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,C51392
Retail:$195.34
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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: C51392
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.
51392 Curt Quick Plug Brake Control Adaptor Harness
California residents: click here
Customer Satisfaction Score:
95% were satisfied with this product
5% of customers were not satisfied
- Defective
- Wrong item was ordered
- Package not accepted
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 - C51392
Average Customer Rating: 4.8 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 beneath your vehicle's dash.by: Michael09/07/2020
The Curt Custom Wiring Adapter for the 2017 Honda Ridgeline worked perfectly for the installation of my new Curt Spectrum Trailer Brake Controller. Thanks etrailer!Thanks Curt!
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: 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: Frank 04/20/2024
Extremely easy to install and small enough to not be in the way. Works great as well….highly recommend.
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: Tim 10/13/2023
Works good, just installed, trailer brakes smooth and as it should.
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: John 03/13/2024
Great fit works as described
by: Ned b03/29/2014
Honda
Just finished the install. It was nice to be assured that I had everything I needed to finish the job before I got started. Honda didn't make it easy.
by: Hugh05/04/2020
2018 Ford Transit Connect
Installed the Curt Triflex in 2018 Honda Ridgeline RTL-E and was completely easy with the C51392 Honda specific wiring adapter that plugged into the Honda pre-wiring just above and left of the emergency foot brake as you look at the pedals. Like how the controller fits nicely in front of the shifter flat on the center console storage tray with a bit of Velcro to hold it and prevent movement in transit and matches the black interior trim well (didn't use the metal bracket that came with it). Have had great luck with Curt products (hitches, adapters, etc.) and this product is very well thought out. Too early to tell about long term use though.
by: Domenico11/29/2023
install is a breeze!
by: John H.06/05/2019
2019 Honda Pilot
This part is listed to fit a 2019 Honda Pilot. I needed one for a 2019 Honda Passport;(basically the same vehicle); however since the Passports just came out in about February no one could tell me if it would work on the Passport. So I took a gamble and ordered this wire. Well I can confirm that this part does work on the 2019 Honda Passport. The hardest part was reaching the plug under the dash and getting this wire to plug into it, all without any room and only being able to get one hand up under dash. Wire made hooking up brake controller a lot easier than direct wiring.
by: Adam 09/30/2023
Hey guys thanks for all the help.
I submitted a couple of questions that were quickly answered and Jon gave me a couple of suggestions that I did wind up choosing. They even came with detailed directions for my paticular truck.
Thanks again for the awesome service and help
by: Harold 12/16/2023
She was great
by: Jonathon 10/19/2019
2019 Honda Pilot
This fit my 2019 Honda Pilot perfect. Plugged right in under the dash. The plug branches out of another wiring harness directly above your OBD plug in. On the left side of dash. You will have to lay down and get your head near the pedals to see it tucked up in there. Very easy install, glad I went with etrailer. Made it simple.
by: John06/12/2017
2013 Honda Pilot
Worked great I installed my brake controller in new truck in no time. On line instructions were great workout perfect.
by: Robert 07/25/2023
Thanks for the video. Worked great
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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?
- Parts Needed to Install Curt TriFlex NEXT Brake Controller on a 2018 Ford F-150
- To install the Curt TriFlex NEXT Trailer Brake Controller # C24VV to your 2018 Ford F-150 I recommend also picking up the Custom Wiring Adapter # C51436 so the installation is a plug and play setup. You'll be able to find the OEM connector on your Ford behind the center console controls (see attached instructions).
If your F-150 came from the factory with a 7-Way connector at the back then you're good to go, otherwise if it came with the 4-Way then you also need the Universal Installation
view full answer... - Trailer Brakes Are Locking Up When Connected To My 2010 Nissan Armada
- There are a couple tests that need to be done to determine if there is a wiring issue on your 2010 Nissan Armada with the Curt TriFlex Trailer Brake Controller # C24VV. With your trailer brakes locking up as soon as the trailer is connected it leads me to believe that the brake switch is sending power when it should not.
The red wire in the Curt Custom Wiring Adapter # C51382 should only see power when the brake pedal is depressed. You can use a Test Light # PTW2992 to test this wire
view full answer... - How To Calibrate the Curt TriFlex Trailer Brake Controller
- I have attached an excerpt from the owner's manual on the Curt TriFlex Trailer Brake Controller part # C24VV which shows the setup process including the calibration.
view full answer... - Wiring Adapter For Curt TriFlex Trailer Brake Controller On a 2022 Hyundai Santa Cruz Tow Package
- Yes, the Curt Custom Wiring Adapter # C77BR will allow you to connect directly to the factory wiring on your 2022 Hyundai Santa Cruz with the factory tow package. The other end will connect to your Curt TriFlex Trailer Brake Controller # C24VV.
view full answer... - Should I Always Have Power On Blue Wire After Installing Curt TriFlex Trailer Brake Controller
- The only time you want to see power on the blue brake wire from the Curt Triflex Brake Controller part # C24VV is when the brake pedal depressed in the vehicle or the brake controller manual override is activated. If the blue wire has a constant 12V then it is an indication that there is an issue with the wiring. This could lead to your trailer brakes locking up, getting hot or not working at all once you hook your trailer up.
I was able to find your account and it looks like you used
view full answer... - Power Level Display on Curt Triflex Brake Controller # C24VV Varies When Going Over Road Bumps
- You do not indicate whether the brakes seem to be engaging properly when you are going over these small road surface irregularities. It could be that just the display itself is at fault, reacting to these bumps, at that the controller is still otherwise operating properly.
It may also be simply that your truck-to-trailer wiring is briefly losing its connection; this would cause the controller to see a changing electrical resistance and hence show a different output. Check to make sure
view full answer... - Curt TriFlex Brake Controller Output Numbers Jump when Going Over Bumpy Roads
- The Curt Triflex # C24VV does not have a pendulum. That is an older technology that is not used that much any more. But it still could have been caused by the truck bouncing on the road if it was severe enough.
It could also have been an electrical anomaly caused by flex between the truck and trailer connectors or the wiring on the brake magnets moving more than normal from the bouncy road conditions. Make sure the truck and trailer side connectors are clean and free of corrosion inside
view full answer... - Installing Curt Venturer Brake Controller on 2002 GMC Envoy w/ Factory Tow Package
- You can certainly move the brake controller to your son's 2002 Envoy.
Unlike your Ram, the Envoy doesn't have a connector under the dash. There are bare tow package wires that you'd simply wire the brake controller to. I'd recommend using a Curt universal quick disconnect, part # C51515 and wiring it directly to the tow package wiring, which would allow you to easily remove the controller and swap it back and forth between the vehicles if you wish. The wires would connect color for
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... - How Can I Be Sure My Curt Triflex Brake Controller Is Working Worrectly
- Hello Dan, I can definitely help with this. It is completely normal for the Curt TriFlex brake Controller # C24VV to show the current gain setting when the brakes are applied, or when the manual override is pressed. It sounds like you have the gain currently set at 9.7 which is why you are seeing this number flash on the display. So, it sounds like it is working correctly and there is no problem with the controller.
I suggest trying to turn the gain down. This way you can be 100% sure
view full answer... - Recommended Brake Controller And 7-Way Connector For A 2016 Toyota Highlander
- The first item you will need is the brake controller and harness. I recommend the Curt TriFlex Brake Controller # C24VV with Adapter # C51515. The Curt Brake Controller features an integrated safeguard protection with digital communication display. I am currently not aware of a factory harness under the drivers side kick panel for trailer wiring on your vehicle. The controller will have to be hardwired in order to communicate with the 7-way adapter.
To convert the 4-pin connector to
view full answer... - Troubleshooting Curt Triflex Brake Controller that Brake Output Jumps Around
- The Curt Triflex brake controller # C24VV that you referenced is notoriously buggy. Try unplugging it for a few seconds and replugging it back it to see if resetting it would allow it to function again.
If that does not work I'd strongly recommend replacing it with a more reliable brake controller like the Prodigy P3 part # 90195.
view full answer... - Troubleshooting Curt Brake Controller that Rests When Brakes are Released
- So the controller resets every time you apply and release the brakes? You might check to make sure you made all the connections correctly when you wired it to the correct functions. Most likely it sounds like there's an issue with the red and black wires of the controller. The black wire of the controller needs to run to a power source that is hot all the time and the red wire needs to run to the stoplight circuit. Now all of that said the TriFlex is known to be prone to internal problems
view full answer... - Parts Needed to Install Curt Triflex Brake Controller on 2013 Nissan Frontier W/O Trailer Wiring
- The only change you would want to make is that instead of the Universal Wiring Adapter for Curt Brake controllers # C51515 you would have wanted to get the Curt Custom Wiring Adapter # C51382.
This will make the installation of the Curt Triflex Brake Controller part # C24VV simple. All you would have to do is plug one end of the connector into the back of the brake controller and the other end to the harness that is located underneath the dash, to the left of the steering column, and
view full answer... - Trailer Brakes On Camper are Humming
- What you are hearing is the brake magnet being activated. If this is happening immediately upon plugging in the trailer, while the brakes on the truck are NOT being applied, it would indicate that something is wired incorrectly.
Does the truck have a 6-way or 6 pin trailer connector? If so, either the connector on the vehicle or the trailer would need to be rewired. There are two accepted methods of wiring a 6-way connector. One method uses the center pin to carry the brake controller
view full answer... - Recommended Wiring Harness For A Curt TriFlex Trailer Brake Controller In A 2003 Chevy Silverado
- The part #15085418 you referenced comes back as an OEM GM wiring harness, which you would have to go to a GM dealership to purchase.
If you're just needing a wiring harness for the Curt TriFlex Trailer Brake Controller - 1 to 4 Axles - Proportional # C24VV that you linked to so you can plug it into your 2003 Chevy Silverado with factory tow package then you can use the Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In # C51352. This wiring harness will plug into
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... - How Many Wires Under Hood Need Attached On 2008 Chevy Silverado for Brake Controller
- The Curt TriFlex Trailer Brake Controller part # C24VV is an excellent option for a 2008 Chevrolet Silverado when used with the Universal Wiring Adapter for Curt Trailer Brake Controllers part # C51515. The wires under the dash are already ran and labeled for you.
Once the wires under the dash are hooked up, all you will need to do is make one connection under the hood in the engine bay. This connection is a red wire to the right of the fuse box which needs to be attached to the M6 stud
view full answer... - How to Rese Curt Triflex Brake Controller C24VV
- To reset your Curt Triflex part # C24VV all you need to do is unplug it temporarily and then plug it back in. Once you do that the controller will have reset itself.
view full answer... - Curt Trailer Brake Controller Displays Gibberish when Brake Pedal is Pressed
- The brake controller may be trying to tell you something. Take a look at the picture I have included and if what it is displaying is any of these then it is trying to indicate there is a problem.
It also could be variable voltage on the input (red) wire or the sensors inside are unsure just how much braking is needed. Make sure the controller is not tilted or turned to one side. You also may need to adjust the sensitivity some (see instructions link).
You will also want to make sure
view full answer... - Installing A Curt Spectrum Trail Brake Controller In A 2020 Honda Passport
- Hi Louis,
Are you not able to find the factory connector to plug in the Curt Custom Wiring Adapter # C51392? If so I've attached a video of another brake controller wire harness that plugs into the same connector on a 2019 Passport to help you find the connector. You can skip past the intro to minute mark 4:49 to see where the connector sits.
If you're having a different issue then let me know and I'd be happy to help so you can get your Curt Spectrum Trailer Brake Controller # C51170
view full answer... - Correct Curt Brake Controller Adapter Harness for 2023 Honda Pilot
- Correct, the Curt Custom Wiring Adapter for Trailer Brake Controllers part # C51392 is a fit for all models of a 2023 Honda Pilot. It will allow you to use a trailer brake controller like the Curt Assure Trailer Brake Controller part # C49UR which is what I recommend. This is an excellent setup that allows for towing a trailer with brakes without any splicing required. The proportional design of the controller will provide a smooth braking feel and the adjustable display will ensure you
view full answer... - Install Harness for Curt Assure Brake Controller for 2021 Honda Ridgeline
- To install the Curt Assure brake controller part # C49UR in your 2021 Honda Ridgeline the correct install harness is the part # C51392. The other harness was designed for other vehicles and not yours.
view full answer...
Info for these parts were:
Edited by:
Leah B
Written by:
Lindsey S
Expert Research:
Jameson C
Updated by:
Wilson B
Updated by:
Kristina F
Updated by:
Isabelle B
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Michael
9/8/2021
The Curt Spectrum Trailer Brake Controller has been working flawlessly. I am pleased that the custom harness made the install so simple.