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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,C51436

Retail:$161.16
Our Price: $116.58
You Save: $44.58
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: C51436

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. For most applications, this harness is located behind the dash.


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.



51436 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 - C51436

Average Customer Rating:  4.7 out of 5 stars   (100 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: John J.06/12/2023

Kate M. my salesperson, had a most professional interaction with me being certain of my and my vehicle's needs. In addition, she walked me through the complete installation process. This I completed, wiring the 7-way and the Curt Discovery Controller making no errors along the way. On the first test, every terminal on the 7-way tested as it should. When we came home with the RV from the dealer, all the lights and the brakes worked flawlessly. Many thanks!!



by: Tommy J.01/31/2014
2014 Ford F-150

Adapted Curt brake controller for my 2014 Ford F150 STX without any problems. Just find your Ford brake control connector behind the coin slot on the left side of the dash and plug it in.

Tommy J.

1/31/2015

After a year of using the Curt brake controller it has been by far the best one of several I have used and installed. i highly recommend the controller.



by: Robert06/01/2024

Simple design eight minutes to install 10 minutes to program



by: John R05/24/2024

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



by: James 02/09/2023
2012 Ford F-150

fits perfectly...

James

2/10/2024

easy install and working perfect!!



by: Jerry 04/25/2024

Tested . Work fine and advertised



by: Ethan 03/15/2024

excellent service and delivery.



by: Kenneth 02/03/2024

Exactly what I paid for with fast shipping at a good price. Everything looks great and works perfectly.



by: Robert 03/17/2021
2009 Ford F-150

The Curt wiring adapter for my 2009 Ford F-150 plugged into the controller and the truck connector under the dashboard exactly as it should have. It works great.



by: Don D.04/26/2015

Installing and using the Curt trailer brake controller was simple and worked perfectly. I Can say the same about the customer service at etrailer. And will certainly be using them both



by: George 09/12/2021
2010 Ford F-150

The cable assembly made installation quick and easy, all I had to do was locate the Ford supplied connector in my F150. The cable assembly supplied by Curt plugs into the Ford provided connector. Plug the opposite end of the Curt supplied cable into the controller and the electrical installation is complete. Note: the Ford supplied connector has a protective cover on it, you have to remove this cover before this Curt connector will plug in.



by: Brian03/23/2023
2018 Ford Expedition

This has worked well on my 2018 Ford Ex pedition.



by: Larry M.02/08/2017
Ford

I purchased the C51436 adapter to install the C51130 trailer brake controller in my 2010 Ford pickup. Everything worked as stated. Good products from a good company with quick service.

Larry M.

2/8/2018

I am very happy with all of my purchases from etrailer. The products are still working fine after a year and your company is very good to work with. Any future needs I have will be purchased at etrailer.



by: Sidney 09/21/2023

Like its compact size and simple operat ion.



by: Dusten09/21/2023

Very helpful, knowledgeable and friendl y!



by: Cleveland R03/24/2023

the 22292 would have been a better but were not in stock.the c 51436 fit my f-
150 very good . on the other end i spliced the 4 wires,same color code ,prodgy 3 hooked up easily . worked great thanks to you



by: John A02/19/2017

Just as described. With truck specific wiring harness, installation was simple. Highly recommend!

John Y.

2/19/2018

perfectly satisfied



by: Mark A. 11/18/2013
2013 Ford F-150

Etrailer provided outstanding information regarding the technical details of the product along with easy to understand installation instructions. The brake controller provided a cost effective solution for my basic requirements. The installation was a "snap", the only time consuming task was determining the optimal location/position install the brake controller. Item was installed in a 2013 Ford F150 and I use it on a dual axle trailer for hauling a compact Kubota tractor.



by: 2012 ford F15- trailer brake 06/08/2016
2012 Ford F-150

Excellent - no hesitation in making that evaluation

I bought a brake controller, interface cable for the F150, and the 7 pin plug that goes on the back bumper. All items are great quality. Parts arrived as expected with shipping as paid for. I am installing the equipment, but don't have any issues. There were no installation instructions, however these are available on line line detail. I do not expect any operational probems but am a few days from making that test.



by: Mark D.04/13/2017
2009 Ford F-150

Researched, purchased and installed a hitch and brake controller for my 2009 F-150. It was so much easier using etrailer. I have recommended them to several friends for their towing needs.



by: Jim S.01/15/2018
2016 Ford F-150

This pigtail that Dan T. with e-trailer help me get order an shipped worked perfectly. It was a custom fit for 2016 F-150 w/ no tow pkg and a Curt 51120 brake controller. This will almost complete my conversion of my truck that had no tow pkg. In the end it will help my daughter tow her Shooting S barrel horse safely to the shows. Thank you Dan T.



by: Max04/11/2015
2012 Saturn Relay

Made install easy. I ran my own 12 ga wire to 7 pin connector for trailer brakes. I couldnt find the fuse and or relay needed for my 2011 F150 to complete factory circuit. I NEEDED the trailer the next day with a 3,000 lb tractor on it. Worked well.



by: Tom 02/27/2023
Ford F-150

Simple plug and play, installed in less than 30 minutes in my f150. A++++



by: Keith01/05/2021

Plugged right in and working perfectly

Keith M.

1/6/2022

Working perfectly



by: Ron J10/15/2016
2015 Ford Flex

This adapter from my Curt brake controller to my 2015 Ford Flex was a perfect match. Thank you very much!


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


  • 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...

  • How to Access Vehicle Brake Light Signal for Trailer Brake Controller Installation
  • If your 2005 Toyota Sequoia has a factory-installed 7-way trailer connector you can install the Curt Discovery trailer brake controller # C84VV using only the mating wiring adapter part # C51362. If it does not then the installation will be hardwired. You can gain access to the vehicle brake light signal, which is what triggers the Discovery controller to generate output voltage for the trailer brakes, either by tapping into brake light wiring or by installing a fuse tap in the brake
    view full answer...

  • Replacement Brake Controller that is More Reliable Than Curt Discovery
  • You have successfully diagnosed your Curt Discover brake controller part # C84VV as having an internal issue. It really is a bummer if this is the second one you recieved with an internal issue but I can't say I am too shocked since we've seen the Curt brake controllers be pretty problematic. The Draw Tite Activator part # TK90160 is a similar controller that is MUCH more reliable.
    view full answer...

  • Issues with Brakes Not Activating with Curt Discovery Brake Controller on 2015 Ram 1500
  • I spoke with my contact at Curt about the issues you and other customers have experienced with their Curt Discovery Brake Controllers # C84VV and newer model Ram trucks. The problem stems from a low voltage output on the stoplight wire on the truck. The Discovery requires 12 volts from the stop light wire in order to recognize the signal and activate the trailer brakes. Curt has found that the newer Ram trucks often have less than 12 volts at the stop light wire when the brake pedal
    view full answer...

  • Parts Needed and Method to Install Curt Trailer Brake Controller on 2007 Chevy Silverado
  • You may or may not need an additional wiring harness to install the # C84VV. If your 2007 Chevy Silverado is the new body style you will not necessarily need the harness, but if it is a Classic you will need harness # C51352 because there is a port under the dash on the floor, on the far left. One end plugs into the controller, the other end plugs into the port. The port is located in a junction box. There is a black cover on the box. Remove the cover and plug in the harness in the
    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...

  • Turn Signals Work But Brake Lights Do Not Light Up
  • You came from a brake controller page when you asked the question. Is this issue related to the installation of the brake controller? Or are we just talking about brake lights on a trailer or vehicle? If it is on the trailer then usually there is a bad ground connection since the brake lights draw more constant power than the turn signals. Make sure that the vehicle side and trailer side connectors are clean and free of corrosion inside and out. The main connector grounds should be attached
    view full answer...

  • How to Find and Access the Brake Light Switch Wire on a 2015 Toyota Highlander for Brake Controller
  • If you check out the video I attached you will see how we installed a brake controller in a very similar 2014 Toyota Highlander as your 2015 model. We had to remove the lower dash panel (13:00 mark of the video), to make accessing the green wire possible. The kit used for the install in the video is the part # ETBC7.
    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...

  • 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 # C84VV 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 3034-P won't work.
    view full answer...

  • Does Dealer Need to Turn on Aftermarket Brake Controller in a 2015 Ford F-150?
  • There will be no need for you to go to take your 2015 Ford F-150 to the dealer to have them turn on an aftermarket brake controller. The brake controller I recommend that you need only an adapter for is the Curt Discovery # C84VV. Since you already have the factory tow package, just use the Plug-In Wiring Adapter # C51436. Plug one side into the brake controller and the other side into the wiring on your F-150 and you are done.
    view full answer...

  • Brake Controller Installation 2004 Chevy Avalanche
  • Your Avalanche should be prewired for a brake controller. Check the fuse panel in the engine compartment. Remove the outer and the inner fuse box cover, and on the inboard side of the fuse box, you'll see two threaded studs. The stud closest to the rear of the vehicle powers the brake controller, there should be a 30A fuse installed next to it. The stud closest to the front of the vehicle powers the 12V feed to the trailer connector. There should be a 40A fuse installed next to it. If the
    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...

  • How to Wire in a Curt Trailer Brake Controller to a 1999 Ford F-150
  • Actually you have a couple of options. First, you could use harness # C51322 in place of the harness for your 1999 Ford F-150. It will plug into the Curt brake controller and the truck. This is the easiest option. The other option is to cut off the plug on the Curt brake controller # C84VV and hardwire it to the Ford harness. You would have to know the functions of the wires on the Ford harness. It may be labeled or printed on the harness. If your Ford harness has Red, Light Green,
    view full answer...

  • Which is Better a Time Delayed or Proportional Brake Controller
  • Between the two controller I would go with the proportional Curt Triflex part # C51140 over the time delayed Curt Discovery part # C84VV. A time delay controller is so named because there is a delay between the time that you initially apply the brakes in your tow vehicle and the time that the controller reaches maximum power output. Unlike a proportional brake controller, which activates your trailer's brakes based on the deceleration of your tow vehicle, a time-delayed controller sends
    view full answer...

  • Comparing Curt TriFlex Trailer Brake Controller To Curt Discovery Trailer Brake Controller.
  • The main difference is the Curt TriFlex Trailer Brake Controller # C24VV is a proportional brake controller while the Curt Discovery Trailer Brake Controller # C84VV is a time delay controller. The proportional controller will automatically adjust power sent to your trailer brakes based on how hard you are braking, while the time delay always sends the same force no matter how soft or hard you are braking. Those with time delay controllers will often have to reach down to crank up the
    view full answer...

  • Installing a Brake Controller in a 2009 Chevy Suburban
  • The 2009 Chevy Suburban does not have a port to plug in a brake controller which is the same as the trucks of the same year. But it does have the tow package wire bundle up under the dash, to the left of the steering column, held together with a white tag. Pull the wire bundle out to wire in a brake controller. With Curt brake controller # C84VV you will also need pigtail # C51515. Then you can make the following connections: Vehicle red/black wire to controller black wire for 12
    view full answer...

  • Recommended Brake Controller Wiring Harness For 2013 Toyota Tundra
  • If your 2013 Toyota Tundra has the factory 7-way installed, the Curt Custom Wiring Adapter, part # C51362 will be what you need to connect the Curt Discovery Trailer Brake Controller, part # C84VV. If you have a 4-way connector installed on your Tundra, part # C51515 is what you need. This harness is used on a vehicle that does not have a factory tow package or on one that has a brake control harness but is not equipped with a plug-in port. If your vehicle doesn't have a factory tow
    view full answer...

  • Brake Controller Installation on 2011 Toyota Tundra
  • If your 2011 Tundra has the factory tow package, which includes the factory installed 7-way trailer connector on the rear bumper, it will be equipped with the tow package plug under the dash, as shown in the photo I've edited for you. Some models with the factory 4-pole (or 4-pin) trailer connector will also have the plug under the dash, you'll need to look for a white plug located above and to the left of the emergency brake pedal, above the toe kick. Occasionally, the plug will be located
    view full answer...

  • Gauge Wire Recommendation for Installing Curt Discovery Brake Controller
  • Curt does recommend that you use 10 gauge wire like part # 10-1-1 sold by the foot to install the Curt Discovery # C84VV, but the common recommendation for installing brake controllers is to use 12 gauge or larger wire. If you use 12 gauge wire you should be just fine, especially since you will only be activating 4 brake assemblies.
    view full answer...

  • Does Computer Need To Be Flashed When Installing Brake Controller On 2021 F150?
  • The OEM brake controller requires your 2021 Ford F-150 to be flashed by the dealer. However, an aftermarket brake controller like the Curt TriFlex NEXT # C24VV does not require the dealer to flash your truck's computer. You will need Plug-In Wiring Adapter # C51436 to connect the brake controller to the factory plug-in on your truck. Keep in mind, not all 2021 models have the necessary 12V going to the plug-in, so you may end up needing to install Power Wire Kit for Electric Trailer Brake
    view full answer...

  • Which Curt Brake Controller Adapter Fits a 2015 Ford F-150
  • The Curt adapter, part # C51436, fits your 2015 Ford F-150. It plugs into the factory connector under your truck's dash and fits Curt brake controllers like the Venturer # C74VV.
    view full answer...

  • Hardwiring in a 7-Way Trailer Connector and Brake Controller on a 2018 Ford F-150 w/Factory 4-Way
  • I did some checking and right now, in order to add a 7-Way trailer connector to your 2018 Ford F-150, you will need to use our hardwire kit # ETBC7. The factory brake controller wiring harness might be in place but if it is for sure and if that means you can install the Ford brake controller I cannot answer. I am sure you can though because I know in other Ford F-150s you can. Or you could install an aftermarket brake controller using wiring harness # 22292 and a Tekonsha brake controller.
    view full answer...

Info for these parts were:

Employee Leah B
Edited by:
Leah B
Employee Lindsey S
Written by:
Lindsey S
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Chris R
Video by:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
Kristina F
Employee Isabelle B
Updated by:
Isabelle B
Employee Adam E
Test Fit:
Adam E

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