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Redarc Tow-Pro Liberty Brake Controller - Dash Knob - Up to 2 Axles - Proportional
Plug-and-Play Wiring Harness for Redarc Tow-Pro Trailer Brake Controllers

Part Numbers: RED24FR,RED39FR

$190.00
Retail:$209.30
You Save: $19.30
Trailer Brake Controller

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Redarc Tow-Pro Liberty Brake Controller - Dash Knob - Up to 2 Axles - Proportional
part number: RED24FR

This is one of our favorite brake controllers, with flawless braking and a tiny dash knob that looks like it came straight from the factory. It's so easy to adjust your settings or activate manual override.

Features:

  • Proportional - Smooth, safe, and good for your brakes long-term
  • Sleek (tiny!) knob that blends into your dash - The main unit mounts out of sight behind the dashboard
  • Simple controls - Use the knob to adjust the settings, activate manual override, and troubleshoot
  • Safe - Meets or exceeds both UNECE R21 and FMVSS 201 regulations for sustainability and safety
  • Requires universal wiring harness (RED69FR - sold separately) - Custom-fit adapter (sold separately) available for select vehicles
  • Made in Australia - If it can take the Outback, it can take anything, mate


Specs:

  • 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


Note: Pick up a universal mounting panel to give your installation a professional look! 331-TPSI-001 - sold separately


How to Use Redarc Tow-Pro Liberty

Adjusting the braking settings on the Tow-Pro Liberty is super simple. To get more power output - the maximum amount of power that will be applied to your trailer's 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.


Manual Override

To engage manual override, simply press the control knob. This will activate the trailer's brakes and brake lights independent of your tow vehicle, great for stopping sway or controlling your trailer's momentum in an emergency.


How to Calibrate Redarc Tow-Pro Liberty

When you are calibrating the brake controller for the first time, the LED lights will signal your progress.


You'll start by braking 20 times or so to let the unit learn its orientation and the direction of travel. You don't need to have a trailer connected for it to calibrate; the only difference is that the knob won't illuminate at all. If your trailer is connected, the LED light will flash green/blue as it calibrates. When the display turns solid blue, initial calibration is complete.


Redarc Tow Pro Liberty Dash Mounted Remote Knob

Once done, the unit will remain calibrated. If recalibration is required, it will happen automatically and without LED indication.


How to Install Redarc Tow-Pro Liberty

The Liberty has almost no mounting restrictions. It comes in 2 pieces: the main unit and the control knob. The main unit mounts 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 airbags.


The 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. A universal mounting panel is included to ensure 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 enough clearance behind the dash for the entire knob to install!


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' cable connecting 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 attach the module 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 will either plug directly into the controller or will splice into the included 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.


Note: If you don't already have a 7-way plug at the back of your vehicle, take a look at our exclusive 7- and 4-way brake-control installation kit (ETBC7 - sold separately).


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


Redarc Tow Pro Liberty Wiring Diagram

What is Proportional Braking?

What is proportional Braking

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



Plug-and-Play Wiring Harness for Redarc Tow-Pro Trailer Brake Controllers
part number: RED39FR

Install your Redarc Tow-Pro electronic brake controller (sold separately) quickly and easily with this custom wiring adapter. Plug one end of the adapter into your Tow-Pro brake controller and plug the other end in beneath your vehicle's dash.

Features:

  • Wiring adapter eases installation of your Redarc Tow-Pro Classic, Elite, or Liberty electric brake controller
  • Custom connector end plugs into the port beneath your vehicle's dash
  • Other end plugs into your Tow-Pro electric brake controller
    • Some wire splicing required for Tow-Pro Classic
  • Made in the USA
  • 2-Year warranty


TPH-014 Redarc Wiring Harness for Tow Pro Electric Brake Controllers - Plug and Play




Customer Satisfaction Score:

Ratings & Reviews

4.8

2176 reviews
5 Stars
(3750)
4 Stars
(394)
3 Stars
(78)
2 Stars
(52)
1 Star
(78)
This is one of our favorite brake controllers, with flawless braking and a tiny dash knob that looks like it came straight from the factory. It's so easy to adjust your settings or activate manual override. Install your Redarc Tow-Pro electronic brake controller (sold separately) quickly and easily with this custom wiring adapter. Plug one end of the adapter into your Tow-Pro brake controller and plug the other end in beneath your vehicle's dash.

by: Rose04/20/2025

Very simple to install even if I had to go to the Internet for a little guidance. The hook up for the controller on my 2022 Ford Explorer was actually under the rear and not under the dash.



by: Michael04/20/2025

Great product! Very easy install!



by: Timothy 03/16/2023



by: Jarrett 07/30/2022



by: J.05/27/2023



by: Joe 06/15/2023



by: Richard 03/05/2023



by: Sonja05/24/2023



by: Carl 08/19/2023



by: Randall 09/14/2023



by: Matthew 04/26/2023



by: Bob 08/07/2023



by: Joseph 05/07/2023



by: Ron07/22/2022



by: Tainter07/09/2023



by: Scott 03/08/2023



by: Don 02/06/2024



by: John 07/08/2022



by: Gene 10/14/2022



by: Gary 05/07/2024



by: Marshall 05/23/2024



by: Blake 03/31/2023



by: Roger 08/30/2022



by: Bruce 08/28/2022



by: Philip 10/29/2022


25
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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 a Red Arc Brake Controller in a 2023 Toyota Tacoma
  • To install a Redarc Tow Pro Liberty in your 2023 Toyota Tacoma Sport you will need the following parts: Redarc Tow-Pro Liberty Brake Controller item # RED24FR Plug-and-Play Wiring Harness for Redarc Tow-Pro Trailer Brake Controllers item # RED99FR Mounting Panel for Redarc Tow-Pro Trailer Brake Controller Control Knob item # 331-TPSI-002 You don't need a mounting bracket to mount the main control unit. It comes with slots in the sides for zip tying it some where convenient.
    view full answer...

  • Custom Wiring Harness for Redarc Tow-Pro Liberty Installation in 2024 Jeep Grand Cherokee L
  • Hey Rich! The Liberty is my favorite brake controller and one you will be really happy with. Your 2024 Jeep Grand Cherokee L does have a tow port for brake controller installation. Redarc doesn't make a specific wiring harness so you will need the following: -Redarc Tow-Pro Liberty Brake Controller # RED24FR -Curt Custom Wiring Adapter for Trailer Brake Controllers # C51446 -Redarc Tow-Pro Wiring Adapter for Curt Brake Controller Harness # 331-TPH-019 The Curt wiring harness will fit
    view full answer...

  • Best Place for Running Wiring For a Trailer Brake Controller Into Cab on a 2022 Subaru Outback
  • I always recommend being careful when cutting into any grommets as you do not know what may be inside or behind them. I do see that in our Installation video for the Tekonsha P3 Trailer Brake Controller # 90195 they used the same hole to pass the wires through for. I have linked this video near the bottom of the page and you can see the location near the 13:00 mark of the video. There he only slits an opening in the grommet itself and not the rubber tube. As I see you are looking at the
    view full answer...

  • Parts Needed to Install 7-Way and Brake Controller 2024 Toyota Grand Highlander
  • We can definitely help install a brake controller and 7-way on your 2024 Toyota Grand Highlander but first the brake controller I recommend is the Redarc Tow Pro Liberty part # RED24FR with the install harness part # RED69FR. As this controller puts only a small knob on the dash of your vehicle and works really well using an inertia sensor to sense how hard to apply the trailer brakes. You will also need the 7-way kit part # TK57VR that its your vehicle which also comes with brake controller
    view full answer...

  • Recommended Brake Controller to 2024 Nissan Frontier With Tow Package
  • For your 2024 Nissan Frontier I recommend the Redarc Tow-Pro Liberty Brake Controller # RED24FR. I like the Liberty because it is simple, reliable, and looks great in any vehicle. The main unit installs behind the dash, so only the control knob will be visible. The knob controls the braking power and acts as the manual override. It also uses colored LED lights for diagnostics. The # RED39FR wiring harness will plug into the port under the dash you referenced for a plug and play installation.
    view full answer...

  • How to Connect Redarc Tow-Pro Liberty on 2022 Jeep Grand Cherokee Without Tow Package
  • Hi Andrew; there won't be a factory tow port since you don't have the tow package. The # RED69FR wiring harness you ordered splices in for the installation of the # RED24FR. It will be very similar to the installation video I attached below which includes the # ETBC7 you ordered. The blue brake output wire will connect to the wiring from the # ETBC7, the black wire is power, the white is ground, and the red connects to the cold side of the stoplight switch on your Jeep.
    view full answer...

  • Flashing Light With Redarc Liberty Brake Controller
  • Is there an issue with the brake controller working?
    view full answer...

  • Parts Needed To Install a Redarc Tow-Pro Liberty Brake Controller On a 2020 Ford F-150 XLT
  • Yes, you can install the Redarc Tow-Pro Liberty Brake Controller # RED24FR on your 2020 Ford F-150 XLT. You will need the Tekonsha Plug-In Wiring Adapter # 22292 to connect to the factory connector on your F-150 that came with a 7-way towing connector. Then you will connect the Liberty to the Tekonsha harness using the Adapter # 331-TPH-017. There is a chance that your factory connector will not have battery power on the connector. If your connector does not have power you will need
    view full answer...

  • What Redarc Brake Controller Comes with the Vehicle Specific Pigtail for My 2015 GMC Sierra 1500?
  • Hello Drew, I'm glad that you wrote in. For your 2015 GMC Sierra 1500 you want part # RED26CR, this part number is the brake controller and the vehicle specific pigtail for you Sierra 1500. The # RED24FR you were looking is just the brake controller by itself.
    view full answer...

  • Should There Be a Light On the Redarc Tow-Pro Liberty Brake Controller While Driving Without Trailer
  • In regards to the Redarc Tow-Pro Liberty Brake Controller part # # RED24FR, the unit should not be illuminated while driving without a trailer. If you press the button while a trailer is not attached you should see a breathing blue light and that simply indicates the controller is in sleep mode. This is further explained in the manual so please give this a look over.
    view full answer...

  • Troubleshooting Redarc Liberty Solid Red Light When Installed on a 2020 Cadillac Escalade
  • Hey Matthew, thanks for reaching out! The Redarc Tow-Pro Liberty Brake Controller # RED24FR should only be showing solid red when you press and hold the control knob to show that you're using the manual override operation. Since it sounds like this isn't working correctly, I recommend verifying that all of your wiring is connected to the correct functions, and that the manual override will activate your trailer brakes. I see that you used the Plug-and-Play Wiring Harness # 331-TPH-010
    view full answer...

  • Is Encapsulated Power Diode Needed to Install Redarc Tow-Pro Liberty on a 2020 Subaru Forester
  • The Redarc Encapsulated Power Diode # RED34FR shouldn't be needed for installing the Redarc Tow-Pro Liberty # RED24FR and Pigtail # RED69FR on your 2020 Subaru Forester. The answer page you're referring to didn't have us telling someone to install it, rather that person asked how it installs and our expert gave them insight on how to install it. Aside from that we haven't recommended the Power Diode for any other Subaru vehicles.
    view full answer...

  • Recommended Brake Controller for a 2001 Toyota Tundra With OEM Towing Package
  • Justin, it does not look like that's going to be an option unfortunately. It seems odd that they'd offer this truck with a factory tow package but no one ever made a plug in adapter, but that looks to be the situation. I checked with Tekonsha as well to make sure I wasn't missing anything, but it looks like your only option is to use a universal harness which would splice into your OEM wiring. You could also use the Curt Echo Wireless Brake Controller # C51180 which would plug into
    view full answer...

  • Brake Controller Recommendation for 2005 Toyota Tundra SR5
  • Hey Deanna, the brake controller I recommend for your 2005 Toyota Tundra is the Redarc Tow Pro Liberty part # RED24FR as it only puts a small knob on the dash of your truck and uses an inertia sensor to determine how hard you are hitting the brakes for applying the trailer brakes. To wire it to your truck all you need is the correct install harness which is part # RED49FR.
    view full answer...

  • Brake Controller Recommendation for 2022 Hyundai Santa Cruz Premium with 4-Way
  • Hey Karen, so your 2022 Hyundai Santa Cruz Premium does have the tow package based on what you have mentioned. So what you need to convert your 4-way to a 7-way and install a brake controller as easily as possible is the Curt 7-way kit part # C68JR which installs without requiring any extensive wiring. Then for a brake controller I really like the Redarc Tow Pro Liberty part number # RED52VR which gives you a proportional brake controller that only puts a small knob on the vehicle dash.
    view full answer...

  • Troubleshooting Fault Codes in a Redarc Tow Pro Liberty Installed in a 2022 Toyota 4Runner
  • The easiest way to determine what could be causing the issue with your Redarc Tow-Pro Liberty Brake Controller # RED24FR, installed in your 2022 Toyota 4Runner using the Plug-and-Play Wiring Harness # RED49FR is to check the fault code chart in the installation instructions. There are a number of different fault codes that indicate the problem and solution. I have included pictures of the fault code chart here for quick reference. If you you need further help with this, please let me
    view full answer...

  • Parts Needed to Add Redarc Tow-PRo Liberty Brake Controller to 2022 Ford Ranger With Tow Package
  • Hi Charles; the Redarc Tow-Pro Liberty Brake Controller # RED24FR can be added to your 2022 Ford Ranger XL with the factory tow package. It doesn't look like the Ranger has a factory brake controller port, even with the factory 7-way, so you will need the Universal Wiring Harness for Redarc Tow-Pro Trailer Brake Controllers # RED69FR for installation.
    view full answer...

  • Can The Redarc Tow Pro Liberty Be Used On 2012 Chevy Tahoe With Factory Tow Package?
  • Hello Tom, thanks for getting in touch. The Redarc Tow-Pro Liberty Brake Controller can absolutely be used on a 2012 Chevy Tahoe with the factory tow package. GM did not install the necessary port for the brake controller on the 2012 Tahoe, but the wires are already present under the dash, so can simply hardwire the controller. For that use the Redarc Tow-Pro Liberty Brake Controller # RED52VR. This comes with the controller and the universal pigtail you can use for installation.
    view full answer...

  • Troubleshooting a Redarc Tow Pro Liberty that Isn't Turning On A 2019 Infiniti QX80
  • Hey Josh, since you're using a plug and play harness # RED39FR there shouldn't be a whole lot of riff raff to use it so the only thing I can think of is that either you have a faulty harness or that there is a blown fuse somewhere that needs to be replaced. You'd need to consult your owner's manual for a fuse diagram and look for anything relating to towing and check the fuses. There's also a chance that the fuse itself was never put in, so I'd keep my eye out for that as well.
    view full answer...

  • Will Redarc Wiring Adapter Fit a 2023 Nissan Frontier with the Factory Tow Package
  • The Redarc instructions for the Plug-and-Play Wiring Harness # RED39FR you purchased only lists through 2019 because they haven't updated the instructions as of yet, but the adapter will fit your 2023 Nissan Frontier and allow you to install the Tow-Pro Liberty # RED24FR.
    view full answer...

  • Troubleshooting Redarc Tow-Pro Liberty Brake Controller on a 2006 Nissan Xterra and 2022 Frontier
  • The Pigtail # RED39FR that you received with your Redarc Tow-Pro Liberty # RED24FR should match the functions on the OEM plug of both your 2006 Nissan Xterra and your 2022 Nissan Frontier. If the pins aren't matching up with the functions then either the wiring adapter you have was wired incorrectly, or your vehicle wasn't wired correctly. Some other things to look into is making sure the wiring isn't damaged anywhere and causing the functions to cross over either in the connector or
    view full answer...

  • Redarc Brake Controller Install Harness that Fits 2023 Nissan Frontier without Tow Package
  • Yes, the Redarc brake controller install harness part # RED39FR does fit your 2023 Nissan Frontier without the towing package and would be what you would need to install a brake controller like the Redarc Tow Pro Liberty part # RED24FR.
    view full answer...

  • Difference Between Redarc Tow-Pro Elite & Tow-Pro Liberty For 2022 Nissan Frontier
  • The biggest difference between the two Redarc brake controllers is that the Tow-Pro Elite # RED44FR has a proportional control and user controlled mode you can switch between, while the Tow-Pro Liberty # RED24FR has just the proportional mode. The proportional mode is for everyday, normal towing - your trailer brakes will activate at the intensity which you decelerate, and gives them the appropriate power for that deceleration. User controlled mode applies the same amount of braking
    view full answer...

  • Does Redarc Tow-Pro Elite Brake Controller Come With Mounting Panel on 2015 Nissan Pathfinder
  • Like you mentioned, there is not a specific mounting panel for the 2015 Nissan Pathfinder for the Redarc Tow-Pro Elite Trailer Brake Controller # RED44FR. So there isn't a separate panel available that I can recommend for use, which means the best option for your Pathfinder is to use the universal panel that comes the brake controller. What you will need for your '15 Pathfinder with the Tow-Pro Elite Trailer Brake Controller # RED44FR is the wiring harness, which is the Plug-and-Play
    view full answer...

  • Comparing Curt Echo And Redarc Tow Pro Elite Trailer Brake Controllers For 2019 Nissan Titan
  • Between the Curt Echo # C51180 and Redarc Tow Pro Elite # RED44FR for your 2019 Nissan Titan I recommend the Redarc as it is a one time install, and very out of the way unlike traditional trailer brake controllers. To install the # RED44FR in your Titan you will just need the Plug-and-Play Wiring Harness # RED39FR which will plug into the factory trailer brake controller port located above the emergency brake pedal. With that said, if you are planning on using multiple different
    view full answer...

  • Will the Redarc Tow Pro Plug and Play Wiring Harness Work With the Canadian Nissan Frontier
  • According to Nissan, the only real difference between the Canadian Frontier and the American Frontier is the shift on the fly 4 wheel drive system with 2WD/4Hl/4LO models, which won't affect whether the Plug-and-Play Wiring Harness for Redarc Tow-Pro Trailer Brake Controllers # RED39FR will work with your truck or not. So yes, this wiring harness will work just fine with your Frontier.
    view full answer...

  • Redarc Tow-Pro Liberty Brake Controller Wiring Adapter in 2020 Jeep Gladiator
  • In order to install the Redarc Tow-Pro Liberty Brake Controller # RED24FR in your 2020 Jeep Gladiator you will need the Tekonsha wiring adapter. The Tekonsha Custom Wiring Adapter for Trailer Brake Controllers # 3073-P is confirmed to fit your Jeep Gladiator. You will also need the # 331-TPH-017. I have attached a review of the adapter for your reference.
    view full answer...

  • Troubleshooting a Redarc Tow Pro Elite Brake Controller That's Short Circuiting
  • To fix a short circuit on your Plug-and-Play Wiring Harness for Redarc Tow-Pro Trailer Brake Controllers # RED39FR you'll need to look for any wires that appear to be broken or damaged as this is what would likely cause the wiring to short. Then I recommend checking the 12-volt black power wire to see if anywhere from the controller to the battery the wire is frayed and touching any metal. It also wouldn't hurt checking to make sure the white ground wire is grounded correctly and not
    view full answer...

  • Parts Needed to Install Redarc Tow Pro Elite in 2015 Toyota 4Runner with Tow Package
  • Yes, all of items you mentioned are correct for your 2015 Toyota 4Runner. The Redarc Tow Pro Elite part # RED44FR installs with the part # RED49FR to the factory wiring of your vehicle and the control knob insert part # 331-TPSI-002 is also a confirmed fit for a place to mount the knob.
    view full answer...

Info for these parts were:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Dustin K
Video Edited:
Dustin K
Employee Chris R
Video by:
Chris R
Employee Thomas T
Video by:
Thomas T
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Written by:
Kristina F
Employee Michael B
Installed by:
Michael B
Employee Bradley B
Installed by:
Bradley B
Employee Ryan G
Test Fit:
Ryan G

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