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  1. Trailer Brake Controller
  2. Ram
  3. 1500 Classic
  4. 2020
  5. Redarc
FITS 2020 Ram 1500 Classic
Redarc Tow-Pro Liberty Brake Controller w/ Custom Harness - Dash Knob - Up to 2 Axles - Proportional
Redarc

Redarc Tow-Pro Liberty Brake Controller w/ Custom Harness - Dash Knob - Up to 2 Axles - Proportional

Part Number: RED87CR
$190.00
Trailer Brake Controller
Confirmed to Fit
2020 Ram 1500 Classic

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Call etrailer.com at 1-800-940-8924 for expert service. We are your Ram trailer brake controller experts, and offer a great price. etrailer.com carries a complete line of Redarc products for your Ram 1500 Classic 2020. Redarc Tow-Pro Liberty Brake Controller w/ Custom Harness - Dash Knob - Up to 2 Axles - Proportional part RED87CR from Redarc can be ordered online at etrailer.com. Complete trailer brake controller installation instructions and technical support.
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Redarc Trailer Brake Controller - RED87CR

  • Electric
  • Electric over Hydraulic
  • Proportional Controller
  • Up to 2 Axles
  • Redarc
  • Behind-Dash
  • Dash-Mounted Knob
  • Plug-In
  • Indicator Lights
  • Single Trailer Only

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
  • Plug-and-play - Vehicle-specific harness included
  • 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.


Redarc Tow Pro Liberty Dash Mounted Remote Knob

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.


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!


Custom wiring harness of Redarc Tow Pro Liberty

Then plug the custom-fit harness right into your vehicle and the brake controller and you're done!


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 controller installation kit (ETBC7 - sold separately).


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

TPH-020 Redarc Wiring Harness for Tow Pro Electric Brake Controllers - Plug and Play

Installation Details RED87CR Installation instructions

California residents: click here


Customer Satisfaction Score:

Ratings & Reviews

4.8

2085 reviews
5 Stars
(1789)
4 Stars
(192)
3 Stars
(37)
2 Stars
(27)
1 Star
(40)
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.

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See what our Experts say about this Redarc Trailer Brake Controller

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  • Recommended Trailer Hitch and Brake Controller for a 2020 Ram 1500
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  • Installing Redarc Tow Pro Liberty Brake Controller on 2021 Ram 1500
    We don't have a video for the install of the Redarc # RED24FR Liberty brake controller on a 2021 Ram 1500, but I'd be happy to link to a video for a different brake controller that shows where the # 331-TPH-020 wiring harness plugs in. The harness plugs into the connector located above where the driver's right knee would be, as shown at the 1:18 minute mark in the linked video. The # RED24FR Liberty would mount under the dash, out of sight and the control knob could be mounted anywhere...
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  • Recommended Trailer Brake Controller For a 2019 Ram 1500 Bighorn
    I recommend the Redarc Tow-Pro Liberty Brake Controller # RED24FR for your new body style 2019 Ram 1500 Big Horn. This proportional controller is very user friendly and has a small control knob that you can mount to your dash where it is most convenient for you. I recommend just above the CD/DVD slot where the factory brake controller would mount. You will need the Redarc Plug-and-Play Wiring Harness # 331-TPH-020 to connect to the factory connector on your Ram.
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  • Plug and Play Wiring Harness To Install Redarc Tow Pro Brake Controller On 2024 Ram 1500
    The Redarc Plug-and-Play Wiring Harness # 331-TPH-020 will allow you to easily connect the Redarc Tow-Pro Elite Brake Controller # RED44FR on your 2024 Ram 1500.
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  • Will Redarc Tow-Pro Liberty LED Be Visible With Universal Mounting Panel
    Hey Thomas! The LED on the Redarc Tow-Pro Liberty Brake Controller # RED24FR will still be visible with the Universal Mounting Panel # RED37FR. If you take a look at the picture below you will see it is illuminated blue in the dash. For a plug and play installation on your 2022 Ram 1500 you can use the wiring harness # 331-TPH-020. Let me know if you need anything else.
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  • Will A Redarc Tow Pro Liberty Require A Visit To The Ram Dealership To Install In A 2022 Ram 1500
    No, once you have the Redarc Tow-Pro Liberty Brake Controller # RED24FR wired up in your 2022 Ram 1500 all you'll need to do is calibrate the controller. This can be done by simply driving around and and then coming to a complete stop. The control knob of the unit will blink blue and green during this process and will eventually be solid blue when fully calibrated. I've installed a few of these myself and the unit has typically calibrated for me within just a few minutes. I recommend...
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  • OEM vs. Aftermarket Brake Controller for 2018 Ram 1500 Tradesman
    I doubt you'd be able to increase the asking price of your 2018 Ram Tradesman if you installed the OEM brake controller but I would think that it could only help in selling process to be able to say that option is on the truck. The truck market is pretty crazy though so I doubt you'd have any trouble selling the truck either way and will probably be able to ask a premium price. If you wanted the best function and safety though you really can't beat aftermarket brake controllers like the...
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  • Recommended Plug and Play Adapter to Install a Brake Controller in a 2024 Ram 2500
    I would be happy to! You're looking for the Redarc Plug-and-Play Wiring Harness for Tow-Pro Trailer Brake Controllers item # 331-TPH-020. This will allow you to install either the Redarc Tow-Pro Elite Brake Controller item # RED44FR or the Tow-Pro Liberty item # RED24FR in your 2024 Ram 2500 without cutting or splicing wires.
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  • Redarc Plug & Play Harness For Tow-Pro Liberty On a 2020 Dodge Ram 1500 Bighorn New Body Style
    Yes, the Redarc Plug-and-Play Wiring Harness # 331-TPH-020 is the correct harness for adding the Redarc Tow-Pro Liberty Brake Controller # RED24FR to your 2020 Ram 1500 Bighorn. The Universal Mounting Panel # 331-TPSI-001 can be used for a more factory look. Yes, you will be able to connect it with the harness and be ready for towing, unless you previously had a factory brake controller. If you had a factory controller your truck will need to be flashed by a dealer to remove the programming...
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  • Which Harness For Redarc Liberty Brake Controller For 2025 Ram 1500
    Hi Steven, Thanks for the purchase and we do have the right harness for your 2025 Ram 1500 and the Redarc Liberty Brake Controller # RED24FR. The correct plug-in harness is the following part: - Redarc Plug-and-Play Wiring Harness # 331-TPH-020 You can also find the instructions linked below.
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  • Recommended Hitch and Brake Controller for a 2022 Ram 1500 Classic
    The Curt Trailer Hitch Receiver item # 13333, you were looking at, is exactly what you need to add a hitch to you Ram Warlock's bumper. This is a class III hitch with a 2" receiver and it sounds like you have a 2" ball mount. I have linked the instructions below along with an installation video. This hitch is probably the easiest one I have ever seen to install but if you have any additional questions feel free to through them into a comment box below. Additionally, if you're towing...
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  • Recommended Redarc Brake Controller For A 2022 Ram 1500 Big Horn
    Hey Jesse, All of the Redarc brake controllers will work but for a 2022 Ram 1500 Big Horn you'd would want the Redarc Tow-Pro Liberty Brake Controller # RED87CR. This will come with a custom- fit wire harness to plug in instead of having to hardwire anything for a much easier installation. As for the the control knob, I recommend following John's video below for where to install it for a nice factory look in the dash. The other versions (Elite and Trail) are meant for either heavier-duty...
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  • Brake Controller and Install Harness Recommendation for 2025 Ram 1500
    Hey Chris, it looks like the 2025 Ram 1500 does use the same brake controller install harness as previous years so you could use the part # RED87CR which is a Redarc Tow Pro Liberty and the custom fit harness for your truck. We REALLY like the Tow Pro Liberty as you get a really great performing proportional brake controller that only puts a small knob on the dash of the truck.
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  • Does Redarc Tow-Pro Liberty Fit 2021 Ram 1500 Classic
    Hey Dan, Yep, I am happy to verify for you the Redarc Tow-Pro Liberty Brake Controller w/ Custom Harness # RED87CR is indeed a fit for your 2021 Ram 1500 Classic.
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  • What Redarc Tow-Pro Liberty Brake Controller & Wiring Harness For 2023 Ram 1500
    Hi Scott, Sorry for any confusion, but I can verify for you the Tow-Pro Liberty and custom harness for your 2023 Ram 1500 are the following part: - Redarc Tow-Pro Liberty Brake Controller w/ Custom Harness # RED87CR The other part number you referenced is just the controller itself and does not include the plug-in harness, so the videos were just referencing that. But for your '23 Ram 1500, the # RED87CR is exactly what you need.
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  • Brake Controller Recommendation for 2020 Ram 2500
    We can get your 2020 Ram 2500 set up with a brake controller, and I recommend an option from Redarc; you will also need the correct wiring adapter: - Redarc Tow-Pro Liberty Brake Controller w/ Custom Harness # RED87CR This gives you both the brake controller and harness needed for your truck, and I really like the Liberty because of its control knob which keeps a cumbersome unit out of your cab. The knob is not only small, it's easy to use and it's turn dial settings give you more control...
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  • Where is the Brake Controller Connector in My 2024 Ram 1500 Classic? What Connector is on the Back?
    Hello again Brett, Congrats on the new truck! I am pretty sure that the connector on the back of your 2024 Ram 1500 Classic is a 7-way connector, you are supposed to count all the slots and include the piece in the middle. I attached some pictures for you to review so you can compare it to what you have. All of the 2024 Ram 1500 Classics are equipped with wiring harness connector to my knowledge. For a brake controller I recommend the Redarc Tow-Pro Liberty Brake Controller w/ Custom...
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  • Brake Controller Recommendation for 2024 Ram 1500 Classic
    Hey Brett, if you were looking for a solid brake controller that works great and doesn't break the bank either the Tekonsha Brake EVN part # TK48BR would be a great option that comes with a custom harness for your truck so it just plugs right in and is ready to go. This is a traditional style of brake controller that mounts to the dash. If were looking for more of a low profile brake controller the Redarc Tow Pro Liberty part # RED87CR would be what you want. This puts a small knob on...
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  • Recommended Brake Controller to Replace the Factory Controller on a 2015 Ram 2500
    I sure can! For your 2015 Ram 2500, I recommend the Redarc Tow-Pro Liberty Brake Controller w/ Custom Harness item # RED87CR. This is a proportional brake controller that automatically adjusts your trailer's braking based on the deceleration of your Ram, so no more being pushed. The Liberty has a unique installation method where the main unit is concealed behind your dash and the only part visible is the control knob. The Redarc item # RED87CR comes with a plug and play harness that'll...
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  • Will The Tow Pro Liberty Work with my 2020 Ram 1500 Big Horn with the 5.7L HEMI?
    Hello Chris, Yes, the Redarc Tow-Pro Liberty brake controller will work great in your 2020 Ram 1500 Big Horn with the 5.7L HEMI New Body just as long as you are not towing anything with more than 2 axles. For the Tow-Pro Liberty you will want part # RED87CR, this part number will come with the brake controller and the vehicle specific pigtail for a simple install. For a clean looking install don't forget to grab a mounting bracket, for your Ram you can use the universal mounting panel...
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  • Redarc Plug-And-Play Kit For 2016 Ram 1500
    Hello John. The correct Redarc plug-and-play kit for your 2016 Ram 1500 is part # RED87CR. This comes with the Redarc Tow-Pro Liberty Brake Controller as well as the custom plug and play pigtail for your 2016 Ram.
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  • What Redarc Brake Controller will come with the Vehicle Specific Pigtails for My 2025 Ram 1500?
    Hello Michael, Congrats on the new truck! What is your favorite new feature? Yes, the Redarc Tow-Pro Liberty Brake Controller w/ Custom Harness - Dash Knob - Up to 2 Axles - Proportional # RED87CR comes with the vehicle specific pigtail making it a simple install for your 2025 Ram 1500. Don't forget a Universal Mounting Panel for Redarc Tow-Pro Trailer Brake Controller Control Knob # 331-TPSI-001 for one of those empty spots on your dash.
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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Joshua S
Video Edited:
Joshua S
Employee Jonathan Y
Video Edited:
Jonathan Y
Employee Chris R
Video by:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Sabrina W
Updated by:
Sabrina W
Employee Amanda K
Written by:
Amanda K
Employee Scott A
Test Fit:
Scott A

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