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  1. Trailer Brake Controller
  2. Redarc
  3. Electric
  4. Electric over Hydraulic
  5. Proportional Controller
  6. Up to 2 Axles
Redarc Tow-Pro Liberty Brake Controller - Dash Knob - 1 to 2 Axles - Proportional

Redarc Tow-Pro Liberty Brake Controller - Dash Knob - 1 to 2 Axles - Proportional

Item # RED24FR
Our Price: $159.00
You Save: $15.90
Trailer Brake Controller

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Mount the control knob of this proportional brake controller on your dash for a factory look, and install the main unit out of sight behind the dash. Control your braking power with the turn of a dial, with manual override right at your fingertips. Great Prices for the best trailer brake controller from Redarc. Redarc Tow-Pro Liberty Brake Controller - Dash Knob - 1 to 2 Axles - Proportional part number RED24FR can be ordered online at or call 1-800-940-8924 for expert service.
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Redarc Trailer Brake Controller - RED24FR

  • Electric
  • Electric over Hydraulic
  • Proportional Controller
  • Up to 2 Axles
  • Redarc
  • Indicator Lights
  • Hidden
  • Dash-Mounted Knob
  • Automatic Leveling

Mount the control knob of this proportional brake controller on your dash for a factory look, and install the main unit out of sight behind the dash. Control your braking power with the turn of a dial, with manual override right at your fingertips.


  • Brake controller activates trailer brakes in proportion to your vehicle's braking
    • Automatically adjusts trailer's braking based on deceleration of tow vehicle
  • Dash-mounted knob keeps your vehicle interior looking sleek while giving you easy access to the brake controller
    • Lets you adjust braking power with the turn of a dial
    • Gives you a manual override at your fingertips
    • Offers simple diagnostics with colored LED alerts
  • Main unit mounts out of sight behind the dash in any position, direction, and angle
    • No more banging your knee on a bulky controller
    • No interference with airbags or other vehicle accessories
    • Universal wiring harness (RED69FR - sold separately) or vehicle-specific adapter (sold separately) required for installation
  • Meets or exceeds both UNECE R21 and FMVSS 201 regulations for sustainability and safety
  • Made in Australia


  • Application: trailers with up to 2 axles (4 brake assemblies)
    • Compatible with electric or electric-over-hydraulic trailer brakes
  • Main unit dimensions: 4" long x 3-3/8" wide x 1-1/8" tall
  • Control knob dimensions: 1-7/8" long x 9/16" wide x 3/4" tall
    • Length without dial: 1-1/4"
  • Output voltage range: 9V - 16V
  • Output current rating: 18 amps continuous
  • Maximum charging voltage: 12V DC
  • 2-Year warranty

Tow-Pro Liberty Operation

The dash-mounted knob puts control of your trailer's brakes at your fingertips. In addition to offering fast, simple power adjustment and an easily accessible manual override, it has colored LED signals that let you know what the brake controller is doing at a glance.

Redarc Tow Pro Liberty Calibration

When you are calibrating the brake controller for the first time, the LED lights will signal your progress. To finish setting up the device, you will need to drive your vehicle in a low-traffic area and brake 20 times or so to let the unit learn its orientation and the direction of travel. If your trailer is connected, the LED light will flash green/blue as it processes the information. If there is no trailer connected, the unit will still calibrate, just without the knob lighting up. The knob will stay blue longer as the calibration process gets closer to being done. When the display turns solid blue, initial calibration is complete. The unit will remain calibrated for the next time that you tow. If recalibration is required, it will happen automatically and without LED indication.

Once the brake controller is activated, you can use the knob to set the maximum amount of power that will be applied to your trailer's brakes. Typically, this power is only readjusted when you experience changing road conditions or if you switch over from a heavy, loaded trailer to a much lighter, empty trailer, or vice versa. To get more power to your brakes, rotate the knob clockwise toward 10. To decrease the power output, rotate it counterclockwise toward 0.

Redarc Tow Pro Liberty Braking Output Red Light

When you apply the tow vehicle's brakes, the knob will change from blue to red to signal that the trailer brakes are being activated. The higher the braking power output, the deeper the red that you will see.

Redarc Tow Pro Liberty Manual Override

The Tow-Pro Liberty keeps the manual override within easy reach, great for stopping sway or controlling your trailer's momentum in emergencies. To engage the manual override, just press the control knob. 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.

Redarc Tow Pro Liberty review

Simple, Out-of-the-Way Installation

Unlike most proportional controllers on the market, the Tow-Pro Liberty has almost no mounting restrictions. It comes in 2 pieces - the main unit and the control knob. Because the only part that you need to be able to access is the control knob, the main unit can be mounted out of sight and out of the way. You don't have to worry about dinging your knee on a bulky brake controller or interfering with your vehicle's lower airbags.

Redarc Tow Pro Liberty Dash Mounted Remote Knob

The dash-mounted control knob can be installed in any convenient spot that's easy for you to see and access. This can be a blank switch panel, an open spot on your center console, or wherever there's space on your dashboard. You can pick up a universal mounting panel (331-TPSI-001 - sold separately) for a clean, from-the-factory look. Custom-fit panels are available for certain vehicles as well. Before you do any drilling, be sure there's room behind the dash for the entire knob to install, including the part you don't see!

where to install REDARC Tow Pro Liberty on 2023 Jeep Wrangler 4xe

Once you've decided where you want to put the control knob, you'll need to find a good place to install the main unit. Your only restriction is the 3' plug-in cable that has to be able to reach between both the main unit and the control knob. Securely mount the box using screws, double-sided tape, or zip-ties (not included). A mounting kit (RE67FR - sold separately) is also available for the Tow-Pro Liberty. Do not zip-tie the box to wiring or cables that can shift as you drive.

A vehicle-specific wiring harness (sold separately) is available for most newer trucks and SUVs. One end of the custom adapter plugs into your vehicle, and the other end either plugs directly into the controller or will splice to the wiring harness - no need to hardwire to your vehicle. If a custom brake control wiring adapter is not available for your vehicle, you will need a universal wiring harness (RED69FR - sold separately). A 30-amp circuit breaker kit (331-CBK30-EB - sold separately) may also be required for installation.

For assistance in properly wiring the Tow-Pro Liberty, please refer to the diagrams below:

Redarc Tow Pro Liberty Wiring Diagram

Installation Accessories

See'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

What is proportional Braking

The Redarc Tow-Pro Liberty 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 Tow-Pro Liberty 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.

EBRH-ACCNA Redarc Tow-Pro Liberty Trailer Brake Controller - Dash Mounted Knob - Hidden - Proportional Brake Controller

Installation Details RED24FR Installation instructions

This Product Fits The Following Vehicles

Customer Satisfaction Score:

Customer Reviews

Redarc Tow-Pro Liberty Brake Controller - Dash Knob - 1 to 2 Axles - Proportional - RED24FR

Average Customer Rating:  4.8 out of 5 stars   (1631 Customer Reviews)

Mount the control knob of this proportional brake controller on your dash for a factory look, and install the main unit out of sight behind the dash. Control your braking power with the turn of a dial, with manual override right at your fingertips.


The hardest part was getting the zip ties tightened around the module without completely removing the trim under the steering wheel. I chose near the shifter for my location so it’s easy to reach but still out of the way.



It’s been a year and it’s still working well. I was surprised to have it not work after changing the battery but all I needed to do was let the module relearn the same as when it was initially installed. All back to normal.


Works great! No more readjusting between hi way and Campground driving. Looks great. Straight forward instruction for installation.



My Redarc Tow-Pro works great, now I have a second tow vehicle I will will buy another Redarc to continue the same great stopping control.


This thing is so much better than the old controller I used to use. I like that it lets the break off after you stop moving even if you have your foot on the petal. Smooth breaking response all together. Plus, I was able to install the knob in an unused switch blank in my 2020 Pilot. You do have to be a little crafty to get it to fit there but it is possible.



Still awesome


I was surprised how nice this brake controller is - clean install with the unit up under the dash. I installed the knob in one of the 'blanks' in the dash for a really clean look. No banging knees on older-style controllers under the dash. Thanks!

Bobby Q.


After a year, still working good. We took the Pathfinder and the camper for a 450-mile round trip last weekend and it is still working as it should. The calibration takes a little longer sometimes when you go from trailer to trailer but Ive never had it not work eventually. It may be due to rust on our hitch or grounding on the car - still 100 satisfied.


Being new to towing a larger trailer requires research. After doing a lot of it, both through user reviews and manufacturer websites, we landed on the Rearc Liberty Brake Controller for our Tacoma. We have just over 1000 miles towing with this unit. It has performed extremely well. Towing for us includes city, highway, mountains, and even off-road to access our mountain home. Installation was straight forward and the ability to install the controller in virtually any position is an added bonus. I was able to install the dash knob in a blank panel giving the Tacoma a factory appearance, and controller located under drivers seat. I installed this unit on a non tow package Tacoma, so wiring was a bit intimidating at first. But using etrailer’s web site as a reference had everything operational in a couple afternoons. Great product so far and we look for years of use. Highly recommend.


Installed this in my 4runner that I use to haul several thousand pounds of metal boxes on an aluminum heavy variant tilt deck trailer. Install was fast and easy, the main unit is small and is easily tucked up under the dash. I drilled one small hole and placed the small lighted selector (small blue light) on the key side of the steering wheel area (see pics) and looks like it came factory from the truck. Its sasy to adjust and robust enough that it wont move settings on its own, even in rough off road conditions that a 2WD vehicle cant go. Ive had other controllers in the past but am super happy that I had lucked out and found this proportional one from Redrac with the dash knob.


The controller looks and works great. The colors are very easy to see what the controller is doing. No led colors are displayed when there is not a trailer plug in, so it almost disappears on the dash.
Reason I only gave 4 stars out of 5, like others said, the universal harness should have come with it like it does with the Elite. My truck is older so I needed the universal harness. You should only have to buy one if it is a direct plug and play for newer trucks.

2018 Kia Sorento

This review includes the following items: Item #RED69FR - Wiring Harness, 30A Breaker kit and Item # ETBC7 Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat and Item #RED24FR Controller. I wanted to be sure I had everything. A local place Custom Coach on Pulaski Hwy, Baltimore did a fantastic job on the install, Sorry I can't remember the techs name. I have a 2018 Kia Sorento SX V6, AWD with 4 pin Tow Pkg. car rated for 5k/500# load. Trailer is a 2022 Palomino Real Lite RL-186. I've logged 2 trips so far 1 to NYS mostly highway and to Cass, West Virginia area. The controller adapted quickly, I went to a '5' to a '4' setting even in the mountains it was smooth no jerking. The one picture shows installation ubder the dash totally out of the way. It works great!


Very clean option for a proportional trailer brake controller. Nothing to knock your knees on and easy to access for extra braking as I mounted it in the dash of my E350.


Install was quick and easy. The only thing that gave me grief was that darn "Trailer Brake Warning Fault" message that kept displaying on my message information display on dash. After troubleshooting for several days and calling etrailer for assistance with no solution, I tried calling Redarc with the included state-side tech support. The number puts you in touch with an Ausie down under so you have to adjust your call with thier time zone. Turns out, and VERY IMPORTANT,if you are replacing an OEM Trailer Brake Controller already installed in truck. The TBC Controller Brake Module has to be deactivated to make the fault go away. Truck still think it has a TBC and is looking for it. I used Forscan software to deactivated it through the OBDII port.

I love the features of the RedArc Tow Pro Liberty and its ease of use..

Toyota 4Runner

Installation went just like the video. I needed a break controller on my 4Runner, but didn't like the look or placement of a "stranded" break controller. Redarc Tow-Pro fit and look, or lack of look that I was Looking for. On my 4Runner I did move the factory switch placements around so the searing wheel didn't block my view of the break controler.



Still love it.

2018 Toyota Highlander

Relatively easy install. I think it would be good if you would update the kit to include a 1 amp diode and instructions to install it. This is to prevent backfeed of electric current from brake controller which causes error issues on the 2018 Toyota Highlander.



Still loving it. Works great.

2023 Hyundai Palisade

I haven't had the opportunity to install this brake controller yet, but so far I like what I see. Especially the small profile of the controller and the dash knob. I bought this to tow a 17' Casita travel trailer. I am just waiting on the 7-pin tow harness from Hyundai before I can put it all together. The instructions indicate that all of the connections are plug and play, so I anticipate a pretty straightforward install.

Todd E.


Still going strong! Works as expected. Nice soft braking of my lightweight Casita travel trailer. Installation was plug and play with my 2023 Hyundai Palisade. Pretty much a set it and forget it device.

Etrailer Expert

Jesse M.


@ToddE Thanks for sharing Todd! Glad to hear the Redarc controller is serving you well.


Great product, shipped fast and I could not be happier with the "from the factory" appearance of the installation. I painted the embossed letters in the switch mounting plate so it would match the other switches. The brake controller works well and it really looks great.


After much research I opted for this Redarc brake controller, the ability to tuck away the main box for cleaner appearance and incorporate the contoller switch to a factory lnstall look. The longest process of install was simply deciding where best to mount box and control switch to personal liking.
After a couple short trips to allow the unit to calibrate per our trailer, we were on the road for the season of camping. A year later and hooking up for a first outing, we notice the unit does a quick recalibration, wasn’t expected, so for this reason only I give four star. Aside from that it works beautifully and responsively to braking controls to our RV unit.


The instructions say that this brake controller REQUIRES being mounted with the Redarc mounting bracket which is SOLD SEPERATELY. I don’t know why you would sell the mandatory mounting bracket separately… I had to order it and wait another 2 weeks before installing. Very frustrating.

Etrailer Expert

Jenny N.


The dash mounted control knob can be installed in a blank switch panel, an open spot on your center console, or wherever there is space on the dashboard. There is a vehicle specific mounting bracket for the 2021 Toyota Tacoma part # 331-TPSI-002 that can be used.

2004 Dodge Ram Pickup

Works great and is out of the way. Just find a place under the dash that is secure and bolt or plastic wire tie it in. I had to buy the universal wiring harness also so I could wire it to my 7 pole. You would think it would come with one but I’m guessing there are many types of wiring for each vehicle manufacturer.

Toyota Highlander

Simple to install. Worked smoothly and is as aggressive as you need. No more knee banger. Unit installed easily out of sight. Control is easy to access on the dash. The Adapter for the blank switch cover is a must for a clean installation on the Toyota Highlander.

Ford Explorer

We just completed a 1200 mile journey with the Redarc Tow-Pro Liberty Brake controller in a 23 Explorer pulling a 5000 lb Travel Trailer. No Interstate roads on this trip, from Florida to northern Ohio through the mountains of Tennessee and Kentucky on secondary roads. The Redarc performed flawlessly.


I love this brake controller. I put it in my brand new 2023 Silverado 1500. It looks factory the way I installed it. No big bulky controller hanging under the dash. Would highly recommend.


I installed this over a year ago in my Honda Pilot. The video was the perfect help. It worked like a charm and like so clean and professional. I could not be happier.


etrailer is an excellent e-commerce store that has great products and fantastic employees that are always willing to help. The photos and videos are super helpful.


Expedited shipping was super fast with no problems. I installed the unit myself and it was fairly simple. I recommend getting the exact fitting wire harness (huge time saver) and I’d recommend getting and exact fit knock out to install the dial in. (Another big time saver). I drilled a hole in my own blank or knock out thingy and I’m pleased with it but it took a little time. I’ve got a 2010 Honda Pilot. Funny thing, after rushing to install the brake controller, our trailer had to go in for repairs before we even completed the transaction. It will be another month before I actually use the brake controller.



Great! The controller worked perfect and I was able to dial in the exact perfect resistance for the trailer brakes and everything towed very well. Unfortunately we sold our trailer but the brake controller still looks great in the car and I even got a compliment on how Stock or OEM it looked.


Install took about an hour and a half. I have big hands that didn't play well with the room under the dash. The controller didn't go into setup mode until I hooked up the trailer and drove around. Other than that so far so good.


Easy to install and works perfectly. I tow a 4200 lbs travel trailer with a Ford Explorer. On my longest trip from Northern New York to The Southern tip of Florida and back, the brake controller gave us flawless performance. During the January to May trip, I encountered various weather and terrain. I purchased a second one for my daughter who owns a similar rig.

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  • Parts Needed To Install Redarc Tow-Pro Liberty RED24FR In 2007 Toyota 4Runner
    The Redarc Tow-Pro Liberty # RED24FR you were looking at is a great option for your 2007 Toyota 4Runner as long as the trailer you plan on towing does not have more than 2 braking axles. If your trailer has more than 2 braking axles you will need the # RED44FR instead as it is compatible with up to 3 braking axles. This controller is nice due to it having only a knob visible, instead of an entire controller that you hit your knees on when getting in and moving around. To mount the # RED24FR...
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  • Parts Needed to Install a Proportional Brake Controller in a 2008 Kia Sedona with 4-Way Connector
    We can get you set up with what you will need for a proportional brake controller in your 2008 Kia Sedona. The first thing you will need is the Universal Installation Kit for Trailer Brake Controller # ETBC7. This kit will adapt your current 4-flat connector into the 7-way connector you will need for you trailer brake controller. I also recommend the Curt No-Drill Bracket # C57202 which will allow you to mount the 7-way bracket that is included in the # ETBC7 kit to your hitch. The proportional...
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