the top row, second slot from the left.
    view full answer...

  • Compatibility of Curt Discovery Brake Controller With 2010 Chevy Silverado
  • Brake controllers are not vehicle specific. The # C84VV Curt Discovery brake controller is compatible with your 2010 Silverado. You'll also need the Universal Curt Brake Controller Pigtail, part # C51515. The pigtail wire will connect directly to the tow package wiring located under the dash between the steering column and the emergency brake pedal. Look for a bundle of wires with a white tag hanging from it. The wires of the pigtail will connect to the tow package wiring as follows: Red
    view full answer...

  • Where to Connect Brake Controller Red Wire on a 2009 Volkswagen Tiguan
  • It is possible that on your 2009 Volkswagen Tiguan you will need to follow the alternate installation instructions for the Touareg. I have included a link to an article that explains this. That would be if you are unable to locate a proper dedicated brake light only circuit. The first place to check is above the brake pedal. Look for a brake switch with wires going in and out of it. Use a circuit tester such as # PTW2993 to probe the wires (the key may have to be in the on position).
    view full answer...

  • Curt Brake Controller, Wiring Harness 1999 F-350 Super Crew
  • The Curt brake controller # C84VV can plug directly into your 1999 F-350 Super Crew using the proper wiring harness, # C51322. This harness is sold separately. I have included a link to a video to the right that shows where the connection point on a similar truck. The brake controller and harness are different in the video but they plug into the same place on the truck.
    view full answer...

  • Troubleshooting Brake Controller that Flashes When Connected to Trailer
  • It sounds like the problem is corrosion on the trailer 7-way brake output circuit which is causing the controller to only show an intermittent connection. Try cleaning off this pin on the 7-way with some fine grit sandpaper. Testing the brake controller is fairly easy. Sever the blue brake output wire near the brake controller leaving enough room to reconnect it and then apply the manual slide. Using a circuit tester like part # PTW2993, you should get output to the controller side of
    view full answer...

  • OL Message on Curt Discovery Trailer Brake Controller
  • There could be a few different things happening with your Curt Discovery Trailer Brake Controller part # C84VV. The first thing that could be happening is that you have a short on the red stop light switch wire. In order to rule this out you will need to probe the red wire going into the back of the brake controller. There should only be power on this wire with the brake pedal depressed. If there is when it is not then you know there is either a short in this wire or the stop light switch
    view full answer...

  • Troubleshooting Trailer Brakes that Lock Up When Trailer Is Connected
  • There is a short or a mis-wire on the 7-way you installed. It sounds like the 12 volt accessory circuit is shorting out to the brake output circuit which is causing the brakes of the trailer to lock up anytime the 7-way is connected. This is a fairly common issue as wiring up connectors is a bit confusing. Since the controller never senses a connection it sounds like the problem is the circuits just being wired backwards. I attached a chart that has what the 7-way pin out should look like.
    view full answer...

  • 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.
    view full answer...

  • Troubleshooting Curt Discovery Brake Controller Causing Anti Theft Light to Come on with Motorhome
  • Your Curt Discovery Trailer Brake Controller C51120 should have installed on your Ford Forest River 3050S with the Wiring Adapter # C51432 so the wiring shouldn't be incorrect, and the Anti Theft system shouldn't be connected to a brake controller circuit at all. The only things I can think of is if your controller was hardwired in and that was done incorrectly, or if there was other wiring that was damaged and it ended up blowing a couple of fuses. I don't have a wiring diagram for
    view full answer...

  • 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
    view full answer...

  • 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 # C24VV 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.
    view full answer...

  • 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
    view full answer...

  • 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.
    view full answer...

Info for these parts were:

Employee Leah B
Edited by:
Leah B
Employee Mike L
Expert Research:
Mike L
Employee Michael H
Expert Research:
Michael H
Employee Lindsey S
Written by:
Lindsey S
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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