Curt Assure Trailer Brake Controller with Adjustable Screen - 1 to 4 Axles - Proportional
Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In

Curt Assure Trailer Brake Controller with Adjustable Screen - 1 to 4 Axles - Proportional
part number: C49UR

This sleek, low-profile proportional brake controller will fit easily into your cab. A large, high-quality OLED screen with full-text readouts is easy to see. Includes 9 sensitivity settings 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
• High-quality, 1-1/2" tall, OLED screen displays full-text readouts and tilts so it's easy to see
• Large, tactile buttons keep your settings within easy reach
  • 9 Levels of boost let you adjust initial braking power and aggressiveness for smooth, safe braking
• Pressure-sensitive manual override button lets you control trailer sway or stop in emergencies
• Dynamic power adjustment intuitively gives you the braking output you need
  • Automatically increases power for going downhill and decreases for 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 power conservation mode after 30 minutes of inactivity
  • Keeps trailer brakes from overheating by reducing power output during prolonged stops
  • Defends brake controller and trailer breakaway systems against shorts
  • Prevents positive and negative power reversal with built-in polarity protection
• Compatible with ABS brakes, cruise control, low-voltage wiring, multiplex wiring, and PWM systems
• Sleek, low-profile design makes it easy to tuck the brake controller out of your way
  • 90-Degree vertical mounting range
  • Mounting bracket and hardware included
  • Plug-in, vehicle-specific brake control adapter 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: 3-7/8" long x 3-1/2" wide x 3/4" tall
  • Height of OLED display: 1-1/2"
• Mounting range:
  • 90 Degrees vertically
  • 20 Degrees horizontally
• Limited lifetime warranty

Adjustable, Easy to Read OLED Display

The high-quality OLED display on this brake controller makes the screen easy to read at a glance. The text is large and you can tilt the screen to the angle that makes it easy for you to see. Instead of displaying codes that you have to look up, this display shows full-text descriptions of errors so you can quickly address any problems that come up.

Built-In Controls for Adjustable Power

Braking Output: Braking output 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. Use the + and - buttons to set the output. You want to set the braking output as high as you can without locking up the brakes. Once you've set up the brake controller the first time, you shouldn't need to adjust this setting unless the trailer load changes, you switch trailers, or road conditions change. The OLED display will show the current output setting being used.

Sensitivity: Once you have the output set, you can fine-tune the power by adjusting the sensitivity of the internal sensor. This controls the aggressiveness of your trailer's braking, meaning how quickly the brakes reach the set output level. You can adjust this when you're towing heavy loads and you need more umph to bring your trailer to a stop. Your tow vehicle doesn't need that much power to brake in time, but your heavy trailer does. The sensitivity setting gets the braking power to your trailer brakes faster and with more intensity so that it doesn't push your tow vehicle forward.

There are 9 sensitivity levels (boost levels), with 1 being the least sensitive. At level 9, the sensitivity of the internal sensor is as high as it can go. Press both buttons at once to switch into the sensitivity mode and adjust to the level you need for smooth, safe braking. When you change the setting, the display on the Assure will flash the level before reverting back to showing the power output.

Manual Control: The manual override button on the Curt Assure is pressure sensitive for precise braking power. When you press the button, the trailer's brakes will be activated with the same amount of force, without activating the brakes on your tow vehicle. This is great for stopping sway or controlling your trailer's momentum in emergencies. The braking intensity will be indicated on the OLED display when you press this button.

Safety Features

The Assure 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 controller will automatically go into power-saving mode when not in use. This feature will turn on after 30 minutes of inactivity and turn off again the moment you press the brake pedal.

Another great way that the Assure protects the longevity of your setup is a hold feature that saves wear on your brakes. When you're waiting at a red light, you don't need your trailer brakes on at full power. The longer you sit there, the more they will overheat. But with the Assure, any time your tow vehicle and trailer are at a standstill for a prolonged period of time, the controller will reduce the power output to the brakes. This will keep your trailer in place while saving your brakes.

Automatic Leveling and Simple Installation

The self-leveling feature of the Assure ensures that the brake controller continues to function even as you drive up steep hills or through the mountains. Simply mount it in your cab at a vertical angle within 90 degrees, and the controller will level itself automatically. This makes the installation that much easier. But keep in mind that the Assure must be horizontally level and parallel with the direction of travel to work correctly.

Installation is a snap. 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.

Installation Accessories

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.

Note: If a custom brake control wiring adapter is not available for your vehicle, either a 20-amp or 30-amp circuit breaker (sold separately) may be required for installation.

Proportional Braking

The Curt Assure 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 Assure uses an internal inertia sensor to detect 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.

51160 Curt Assure Proportional Trailer Brake Control with Dynamic Screen

Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In
part number: C51522

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.

51522 Curt Quick Plug Brake Control Adaptor Harness

California residents: click here

WARNING: This product can expose you to chemicals including Di(2-ethylhexyl) phthalate, which is known to the State of California to cause cancer, and Di-n-butyl phthalate, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov

Customer Satisfaction Score:

92% were satisfied with this product

8% of customers were not satisfied

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Customer Reviews

Curt Assure Trailer Brake Controller with Adjustable Screen - 1 to 4 Axles - Proportional - C49UR

Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In - C51522

Average Customer Rating:  4.6 out of 5 stars   (61 Customer Reviews)

Order: RelevanceNewestRating - High to LowRating - Low to High This sleek, low-profile proportional brake controller will fit easily into your cab. A large, high-quality OLED screen with full-text readouts is easy to see. Includes 9 sensitivity settings 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: Thomas03/07/2024

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.1743630

by: Robert 03/24/2024

With the adapter kit, installation was easy. Controller is very responsive when towing.1753292

by: Chad Mc.04/24/2022

The resources at etrailer.com made my purchase easy. By having specific truck lookup ,correct wite adapter and specific product videos. Looking forward to my first trip with curt assure brake controller.1289844

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by: Micah07/18/2022

2006 Dodge Ram. Easy install. Plug it in and tie up the wires. I put a wire protector sleeve to cover the wires coming out of the controller.1332024

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by: Barry12/02/2022

Audi

This brake controller works perfectly for my 2014 Audi Q7! The instructions were easy to follow thereby making the installation a straightforward process. The hardest part was deciding where to install the dial. The dial has a solid and deliberate feel when turning and numerous options for fine tuning.1477599

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by: William03/30/2020

This made for an easy plug and play installation—and even included instructions for removal is the lower dash trim panel in my Audi. 772425

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by: Michele04/02/2022

VERY easy install. As mentioned in other reviews the hardest part is finding the factory plug in for a 2017 Tacoma. Toyota tucked it way in the back behind a wire bundle. Picture attached for reference.1280885

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by: Todd03/13/2024

2019 Volkswagen Atlas

The product was exactly what was required for the job. Was disappointed in shipping since I paid extra for expedited shipping and it arrived a day later than expected. I could have got it in the same time frame and saved $XX.00.1746744

by: Richard08/24/2023

Good prices and selection but the shipping was pretty slow. Almost had to go buy a cheap brake controller to get my towing job done. I'd buy from etrailer again without hesitation assuming I didn't need it right away.1653844

by: John 06/13/2023

Great customer service
Quality parts with excellent communication1599983

by: Bill09/12/2022

The directions on this item are horrible. I finally figured it out and was able to install it onto my Ram 1500, but only after spending hours trying to make everything fit right. If you're looking for a hitch setup to pull a trailer long distances, I would advise you to look at other options. This will work for my short trips with my half-ton pickup, but I would not want to pull anything more than 50 miles with this setup.1427857

by: Earnest 09/15/2023

Qaulity product and easy installation. Fast shipping.1667668

by: Ronnie07/11/2022

Controller worked great. Stops smoothly and properly. The only problem is when I disconnect the trailer the display continues to say there’s a problem and won’t stop until I unplug it. Called technical for help and he said there’s a short somewhere but I haven’t found any short or cause.1325321

by: Michael 09/22/2022

Noah A did a fantastic job of making sure I had the right product and referred me to their video library for installation instructions. Absolutely a fantastic representative of this company 5 out of 5 stars for sure. Good follow up as well!1420142

by: Terry Ann10/02/2022

The product worked great, but I am annoyed because etrailer wouldn't take it back even though I hadn't used it.1434039

by: Henry 05/01/2023

Awesome company. Install was simple and delivery was as fast as I ever had. Highly recommended them.1568414

by: Richard 04/20/2021

Customer service is awesome needed this to pickup my trailer tomarrow they were able to get it to me next day. Also ygis trailer brake literally plug n play on 2003 chevy suburban.1016851

by: Holly05/14/2022

Much smoother braking than my previous controller that the RV dealer put in. Curt has excellent customer service.1298030

by: Mike03/12/2021

Install video and instructions on my 2007 Toyota Tacoma where very helpful, thank you for the kit!981872

by: Robert 06/27/2022

easy to install, but needed correct cable for tundra works just fine with large trailer1316865

by: John 09/26/2023

Fast Shipping! Works great!! 1673539

by: Bryant 06/27/2021

Brake controller came in less than 48 hours! Looks great, going to hook it up today! Thanks Etrailer1077097

by: Leroy 08/25/2023

Good product 1654896

by: Jeff 12/15/2022

Great company to work with! 1485369

by: Bryan 06/15/2021

Easy to install in my 2021 Toyota Tacoma. Make sure to order separate connector. The white connection is behind the foot rest left of the brake. Easy to find, installed in about 20 minutes.1066102

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

• Parts Needed To Install Curt Assure Trailer Brake Controller In 2007 Chevy Silverado 2500HD Classic
  
• I have another option for you, but your 2007 Chevrolet Silverado 2500HD Classic has a factory trailer brake controller port so there is no need to cut any wires. To replace your current controller with the Curt Assure Trailer Brake Controller with Dynamic Screen - 1 to 4 Axles - Proportional # C49UR you will just need the # C51352 which will plug into the factory trailer brake controller port underneath the dash of your truck. I included video reviews for both of the products mentioned
  view full answer...


• Parts Needed To Install Curt Assure C49UR In 2008 Nissan Pathfinder Without Factory 7-Way
  
• Actually your 2008 Nissan Pathfinder SE does have a factory trailer brake controller port underneath the dash even though it did not come with a factory 7-way connector. To install the Curt Assure Trailer Brake Controller # C49UR you were looking at you will just need to use the Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In # C51382. I included videos for both of the products mentioned for you to take a look at.
  view full answer...


• Install Harness for Curt Assure Brake Controller in 2007 Dodge Ram 2500
  
• To install the Curt Assure brake controller part # C49UR in your 2007 Dodge Ram 2500 all you need is the correct install harness # C51332 and you'd be set. This plugs into the brake controller port you have under your dash.
  view full answer...


• Upgrading The Factory Brake Controller On 2017 Ram 1500
  
• That is correct. You will just need Curt Assure Trailer Brake Controller with Adjustable Screen # C49UR along with Curt Custom Wiring Adapter # C51458 since you already have the factory brake controller hookup under the dash. I attached a short demonstration video.
  view full answer...


• Replacing Tekonsha Brake Controller For a Curt Brake Controller in 2009 Dodge Ram 3500
  
• The Curt Assure Trailer Brake Controller with Dynamic Screen # C49UR will require a Curt Custom Wiring Adapter # C51332 to connect to your 2009 Dodge Ram 3500 that has a factory plug in connector. Another option is to use a Curt Wiring Adapter for Cequent Trailer Brake Controller Wiring Harnesses # C51520 to adapt the Tekonsha harness to plug into the curt. This will work best if your harness is difficult to get to or your wiring is hardwired and you do not want to have to remake the
  view full answer...


• Wiring Harness for 2021 Ram 1500 for Curt Assure Trailer Brake Controller
  
• We do have the wiring harness you are looking for that will work with your 2021 Ram 1500 and the Curt Assure Trailer Brake Controller # C49UR. The correct part is the Curt Custom Wiring Adapter for Trailer Brake Controllers # C51458.
  view full answer...


• Will Curt Assure Brake Controller Be Smoother than Escort Brake Controller
  
• The Curt Assure brake controller part # C49UR when properly set up will be incredibly smooth unlike what you have now. This controller has an inertia sensor that can tell how hard you are applying the vehicle brakes and applies a proportionate amount of braking pressure on the trailer brakes. To install it in your 2012 Toyota Tacoma you'd just need the install harness part # C51362 which plugs in under the dash.
  view full answer...


• Install Harness for Curt Brake Controller Installed on 2014 Toyota Tundra
  
• To install a Curt brake controller like the Assure part # C49UR in your 2014 Toyota Tundra the correct install harness would be the part # C51362. I checked with them and was not able to find a different harness they recommended.
  view full answer...


• Can the Curt Assure Trailer Brake Controller Be Mounted Vertically
  
• The Curt Assure Trailer Brake Controller part # C49UR must be mounted in a certain orientation in order for the inertia sensor to work properly. I have attached a photo below with the mounting orientation required which comes directly from the install instructions. It cannot be mounted vertically as you can see.
  view full answer...


• Plug-In Wiring Harness For Curt Assure Brake Controller in 2021 Ford F-250 w/ Factory 7-Way
  
• There is indeed a plug-in wiring harness for your 2021 Ford F-250 with the factory 7-way that will allow you to use the Assure brake controller; the correct parts for your truck are the following: - Curt Assure Trailer Brake Controller # C49UR - Curt Custom Wiring Adapter for Trailer Brake Controllers # C51436 This is a really nice choice for a brake controller for your F-250 because it it has a bright, easy to see OLED screen, continual diagnostic checks with safeguards to prevent
  view full answer...


• Recommended Trailer Brake Controller to Replace Hard Wired Controller On a 1997 Dodge Ram 2500
  
• The Curt Assure Trailer Brake Controller # C49UR will require the Universal Wiring Harness # C51515 to be hardwired in place of your current brake controller on your 1997 Dodge Ram 2500. I recommend the Tekonsha Prodigy P3 Trailer Brake Controller # 90195 as it will come with the wiring harness needed to complete the installation. This controller is proportional like the Curt Assure and features an easy to read screen. Since you will only use it on occasion you can easily remove the
  view full answer...


• Quick Connect Brake Control Harness for 2020 Jeep Wrangler JL
  
• Curt doesn't offer a plug-and-play harness for the 2020 Jeep Wrangler with the tow package, but I DO have a solution for you. You'll need to use the Tekonsha version of the harness, part # 3073-P. Cut off the black connector on the # 3073-P harness, and cut off the black connector on the Curt # C49UR Assure brake controller, and wire the controller to the harness, color for color. You'll still retain the quick disconnect function. The # 3073-P harness plugs into the factory connector
  view full answer...


• Parts Needed To Install A Curt Assure Trailer Brake Controller On a 2012 Jeep Wrangler No Tow Wires
  
• To install the Curt Assure Trailer Brake Controller # C49UR on your 2012 Jeep Wrangler you will need some additional parts. If you have absolutely no trailer wiring you will need everything I am about to list, you will be able to disregard any parts that you already have. I'll start with the trailer connector. A brake controller requires a 7-way blade connector, for that you will need our Universal Installation Kit # ETBC7. This kit will include the 7-way connector wiring, relays, and
  view full answer...


• Brake Controller Port For 2017 Ford F-350 to Install Curt Brake Controller
  
• To install the Curt Assure Brake Controller # C49UR on your 2017 Ford F-350, you can find the brake controller port behind the dash to the right of the steering wheel. The correct adapter for your F-350 is the Curt Custom Wiring Adapter for Trailer Brake Controllers # C51436.
  view full answer...


• Brake Controller Installation on 2001 Ford E350 Van
  
• Brake controllers like the # C49UR Curt Assure aren't a vehicle-specific item. You can install a brake controller on just about any vehicle. What the installation will involve will depend on whether your E350 is equipped with a trailer connector and what type it is. If you have the factory 7-way trailer connector, it'll be a plug-and-play installation using the # C51322 brake controller harness. The harness plugs in to the connector under the dash near the e-brake pedal (see provided
  view full answer...


• Best Brake Controller for a 2006 Dodge Ram 2500
  
• The Curt Assure Trailer Brake Controller with Dynamic Screen item # C49UR, you were looking at, would be a great brake controller for your 2006 Dodge Ram 2500. It is a proportional brake controller designed for use with electric or electric-over-hydraulic trailer brakes. If your Dodge Ram came with a 7-way connector or a 4-way connector then you will want the Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In item # C51332. This adapter plugs into a port behind your
  view full answer...


• Parts Needed to Install Curt Assure Brake Controller on 2005 Toyota Sequoia w/ Tow Package
  
• For your 2005 Toyota Sequoia with the factory tow package you just need the controller and wiring adapter: - Curt Assure Trailer Brake Controller # C49UR - Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In # C51362
  view full answer...


• Comparing With Or Without Tow Package On A 2017 Volkswagen Touareg
  
• I can help point you in the right direction for sure. The "with or without tow package" will determine what plug or "pigtail" comes with the brake controller. On the 2017 Volkswagen Touareg, vehicles with the factory tow package will have a 7 way trailer plug on the back, and will be equipped with a factory brake control port under the dash. If you do have the tow package you can use the plug and play pigtail # C51522 to easily install the Curt Assure # C49UR. If you do not have the
  view full answer...


• Troubleshooting No Power to Curt Assure Brake Controller Connected to 2021 Jayco Motorhome
  
• To troubleshoot the Curt Assure Brake Controller # C49UR and Wiring Harness # C51432 on your 2021 Ford E-450 I recommend checking the pin on your vehicle-side connector that matches with the pin on the wiring adapter with the black wire, as this is the color wire that carriers the 12V power from the battery. If the pin on your vehicle-side connector doesn't have 12V power then that means something on your vehicle wiring is bad, but if you see 12V power there then that means the wiring
  view full answer...


• Parts Needed to Install Curt C49UR Assure Brake Controller on 2021 Chevy Silverado
  
• To install the # C49UR Curt Assure brake controller in a 2021 Chevy Silverado, in addition to the controller you'll also need a # C51525 brake controller wiring harness. The harness plugs in to the connector located under the dash just left of the steering column next to the e-brake pedal as shown in the provided photo. I've linked to a demonstration video showing how the brake controller works.
  view full answer...


• Plug-In Harness to Install Tekonsha Brake Controller on 2017 Audi Q5
  
• You are correct that Tekonsha does not currently have a plug-in wiring harness available for your 2017 Audi Q5 but you're also right that you can simply cut off the brake controller end of the Curt # C51522 and hardwire it to the pigtail on your Tekonsha Prodigy P2 # 90885 for installation. You will then still be able to use the vehicle-side plug to connect to the factory port behind the dash of your Audi Q5. After cutting off the controller-side plug on the harness the wires will splice
  view full answer...


• Easy to Install Brake Controller for 2014 Audi Q7
  
• I have a really easy to install brake controller for your 2014 Audi Q7 that works great and is super convenient but the only way to install a Redarc Tow Pro part # RED44FR is going to be by hardwiring the install. Instead check out the Echo Mobile part # C51180. Basically this just plugs into an active 7-way and once you sync it to your phone it's ready to go. This brake controller is proportional which means it senses the amount of deceleration your tow vehicle is applying and applies
  view full answer...


• Brake Controller For 2009 Volkswagen Touareg With Factory Tow Package
  
• You will need a brake controller for your Forest River travel trailer with electric brakes and for your 2009 Volkswagen Touareg with the factory tow package, there is a plug-in option available from Curt: - Curt Assure Trailer Brake Controller with Dynamic Screen # C49UR - Curt Custom Wiring Adapter for Trailer Brake Controllers # C51522 The Assure # C49UR will give your travel trailer smooth braking proportional to that of your truck so you have a more comfortable, safe towing
  view full answer...


• Install Harness for Redarc Tow Pro Elite Brake Controller 2012 Volkswagen Touareg
  
• The recommended install harness for the Redarc Tow Pro Elite part # RED44FR to install in your 2012 Volkswagen Touareg is the Curt # C51522 which would match color for color when you wire it to the Redarc controller. So yes, you'd just need to match the colors and you'd be good.
  view full answer...


• Plug-In Brake Controller Adapter for a 2018 Audi Q5
  
• I do have a really great alternative brake controller solution for your 2018 Audi Q5 but none of the top brake controller manufactures offers a plug-in brake controller adapter harness like the Curt Custom Wiring Adapter for Trailer Brake Controllers part # C51522 for this vehicle yet. Therefore, you have two options which are to hardwire your own harness in or use a wireless brake controller. If you wish to hardwire your own harness in then you will need to cut the factory plug off the
  view full answer...