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,C51432
Retail:$191.99
Our Price: $138.20
You Save: $53.79
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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: 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:
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 - C51432
Average Customer Rating: 4.7 out of 5 stars (84 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 behind 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: 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.
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: 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: 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: 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: 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: Bill 03/13/2024
Perfect communication and quick deliver y!
by: Tim 10/13/2023
Works good, just installed, trailer brakes smooth and as it should.
by: John 03/13/2024
Great fit works as described
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: Domenico11/29/2023
install is a breeze!
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Show More Reviews Ask the Experts about this Trailer Brake Controller
Do you have a question about this Trailer Brake Controller?
- Curt Triflex # C24VV Doesnt Send 12V Power when Brake Pedal is Pressed
- The Curt TriFlex # C24VV is a proportional brake controller with an internal sensor to help it know how much braking force to apply to your trailer. Since you are testing the 7-Way while sitting still in your 2008 Toyota Tundra the controller senses that little-to-no braking is needed to "stop" the trailer.
If you are trying to adjust the brake controller for your trailer brakes then I recommend following the instructions which are linked to this page for you.
view full answer... - Should Curt TriFlex Brake Controller Cause Shaking During Stopping
- A brake controller should have no affect on the way the truck brakes when a trailer isn't connected. I'd recommend disconnecting it though right now to see if somehow the wiring is causing an issue. If it is the wiring it'll be the red wire of the controller being connected to the wrong circuit. It needs to be on a circuit that only sees voltage when the brakes are applied.
It almost sounds like you have warped brake rotors though as that's typically what causes a vehicle to shake or
view full answer... - Finding The Correct Brake Switch Wire For Adding Brake Controller on 1990 GMC 1500 Pickup
- The 1994 Chevrolet 1500 pickup is the closest vehicle we have installed a brake controller on in our shop to your 1990 GMC 1500. When we installed the Curt Triflex # C24VV with the Adapter # C51515 and Install Kit # ETBC7 as seen in the video linked below we found the yellow wire form the brake switch as the wire for connecting to the red wire on the brake controller. While I can't say for sure this is going to be the exact same on your GMC it should help you confirm the correct wire with
view full answer... - Troubleshooting Curt TriFlex Trailer Brake Controller Showing Red Dot and Number without Trailer
- If the red dot on your Curt TriFlex Trailer Brake Controller # C24VV remains on without a trailer connected, this can be an indication that the red wire from the controller is connected to the wrong side of the stoplight switch on your vehicle. I recommend verifying that the red wire is connected to the cold side of the stop light switch, which is the wire that ONLY receives power with the brake pedal depressed, and no power with any other function. You can use a circuit tester like #
view full answer... - Install Harness for Curt Triflex for 2019 Honda Pilot with Factory 7-Way
- Since you are having a factory 7-way installed on your 2019 Honda Pilot all you need to install the Curt TriFlex part # C24VV is the install harness part # C51392 since you'll have all of the factory wiring needed to install.
view full answer... - Troubleshooting 2 Red Line On Curt TriFlex Trailer Brake Controller # C24VV
- The 2 red lines on the Curt TriFlex Trailer Brake Controller # C24VV indicates a power or ground wire connection issue. You will want to check the connectors to ensure they haven't loosened up or are sliding out of the connector. You can also connect the controller directly to a good 12 volt battery to ensure the controller itself is not faulty. Please let me know what vehicle and any adapters you may also have.
view full answer... - Is there a Brake Controller Wiring Harness for a 2008 Mercedes GL550
- There isn't an aftermarket brake controller wiring harness that will fit your 2008 Mercedes GL550, so you have a couple of options. First you can see if there is an adapter from a Mercedes dealer with one end that plugs into the port under the dash and the other end with just wires. Then you could wire the controller to that adapter harness.
The other option is to determine the functions of the pins in that port using a circuit tester such as # PTW2993 or a meter if you have one. One
view full answer... - Display Flashes After Installing Curt TriFlex Brake Controller on a 2003 Chevy Express Van
- On the Curt TriFlex brake controller # C24VV the display will flash when in adjustment mode. The brake controller will always have power to it, even when the vehicle is turned off, but will go to sleep after several minutes of inactivity. If you adjust the controller and still get a flashing display then you may need to unplug the controller, wait a few minutes, and plug it back in.
It is also a good idea to make sure the vehicle trailer connector is clean and free of corrosion inside,
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... - 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... - How to Reset Curt Triflex Brake Controller that Brakes That Brakes too Long and Has Random Message
- The Curt Triflex part # C24VV is known to have odd issues like what you described and the solution is to unplug it for a few seconds to reset it and then plug it back in. This resets the controller which will clear out the internal issue yours is having.
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... - Troubleshooting Two Dashes on Curt TriFlex Brake Controller
- The two dashes you are seeing on your Curt TriFlex # C24VV brake controller indicates a wiring issue, either with the power or ground wires.
Take a look at the wiring going from the brake controller to your battery - both the black wire going to the positive post and the white ground going to the negative post and ensure there are no damaged wires or issues with your circuit breakers and this should remedy the issue.
view full answer... - Troubleshooting Curt TriFlex Trailer Brake Controller C24VV That Displays U Error Code
- Thank you for the photo of the display on your Curt TriFlex trailer brake controller # C24VV that shows what looks like a letter U. There is no such actual letter U among the various operating and troubleshooting codes so I think potentially what may have happened is that part of the display has failed, and it is no longer showing the entire code.
The nearest codes to what your unit shows are L.1., which indicates the unit's selected sensitivity level; and L.b., which indicates that
view full answer... - Harness Needed To Install Curt Brake Controller On a 2015 Chevy Silverado 1500
- In order to install a Curt TriFlex Trailer Brake Controller part # C24VV on a 2015 Chevrolet Silverado 1500 you'll need the Curt Custom Wiring Adapter for Trailer Brake Controllers part # C51451. It will indeed plug into a port under the dash making for a no-splice install.
view full answer... - Choosing Proportional or Time Delayed Brake Controller for Truck with Manual Transmission
- The Curt TriFlex Trailer Brake Controller # C24VV and Universal Wiring Adapter # C51515 is an excellent choice for your 1986 Ford Ranger with a manual transmission.
Proportional brake controllers like the Curt TriFlex have an internal inertia sensor which responds to the deceleration of your tow vehicle. Letting your foot off the gas pedal for a few seconds to shift gears does not create enough of a deceleration to send the signal to engage the brakes on the trailer. The controller
view full answer... - Adapter Needed to Install the TriFlex NEXT in a 2016 Toyota Sequoia with Factory 7-Way
- For your 2016 Toyota Sequoia with the factory 7-Way installed you will need the Wiring Adapter # C51362 for the TriFlex NEXT # C24VV.
view full answer... - Curt Brake Controller Flashes Numbers when Braking and Not Towing with a 2011 Ram 1500
- Curt brake controllers such as # C24VV can be very sensitive and it is not uncommon to get something on the display with no trailer attached. But what I recommend is to make sure the 7-Way connector at the back of the truck is clean and free of corrosion and moisture inside where the wires attach and outside on the pins. Corrosion or moisture can cause a short and cause the brake controller to do strange things.
view full answer... - What Does an OL Error on the Curt Triflex Brake Controller Mean?
- The "OL" error code on the Curt Triflex # C24VV means there is a short in the blue wire output circuit or trailer plug. Basically all you need to do is find the short and repair it. With the noise you are getting at the hitch, I can almost guarantee the short is at or near the 7 Way plug near your hitch.
view full answer... - Locating Cold Side of Stop Light Switch on 2013 Chevrolet Equinox
- On your 2013 Chevy Equinox there is only one cold stop light switch wire going to the body control module (BCM). From there, it goes to both the center high mounted stop light (CHMSL) and the tail lights.
From what I found, the wire you are looking for is typically a yellow wire above the brake pedal, so I would start by testing that wire with a circuit tester like # PTW2979. It should only be hot when the brake pedal is applied. This is connected to the red wire on 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... - 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... - 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... - 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... - 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... - 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...
Info for these parts were:
Edited by:
Leah B
Expert Research:
Mike L
Expert Research:
Michael H
Written by:
Lindsey S
Updated by:
Wilson B
Updated by:
Kristina F
Updated by:
Isabelle B
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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.