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  1. Trailer Brake Controller
  2. CURT
  3. Electric
  4. Electric over Hydraulic
  5. Time Delayed Controller
  6. Up to 4 Axles
Curt Discovery NEXT Trailer Brake Controller w/ Custom Harness - 1 to 4 Axles - Time Delayed
CURT

Curt Discovery NEXT Trailer Brake Controller w/ Custom Harness - 1 to 4 Axles - Time Delayed

Part Number: C59SV
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$99.95
Trailer Brake Controller
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This compact brake controller fits nicely in your cab. You can mount it anywhere you like and it's only 1" thick. The LED display is large and bright so it's easy to see, while the large manual override is easy to reach in a pinch. Great Prices for the best trailer brake controller from CURT. Curt Discovery NEXT Trailer Brake Controller w/ Custom Harness - 1 to 4 Axles - Time Delayed part number C59SV can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (1)
  • Q & A (0)
  • Videos (7)
  • Photos

CURT Trailer Brake Controller - C59SV

  • Electric
  • Electric over Hydraulic
  • Time Delayed Controller
  • Up to 4 Axles
  • CURT
  • Dash Mount
  • Under-Dash Box
  • Automatic Leveling
  • LCD Display
  • Up to 360 Degrees

This compact brake controller fits nicely in your cab. You can mount it anywhere you like and it's only 1" thick. The LED display is large and bright so it's easy to see, while the large manual override is easy to reach in a pinch.


Features:

  • Time delayed: activates trailer brakes with preset intensity
  • Rocker switches control gain and load settings
    • Gain: adjusts on scale of 0.5 to 9.9
    • Load: adjusts on scale of 1 to 9
  • Large pinch-trigger manual override
    • Easy to reach without taking your eyes off the road
  • LED display is bright, large, and adjustable
    • Displays error messages so you can troubleshoot
    • Shows settings using numbers and letters
    • Adjusts brightness for best visibility
  • Auto-sleep mode activates after 5 minutes to prevent draining the battery
  • No mounting restrictions: install anywhere at any angle
    • Included mounting bracket and hardware hold the unit flush against the dash
  • Custom-fit wiring harness plugs right into your vehicle


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
  • Warranty:
    • Limited lifetime on brake controller
    • Limited 1-year on wiring harness


Gain and Load Adjustment

Curt Discovery NEXT

Gain is the maximum amount of power that will be applied to your trailer's brakes. 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. Use the orange rocker switch to adjust the gain on a scale of 0.5 to 9.9 in increments of 0.5.


Once you have the gain set, you can fine-tune your braking by adjusting the load control on a scale of 1 to 9 using the black rocker switch. This controls the aggressiveness of your trailer's braking, meaning how quickly the brakes reach the maximum braking level. If your vehicle takes too long to come to a stop, increase the setting. If it stops too abruptly, decrease the setting.


LED Display

The LED display on the Discovery is large and easy to read at a glance. You can adjust the brightness or trigger night mode so it won't glare obnoxiously on your dash. It also will give you clear error messages you can use to troubleshoot.


Curt Discovery NEXT troubleshoot

Installation

Because inertia plays no role in the functioning of this controller, your mounting options are limitless, so long as you can still easily access 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.


The included custom-fit adapter plugs into the port on your vehicle's built-in brake control wiring harness, which you'll find underneath the dash, to the left of the steering column, taped to another harness near the emergency brake pedal. Once you're plugged into your factory port, just plug the other end of the adapter into the Discovery. Because there are no wires to connect, installation is not permanent. You can unplug and remove the controller at any time to transfer it to another vehicle or securely stow it away.


Note: If you don't already have a 7-way plug at the back of your vehicle, take a look at our exclusive 7- and 4-way brake control installation kit (ETBC7 - sold separately).


What is Time-Delayed Braking?

what is time-delayed braking

Time-delayed braking means that when you apply the brakes in your vehicle, the controller activates the trailer brakes at a pre-set intensity and rate. 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

51446 Curt Quick Plug Brake Control Adaptor Harness

Installation Details C59SV Installation instructionsAlternate Instructions C59SV Installation instructions



Video of Curt Discovery NEXT Trailer Brake Controller w/ Custom Harness - 1 to 4 Axles - Time Delayed

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




Video Transcript for Curt Discovery NEXT Trailer Brake Controller w/ Custom Harness: The Breakdown

Hi, everyone, Aidan here with etrailer. Today, we're gonna be taking a look at the Curt Discovery NEXT Brake Controller. This is gonna be a time-delayed brake controller. Let's check it out. When it comes to brake controllers, there's gonna be two options you're probably looking at, time-delayed and proportional. Proportional is gonna be the nicer of the two where if you lightly press your brakes, the brakes in your trailer are also going to be lightly applied.

If you slam on the brakes, the brakes in your trailer are also going to match that proportionally. With a time-delayed brake controller, it's gonna be applied at the same rate every time, so you don't get that fine adjustment. You can still adjust the settings, but it's gonna be the same every time. So if we're rolling up to a stop sign, coming to a very slow and predictable stop, and our gain and sensitivity are set kinda high, it's gonna be applying the brakes pretty hard. Same for if we have those set kind of low and we slam on our brakes on the highway, because someone in front of us stopped, the brakes aren't gonna be applied in a similar fashion.

There is the manual override you can always pinch to apply, but that's just something to know with a time-delayed system like this. Let's talk about those controls. The manual override is a pinch style where I'm pressing the button with my thumb. It's pretty easy to reach from the driver's seat where I've got it all set up. So whenever I'm driving, I feel like if I needed to suddenly reach down and get it, I can find that pretty easily every time, and index my thumb well enough to get a good press.

So good to know for emergency situations where you might need that. Now, there's gonna be two sets of controls here for the gain and the load. The orange buttons are going to adjust our gain or our brake power. You can go anywhere from 0.5 up to 9.9, and this is going to signify the different power levels. So 0.5 is the weakest, and as I go up, it's going to get more and more powerful.

So if I have a heavier trailer that needs more stopping power, I'd set it higher. The next one is going to be our load. This is basically how quickly the brakes are applied, so that can go from 1 to 9. At 1, it's going to be the lowest, and at 9, it's going to be the fastest or the quickest application. So basically, ramping from zero to fully applied where we have that gain set. So for demonstration, I'm just going to put the gain all the way up to max, and I'm gonna hit the brakes. And you'll see, slowly, it'll climb up to where we set it. And if I turn that load down all the way to 1, it's going to climb much slower to that designated power level. So you can fine tune this to your own trailer application, and depending on how heavy of a trailer you have and how good the brakes are, that will determine what you want those set at. But generally, that gain is going to be for the weight of the the trailer, and you can kinda determine the load from there. Now, to give a visual indicator of that gain, we've got our vehicle hooked up to a trailer simulator box. I've got the gain set to the absolute lowest it goes, so that's gonna be the lowest brake power, and you can see where the voltage is reading right now. If I turn the gain up to 5, that's gonna be right in the middle, you'll see that voltage will climb up higher. And then if I turn it up to the max, 9.9, you'll see that climb up even higher. So this is just to give you some visual indication of that different power level of the braking. This is designed to work with trailers up to four axles and will work with PWM, ABS, cruise controller, and electric-over-hydraulic brakes. So keep that in mind as you're picking this out if it's gonna work with your trailer. Up to four axles, I'd say for the most part, you're gonna be totally fine. If you don't need one that can go up to four axles and you like this style, Curt does make a similar version that's up to three axles. So that's something to keep in mind too if you don't need this much. Now, the big advantage to something like this, and something you probably noticed if you're familiar with brake controllers already, is going to be the size. It's a lot smaller and a lot more shallow than the brake controller we pulled out of this 4Runner today. And that's great, because even though it's mounted externally, it's not going to be in the way of your knees as you're getting in and out of the vehicle. And as I'm in a normal driving position, I've got plenty of distance between it and my leg. I don't feel like I'm gonna be hitting it all the time, 'cause it doesn't stick out very far. That's thanks to the very low profile bracket. We've got it mounted up with the included double-sided adhesive, but you can also use the included self-tapping screws. Just know that they're pretty long, and you're gonna have to have clearance behind there. But this will just click into place over that bracket. (bracket clicking) You can hear that snap in, and that's what holds it in. One thing to note is that because it's not inertia based, you can mount this really wherever it fits best, so it doesn't necessarily need to be level or facing any certain direction. Now, the installation can vary depending on your vehicle. I'd say check for what your vehicle has in terms of pigtail adapters. That's what we we're able to do with this option from Curt. We offer this pigtail adapter on our site here at etrailer, and that allows us to just plug directly into the vehicle's prep package for this. So just check to see if your vehicle can do that, because that's definitely going to be the easiest option as far as installation goes, 'cause it just plugs right in and all you have to worry about is mounting up that bracket, and then tucking up that wire loom from the adapter. Something else to note is that that LED readout does have a number of different functions. You can adjust the brightness, there's a day and night mode, but it's also gonna give us readouts for different errors. So if something's maybe not fully connected or something, it will tell us here. Your instructions give you a full list of all the different errors that can occur and short descriptions of what they are. But because its screen gives full text readouts, it's pretty easy to tell what's going on based on what it's showing. Like for example, when we first hooked this up to our simulator box, we didn't have the 7-way plugged in all the way, and it told us it wasn't connected. So we went back there, pushed the plug in the rest of the way, and then it worked properly. So that's going to help with just troubleshooting anything that may be occurring in your setup. For me, I think this is a nice middle ground between having the controls, easy to access, and having that LED readout, so you can see those errors and the power, and just have a little bit more control over it while still staying out of the way and being flushed to the dash. But that was just our look at the Curt Discovery NEXT Brake Controller. Thanks for watching.


Customer Reviews

Curt Discovery NEXT Trailer Brake Controller w/ Custom Harness - 1 to 4 Axles - Time Delayed - C59SV

Average Customer Rating:  5.0 out of 5 stars   (1 Customer Reviews)

This compact brake controller fits nicely in your cab. You can mount it anywhere you like and it's only 1" thick. The LED display is large and bright so it's easy to see, while the large manual override is easy to reach in a pinch.

by:

I purchased this harness primarily to get the plug for my 2023 Grand Cherokee L Overland (with tow package). I had an Odessey brake controller with a cord for a Ford truck. The black fitting on this cord is identical to the plug coming from my brake control (both male plugs) so some splicing is required to utilize my old controller. I had difficulty locating the plug in my Jeep and could not locate photos or video of the plug location in the WL platform (current model Grand Cherokee). I have attached photos of where to locate the plug. It was a bit more forward and wrapped up with black electrical tape as shown in my photo.
If the black plug matches your brake controller, this should work perfectly for you.



by:

Works as advertised. Used to hook up a triflex brake controller into a 2015 Jeep Grand Cherokee with tow package. Very easy installation.



by:

Fast shipping and communicative online purchase! Brake controller comes with harness for your vehicle and just plugs and plays.



by:

Perfect fit for 2024 Jeep Grand Cherokee L.



by:

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



by:

Worked perfectly to connect our Curt Brake Controller to our Jeep Grand Cherokee's wiring harness. Nothing to cut or trim.



by:

Tested . Work fine and advertised



by:

Both items worked great and was easy to install.



by:

excellent service and delivery.



by:

Easy to install. Looks great and works well. The best part is how discreet it is. Love it.



by:

etrailer has great videos for installation and information which works well for your personal application. Cable hidden under dash.



by:

All great products and fast shipping. I had a small problem and tech support answered my question immediately. Saved over $250 dollars over dealer prices and with instruction videos installation was a snap. etrailers has become my go to for hitches and accessories.

Thanks, You Guys are the greatest.



by:

Perfect fit for my 2016 Jeep Grand Cherokee. 5 minute installation.



by:

Definitely a must for installing the Curt Echo under-dash brake controller in a Jeep Grand Cherokee. No wire splicing required; plug-n-play!



by:

GOT MY CURT BRAKE CONTROLLER WITH EASY CONNECT FOR MY JEEP GRAND CHEROKEE ,EASIEST AUTO PART I HAVE EVER HAD TO INSTALL.BUT MY VEHICLE WAS SET UP WITH THE TOW PACKAGE..



by:

Like its compact size and simple operat ion.



by:

Very helpful, knowledgeable and friendl y!



by:

Worked great. made installation of my brake controller very easy.



by:

Controller worked well. Installation took some effort, but overall was a good piece of hardware.



by:

Shipped same day. Easy to install with the custom wiring adapter. Excellent customer service.



by:


I have found the products that I
ordered have been just what I need, this site is great, the people are very helpful, & know what they are doing, this is the only place that I will shop for my trailer needs,



by:

I’ve bought several items in the last year from etrailer. The service and duality never disappoint!



by:

Excellent product. Easy to install



by:

Worke great on my Jeep Grand Cherokee



by:

Worked great and installed easy. Especially with the added oem plug kit.


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    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...
  • Brake Controller Install Connector that Fits 2022 Jeep Cherokee L
    We do have a brake controller install harness from Curt that fits your 2022 Jeep Grand Cherokee L with the part # C51446 but the Tekonsha you mentioned does not fit.
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  • Recommended Brake Controller and Wiring for 2021 Jeep Grand Cherokee
    I do have a recommendation for you but we do not have a Redarc brake controller available for your 2021 Jeep Grand Cherokee. However, the similarly designed Curt Spectrum Trailer Brake Controller, # C51170 is great option and its installation is made easier using the Curt Custom Wiring Adapter for Trailer Brake Controllers, # C51446. The Curt # C51170 is a proportional brake controller installs anywhere in your cab and at any orientation. The push-button rotary control knob mounts on...
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  • Brake Controller Install Harness that Fits 2023 Jeep Grand Cherokee L
    Curt has a brake controller install harness that fits your 2023 Jeep Grand Cherokee L with the part # C51446 which you could use with a Curt brake controller like the Triflex part # C51140. To find the connector in your vehicle you'll need to drop the lower dash panel and then look for the gray connector behind the PCM near where the e-brake pedal is.
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  • Installing an Electric Trailer Brake Controller in a 2018 Chrysler Pacifica
    Since you already have a 7-way trailer connector and a brake controller all you should need is the adapter to connect the controller. That's assuming the 7-way is factory installed. If you've installed it yourself, or had it installed aftermarket let me know. If it's a factory 7-way there's going to be a connector under the dash above the steering column not far from where it goes through the firewall. The connector you're looking for probably has a green cover over it. Once you find...
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  • Custom Brake Controller Wiring Harness for 2019 Jeep Grand Cherokee and Installation Location
    For your 2019 Jeep Grand Cherokee, the harness connection point is under the dash to the left hand side. I've attached a photo to help as well as a video of this installation. If you are using a Tekonsha Brake Controller like the Prodigy P3 # 90195 then you will use # TK93VR for your wiring harness. If you are using a Curt controller like # C74VV you will use harness # C51446. Finally if you are using a controller like the RedArc Tow Pro Elite # RED44FR, then you will use the pigtail...
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  • Is the Curt TriFlex Brake Controller Compatible with a 2014 Dodge Durango and 2010 Coachmen 290BHS
    Yes, the Curt TriFlex Brake Controller, # C24VV, and the Custom Wiring Adapter, # C51446, will work with your 2014 Dodge Durango and your 2010 Coachmen 290BHS travel trailer. Since your Durango has the factory tow package, the installation will be easy with the plug-in custom wiring adapter. The TriFlex brake controller was designed to work with trailers with up to 4 axles and 8 brake assemblies and it is compatible with electric and electric-over-hydraulic trailer brakes. The brakes on...
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  • Trailer Wiring Harness & Brake Control Wiring for 2016 Jeep Grand Cherokee with/without Tow Package
    If your 2016 Jeep Grand Cherokee does not have a trailer connector at the back but is pre-wired with the factory tow package then you can add a 4- and 7-Way connector using # HM40975-11933. Please note: It may be necessary to see a local Jeep dealer to activate the tow package wiring circuit. Models that did not come with the factory tow package would need to use # 118727 to add the 4-Way and then # ETBC7 to add the 7-Way. For a brake controller, if your Jeep did come with the factory...
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  • Is the LED Brightness Adjustable on Redarc Tow-Pro Elite Trailer Brake Controller
    The LED brightness in the control knob for the Redarc Tow-Pro Elite Trailer Brake Controller # RED44FR is not adjustable. However, the LED indicator brightness will reduce after you adjust the braking power or use the manual override. This is designed to be less intrusive on driver's vision at night. If you have the tow package on your 2020 Chrysler Pacifica you will also want the # RED77FR for installation. If you are still concerned about the brightness of the control knob you may also...
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  • Brake Controller Wire Harness Needed For A 2024 Jeep Grand Cherokee L With Tekonsha Brake Controller
    Hey Joan, There isn't a Tekonsha custom-fit harness but there is a Curt harness # C51446 that you can cut the connector off of and butt connector # 224775 on a Tekonsha connector # 20127 so that you don't cut into your factory wiring. You'll just match the wires color for color and would be able to plug the gray connector into your brake controller port and the Tekonsha connector into the brake controller.
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  • Can I Install a Curt Spectrum on a 2021 Jeep Grand Cherokee with Factory Tow Package
    You've got nothing to worry about on this one. Brake controllers are fairly universal, so you will be able to use the Curt Spectrum # C51170 in your 2021 Jeep Grand Cherokee. Additionally, since you have the factory tow package you can use the # C51446 as the plug and play adapter to make this an easy installation. I was able to confirm this for you with my contact at Curt.
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  • Recommended Brake Controller for 2024 Jeep Grand Cherokee L With Tow Package
    For your 2024 Jeep Grand Cherokee L I recommend the Redarc Tow-Pro Liberty Brake Controller # RED24FR. This is a simple and reliable brake controller that won't take up space in the cab of your Jeep. The main unit installs behind the dash with only the control knob visible for a nice clean look. The knob controls the braking power and acts as the manual override. For a plug and play installation you can use the Curt # C51446 wiring harness along with the adapter # 331-TPH-019.
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  • Parts Needed to Install a Curt Venturer Brake Controller in a 2013 Dodge Durango with OEM 7-Way
    Since your 2013 Dodge Durango has the factory installed 7-Way, to install a brake controller you will just need the brake controller itself and the proper wiring harness to plug it into your Durango. If you want to go with the Curt Venturer, # C74VV, then the only other part you will need is wiring harness # C51446. I have included a link to the installation details for you. The wiring harness plugs into a connector already on your vehicle. The connector is located underneath the dash,...
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  • Will Curt Echo Brake Controller Fit a 2024 Jeep Grand Cherokee with Factory Tow Package
    Yes, the Curt Echo is compatible with the factory tow package on your 2024 Jeep Grand Cherokee, and it comes in the following designs: - Echo # C51180 - Echo Under-Dash # C27JR and Wiring Adapter # C51446 - Echo In-Line # C79DR Most people are referring to the classic Echo # C51180 when they ask about the Echo, but these other options are great alternatives as well; my favorite being the In-Line because it installs at the back of your vehicle but it's behind the 7-Way so you don't...
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  • What Plug-and-Play Wiring Harness Works with the Curt Spectrum for My 2022 Jeep Grand Cherokee?
    For the correct plug-and-play wiring harness to go with the Curt Spectrum Trailer Brake Controller # C51170 on your 2022 Jeep Grand Cherokee with a 7-way and tow package, that is the Curt Custom Wiring Adapter for Trailer Brake Controllers # C51446. With this adapter, you will be able to simply plug in the Spectrum wiring right into the port under your dash for easy installation.
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  • Trouble With Brake Controller Connecting To Trailer on a 2022 Jeep Grand Cherokee L
    If your 2022 Jeep Grand Cherokee L has the factory tow package and you are using the Adapter # C51446 to connect your Curt Brake Controller # C87QV I would start by checking the connections. It may be one of the terminals in the connector ends have slid out of the connector. If your controller is not getting power you will want to check your owners manual to find the correct fuses/relays to determine if they need replaced. Please let me know if you are having a different problem or use...
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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Sabrina W
Written by:
Sabrina W
Employee Amanda K
Updated by:
Amanda K

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