Curt TriFlex NEXT Trailer Brake Controller - 1 to 4 Axles - Proportional
Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In
Part Numbers: C24VV,C51525
Retail:$191.40
Our Price: $139.36
You Save: $52.04
In Stock
Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.
Curt TriFlex NEXT Trailer Brake Controller - 1 to 4 Axles - Proportional
part number: C24VV
Simple and compact, this proportional brake controller has an intuitive design that's easy to use. Includes a simple digital display, 10 gain settings, a pinch-trigger manual override, and built-in safety features.
Features:
- Brake controller activates trailer brakes in proportion to your vehicle's braking action
- Automatically adjusts trailer's braking based on deceleration of tow vehicle
- Simple digital display shows you the braking and sensitivity settings as well as error codes
- Intuitive controls keep settings within easy reach
- 10 Levels of boost let you adjust initial braking power and aggressiveness for smooth, safe braking
- Pinch-trigger manual override allows you to control trailer sway or stop in emergencies
- Triple-axis, motion-sensing accelerometer provides highly responsive, smooth stops
- Automatically increases power when going downhill and decreases when going uphill
- Integrated safeguards protect your vehicle, the trailer, and the controller
- Runs continuous diagnostic checks to alert you to any potential problems
- Minimizes drain on car battery by entering sleep mode after 5 minutes of inactivity
- Keeps trailer brakes from overheating by reducing power output to them during prolonged stops
- Defends brake controller and trailer breakaway systems against shorts
- Prevents positive and negative power reversal with built-in polarity protection
- LED display shows power adjustments in 0.5 increments
- Brightness is adjustable for optimal visibility
- Compatible with ABS brakes, cruise control, low-voltage wiring, multiplex wiring, and PWM systems
- Automatic leveling lets you mount at any angle
- Mounting bracket and hardware included
- Plug-in, vehicle-specific brake control adapter (sold separately) can be used to reduce installation time on certain vehicles
Specs:
- Application: trailers with up to 4 axles (8 brake assemblies)
- Compatible with electric or electric-over-hydraulic trailer brakes
- Dimensions: 4" long x 3-1/8" wide x 1" tall
- Limited lifetime warranty
LED Display
The LED display on the TriFlex 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.
To change any of the settings, press the silver mode button on the front of the brake controller and which mode you are currently on will show on the LED display. When you're on the setting you want to adjust, use the black rocker switch next to the mode button to adjust it up or down.
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 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 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 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 TriFlex 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.
Safety Features
The TriFlex offers key safety features to prevent damage to various components of your towing setup. This starts with built-in protection against shorts and positive and negative power reversal, as well as continous diagnostic checks to alert you to any potential problems as they come up. To minimize the drain on your vehicle's battery, the TriFlex will automatically go into sleep mode after 5 minutes of inactivity. Sleep mode will turn off again the moment you press the brake pedal.
Quick Installation
Automatic leveling means you can mount the unit at any 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.
Proportional Braking
The Curt TriFlex NEXT brake controller comes equipped with proportional braking to give you the best towing experience. Proportional braking means that your trailer brakes mimic your tow vehicle's brakes. If you slam on the brakes in your vehicle, your trailer brakes will activate with the same intensity; if you brake lightly, your trailer brakes lightly too. The trailer's braking is in proportion to your vehicle's braking. This saves wear and tear on the tires and the brakes on both your vehicle and trailer.
The TriFlex uses an internal 3-axis accelerometer to sense how your vehicle is braking so it can send the right amount of braking power to your trailer. It measures the inertia of your tow vehicle and activates the trailer's brakes to slow at the same rate. The result is uniform braking across your towing setup. No push-pull action - just smooth, proportional braking every time.
51146 Curt Tri-Flex NEXT Proportional Trailer Brake Control
Replaces Curt 51140
Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In
part number: C51525
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 beneath 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 beneath 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. The harness is located underneath the dash, to the left of the steering column, and it is taped to another harness near the emergency brake pedal.
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.
51525 Curt Quick Plug Brake Control Adaptor Harness
Customer Satisfaction Score:
96% were satisfied with this product
4% of customers were not satisfied
- Defective
- Wrong item was ordered
- Product did not meet expectations
Customer Reviews
Curt TriFlex NEXT Trailer Brake Controller - 1 to 4 Axles - Proportional - C24VV
Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In - C51525
Average Customer Rating: 4.7 out of 5 stars (123 Customer Reviews)
Simple and compact, this proportional brake controller has an intuitive design that's easy to use. Includes a simple digital display, 10 gain settings, a pinch-trigger manual override, and built-in safety features. 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 beneath your vehicle's dash.by: Lee04/22/2024
Arrived as planed and was much smaller then my old clunky one. The custom cable harness was easy to install. Finding a flat spot to mount the controller took the longest to find the perfect spot. I gave a five stars because every was as it said. (Plug and play)
by: Thomas03/07/2024
Chevrolet Silverado
This is used on a 2020 Chevy Silverado 1500 pulling a 16' enclosed cargo trailer. With the appropriate adaptor cable it was very easy to install, just plug in and mount in a convenient spot. Once installed it was simple to get it matched to the weight and brake setup of the trailer. Close to 6k miles with it so far & very happy.
by: Thomas 05/19/2024
Excellent product. Easy install. Customer service was exceptional with real-time communications every step of the way. Highly recommend e-trailer for any of your trailering needs.
by: Brian 04/21/2024
2024 Chevrolet Silverado 1500
The combo of the Curt Spectrum brake controller and wiring harness made installation a snap
by: Loren 05/14/2024
Excellent product, easy installation just as described. Good quality as expected from E trailer.
by: Walter06/07/2024
All the information I needed was on your site. Got the correct adapter cable and was able to just plug in the controller.
by: Chris03/29/2024
The product I ordered was not available. There was a suggestion for another product, without the full knowledge that there are multiple other products, and I was only given one choice. It is what it is, if I knew of options, I would’ve made a different choice. Not a great company in terms of knowledge and service
by: Adam 02/07/2024
The control works great. The reason for knocking off a star is that the control rattles whenever there is a vibration in the truck. While annoying, it doesn't affect the operation.
by: Jon05/31/2024
Having issue with intermittent power.
by: Dennis 02/11/2024
I have not used this device yet but I have installed it. It looks kool. I hope installation orientation doesn't matter too much.
by: Travis 09/06/2022
2022 Chevrolet Silverado 2500
The wiring adapters worked great. It made installation quick, easy, and clean.
Travis
9/8/2023
The wiring adapter made connecting the trailer brake controller so quick and easy that I dont think I will ever use butt splices again.
Mike L.
11/1/2023
@Travis The custom brake controller adapters like the Curt # C51525 certainly make the brake controller install much quicker and less complicated!
by: Henry 03/15/2024
The service and speed of delivery has always been great, thank you E Trailer.
by: Dan 03/29/2024
Never a problem with etrailer
by: Mitchell05/20/2024
Josh was excellent in listening and helping discuss my options. The trailer brake improved my driving and safety tremendously with a 14k dump trailer. Thanks, Josh.
by: Frank 04/20/2024
Extremely easy to install and small enough to not be in the way. Works great as well….highly recommend.
by: Mike05/28/2024
Scratched screen straight out of the package/from the factory. Haven't installed yet. Super fast shipping!!
by: Richard 05/30/2024
I like the way it installed
by: Craig 05/14/2024
As advertised- very easy to install!
by: Tom 04/09/2024
Was easy to install and works well.
by: Mickey 04/20/2024
Good ..except for shipping thru mail.
by: Damon 04/09/2024
Couldn’t get any easier to install. Took less than ten minutes.
by: Chris 04/05/2024
Everything got here fast, and looks to be exactly what I need. Thank you!
by: Richard 03/28/2024
I have not installed it yet, but it looks good and thank you for the fair shipping Richard
by: Damon 04/09/2024
Makes hookups fast and easy.
by: Bill 03/13/2024
Perfect communication and quick deliver y!
25
123
Show More Reviews Ask the Experts about this Trailer Brake Controller
Do you have a question about this Trailer Brake Controller?
- 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 # C24VV 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.
view full answer... - Troubleshooting Curt TriFlex C24VV Saying D.C and Locking Up Trailer Brakes When Brakes Are Applied
- I would be happy to help!
Since your Curt TriFlex Trailer Brake Controller # C24VV is saying D.C. and locking up the trailer brakes there is a short in a wire or the controller, or there is an issue in the physical connectors.
I recommend starting with the easiest things first which is checking both the trailer and vehicle connectors for corrosion or damage that could be causing the connection issue.
Next using a circuit tester like # PTW2993 test the 5 o'clock brake output pin
view full answer... - Trailer Brakes Only Work with Manual Override and Not With Brake Pedal on 2009 Dodge Ram 1500
- Nine times out of ten, it is not the brake controller that is causing the problem. But in this case, with the output not changing when you step on the brake pedal, there does seem to be an issue. Typically when there is no braking with the brake pedal that indicates a connection problem with the red wire. Test for power on the red wire using a circuit tester such as # PTW2992. It should have power when the pedal is pressed.
If it does not have power when the pedal is pressed check the
view full answer... - Troubleshooting Error Code A.E. on Curt TriFlex Trailer Brake Controller C24VV
- The operating instructions for the Curt Triflex brake controller # C24VV, which are linked for you, indicate on page 19 that if the unit displays the error code A.E. this indicates an internal fault with the controller's accelerometer. This is not a serviceable problem and the unit should be replaced or referred to Curt for warranty service under the terms of the limited lifetime warranty.
You may care to review the linked article on brake controllers.
view full answer... - Digital Display on Curt TriFlex Brake Controller Just Shows an L
- The L. display should show up on the Curt TriFlex brake controller # C24VV, when it is plugged in. When you are installing the controller, the trailer should not be connected.
The lever or button on the left side of the controller is the sensitivity adjustment. The L. should change when that lever is moved. You can also try resetting the controller by unplugging it for a few minutes and then plugging it back in (without the trailer connected). If these things do not fix the issue then
view full answer... - How Does Curt Triflex Brake Controller Unplug to Reset
- On the backside of your Curt Triflex part # C24VV trace the wiring for about 8 inches and you'll come to a plastic harness that you'll need to unplug. Once you wait a few seconds go ahead and plug it back in.
view full answer... - How to Install a Curt TriFlex Brake Controller on a Toyota 2013 RAV4 XLE
- Your Curt Triflex brake controller part # C24VV can easily be wired to your 2013 Toyota RAV4 but it will require you to hardwire most of the connections.
You will need to start with a 4-way (if you do not have one). For that you would want the # 118578.
From there you would need to convert the 4-way to a 7-way so that you can install the brake controller. For that you will want the Brake Controller Install Kit and 7-Way Adapter part # ETBC7. I attached installation instructions and
view full answer... - What Does Sensitivity/Boost Setting of Curt TriFlex Brake Controller Refer To
- The Curt Triflex Brake Controller part # C24VV that you referenced has 9 different sensitivity settings so that you can adjust how aggressive you want the inertia sensor to react to deceleration. Since not all trailer brakes are as sensitive as others this allows you to tailor the braking to the trailer. So basically the higher the sensitivity the harder the brakes will apply with the same level of deceleration. This is also known as the "boost" setting as well.
view full answer... - Solution for Curt Brake Controller with AE Error Code
- The operating instructions for the Curt Triflex brake controller # C24VV, which are linked for you, indicate on page 19 that if the unit displays the error code A.E. this indicates an internal fault with the controller's accelerometer. This is not a serviceable problem and the unit should be replaced or referred to Curt for warranty service under the terms of the limited lifetime warranty.
We've found that the Curt brake controllers just aren't as reliable as other options so if I were
view full answer... - Curt Brake Controller # C24VV on 2012 Honda Odyssey Showing OL Error Code
- The OL error code you mentioned indicates an short somewhere in the brake controller output circuit between the blue wire exiting the brake controller and the trailer connector. You can confirm this by severing the blue wire behind the brake controller, being sure to leave enough room to reconnect the wire. If this makes the OL code disappear, you have confirmed the short. If this is the case, you'll need to rewire the output circuit, using 10 gauge wire like part # 10-1-1.
Chances
view full answer... - Troubleshooting False Brake Output Readings On Curt TriFlex Controller While Driving Without Trailer
- If you are seeing false readings on the Curt TriFlex Trailer Brake Controller part # C24VV, I recommend a simple reset first which can be done by unplugging the controller. If the issues still persists then you can try cleaning out the trailer connector pins. The next step would be to check the wiring and then replace the brake controller.
view full answer... - Where to Mount Curt TriFlex Brake Controller on a 2016 Toyota 4Runner
- I am going to start with the easy part of your questions if you don't mind! For the Curt brake controller you have the wiring harness needed to plug it into your 2016 Toyota 4Runner is # C51362.
As far as placement I have seen the interior of the 2016 4Runner and like you said there is almost no free space! But it looks like to the right of about where your right knee would be there is a vertical space in the center console that appears to be directly in front of the emergency brake
view full answer... - Difference Between Curt TriFlex and Curt TriFlex NEXT Brake Controllers
- Great question Max!
Yes, the Curt TriFlex NEXT Trailer Brake Controller # C24VV is just an upgraded version of the Curt TriFlex C51140 with the upgrades being a refreshed computer system and the ability to be mounting in any orientation instead of being limited to a 90-degree vertical and 40-degree horizontal like what we see with the older model.
Because of this I highly recommend going with the NEXT version over the original version.
view full answer... - Will Curt TriFlex Brake Controller Allow 2020 Ram 1500 Classic to Operate Brakes on Travel Trailer
- Yes, the Curt TriFlex Trailer Brake Controller # C24VV will work for your 2020 Ram 1500 Classic to operate the brakes on your Northtrail NBH24 travel trailer. You will need the Wiring Adapter # C51458 to plug and play the controller into your factory 7-way wiring.
view full answer... - How to Disconnect the Curt TriFlex C24VV so it can be Recalibrated
- To disconnect the Curt TriFlex # C24VV, you simply need to unplug it. This should be done for 5 to 10 seconds and should get the controller reset.
However, if you hardwired the controller and cannot unplug it, you will need to unhook the power wire from the battery. This will have the same affect as unplugging from a port or wiring pigtail.
view full answer... - Estimated Time to Install a Trailer Brake Controller on a 2014 Chrysler Town and Country
- There are a few things that are going to affect installation time of a brake controller on your 2014 Chrysler Town and Country. If the van already has a 4-Way connector, that will trim down the time a little. Depending on how you want to route the wiring will affect the overall installation time as well. I would say for a novice maybe 3 hours as an educated guesstimate.
To install a brake controller on your van you will first need to have a 4-Way trailer connector, # C56331, if the van
view full answer... - Comparing the Hopkins Agility and Curt TriFlex Trailer Brake Controllers
- The Hopkins Agility Trailer Brake Controller part 47295 and the Curt TriFlex Trailer Brake Controller part # C24VV are both fine options and very similar in their proportional design. That said, I recommend the Curt TriFlex because it's physically smaller (4" long x 3-1/4" wide x 7/8" tall vs. 5" long x 3" wide x 1-1/4" tall) therefore you won't run as high a chance of hitting your knee on it getting in and out, has a built-in plug so you can remove the controller easily when needed without
view full answer... - Recommended Electric Trailer Brake Controller for a 2014 Toyota Tacoma without Much Space
- The Curt Venturer # C74VV and TriFlex # C24VV are two of the smaller brake controllers. The main difference between the two is the TriFlex is a proportional controller so the braking will be smoother and put less wear on the truck and trailer's brakes.
However, a proportional controller needs to be installed within its range of direction. A time delayed, like the Venturer can be installed at any angle. This may be easier since you have limited space in your 2014 Toyota Tacoma. Normally
view full answer... - Will a Curt Triflex Trailer Brake Controller Install On a 2006 Chevrolet Trailblazer?
- Yes, the Curt TriFlex NEXT Trailer Brake Controller # C24VV will work in your 2006 Chevrolet Trailblazer. You will need the Universal Wiring Adapter # C51515 as the wiring for the brake controller is terminated under the dash and there is not a factory connector to plug and play into.
I have linked an installation video we did on a similar Trailblazer in our shop near the bottom of the page. While the Installation was for a Tekonsha Prodigy P2 # 90885 it will still help you identify where
view full answer... - Troubleshooting Curt Triflex Brake Controller With Dashes Displaying
- What is happening with your Curt TriFlex Trailer Brake Controller # C24VV is that you have a poor ground connection most likely. I took a look at the manual for this controller and with your display showing two dashes the issue was either a battery that was not providing enough power - which we know based on the 12 volts you were getting not to be the case - or you had a poor ground, which is the leading cause of all wiring problems. So you need to double and triple check you have a good ground.
view full answer... - Parts Needed To Install Curt Assure Trailer Brake Controller On a 2024 Chevy Silverado 2500
- The Wiring Adapter # C51525 will allow you to connect the Curt Assure Trailer Brake Controller # C49UR on your 2024 Chevrolet Silverado 2500HD.
view full answer... - Curt Brake Controller Wiring Plug for a 2021 Chevy Silverado 1500
- Thanks for reaching out, Alan!
In order to install a Curt brake controller to your 2021 Chevy Silverado 1500 you'll need the Adapter # C51525, yes. This will connect under the dash to that larger gray connector you found.
If you don't already have the brake controller then I really like the Curt TriFlex NEXT Trailer Brake Controller # C24VV as it has a proportional operation so the trailer brakes match the time and intensity of your truck braking.
view full answer... - How Would Brake Controller Install in 2021 Chevy Tahoe
- If that part is available it would be through GM only. But you could also bypass needing a connector and just wire what you have found directly to a brake controller like the Brake EVN part # TK63VR instead. For this controller the black wire is the 12 volt power wire, red is stoplight circuit, blue is brake output, and white is ground.
view full answer... - Where is the Factory Trailer Brake Controller Port On a 2022 Chevrolet Tahoe
- If your 2022 Chevrolet Tahoe does not have the factory tow package then the plug may not be there. If this is the case you would need to hardwire in a brake controller. If your Tahoe does have the tow package then the plug will be under the dash. The plug will often times be taped together with another harness making it not always apparent that it is the plug you are looking for. You may need to do some searching to find the correct plug.
Currently at this time (2/10/2022) the only adapter
view full answer...
Info for these parts were:
Edited by:
Lindsey S
Expert Research:
Jameson C
Installed by:
Kathleen M
Updated by:
Wilson B
Updated by:
Kristina F
Updated by:
Isabelle B
Written by:
Ronnie R
Video by:
Jonathan Y
Test Fit:
Matthew B
At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Product Experts Available Now!
Call 1-800-940-8924
Jenny N.
5/31/2024
Jon, what you will want to do is to take a multi-meter like the Item # PT29ZR and ensure you are getting power to your controller. You should be getting 12 volts on the black power wire and when you hit the manual over ride you will get 12v on the blue brake controller wire. If you are not getting full power you will have a loose connection somewhere and you will want to start at your fuse and work forward until you find it.