bing tracking image
  1. Trailer Brake Controller
  2. Redarc
  3. Electric
  4. Electric over Hydraulic
  5. Proportional Controller
  6. Up to 2 Axles
THIS ITEM IS NOT A FIT FOR
2021 Ford Ranger
Special Savings on the REDARC Tow-Pro Liberty Brake Controller.
etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
Redarc

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

Part Number: RED53CR
In Stock
$167.00
Trailer Brake Controller
Not Confirmed to Fit

2021 Ford Ranger

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

Instant Rebate
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.
By submitting this form, you understand and agree to our Terms of Sale, Website Terms of Use and Privacy Policy.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

Customer Photos

etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
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. Great Prices for the best trailer brake controller from Redarc. Redarc Tow-Pro Liberty Brake Controller w/ Custom Harness - Dash Knob - Up to 2 Axles - Proportional part number RED53CR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (3280)
  • Q & A (0)
  • Photos

Redarc Trailer Brake Controller - RED53CR

Highlights

  • Custom Fit for Your Vehicle: Works with your vehicle's existing wiring.
  • Smooth, controlled stops: Proportional braking matches your trailer’s braking to your vehicle for even deceleration.
  • Clean, factory-style look: Only a small dash knob is visible while the main unit mounts behind the dash.
  • Fast, plug-and-play install: Custom harness connects directly with no cutting or splicing needed.
  • Confident emergency control: Press the knob for manual override to steady sway or stop quickly.
  • Compact and safe design: Meets UNECE R21 and FMVSS 201 standards; rated 18 amps continuous.

Features to know about

Saves Space with Compact Knob: Mounts Behind the Dash

Traditional brake controllers can clutter your cabin and bump your knees, but this one hides the main unit out of sight. The Redarc Tow-Pro Liberty uses a small dash knob—only 1-7/8" long and 9/16" wide—with the rest of the system tucked behind the dash. It looks clean and factory-style while keeping safety clearances around airbags. The knob handles power adjustment, manual override, and LED alerts, so you get full control without any bulky box in view.

Redarc Tow-Pro Liberty dash-mounted control knob used for setting and calibrating trailer brake power

Installs Fast with Plug-In Harness: No Splicing Required

Installing a brake controller doesn’t need to be complicated. The included custom harness plugs directly into your vehicle’s tow port for a true plug-and-play setup. One reviewer noted the harness fit perfectly and even came with a 2D drilling diagram for easy placement of the knob. With roughly 3 feet of cable between the control knob and module, you have flexibility to mount everything where it fits best—no cutting or extra wiring needed.

Custom-fit wiring harness for Redarc Tow-Pro Liberty brake controller showing plug-and-play connectors

Installation location of Redarc Tow-Pro Liberty brake controller knob on 2023 Jeep Wrangler 4xe dashboard

Delivers Smooth, Balanced Braking: Proportional Control up to 2 Axles

Towing feels safer and more predictable with proportional braking. The Tow-Pro Liberty’s built-in 3-axis accelerometer matches trailer brake pressure to your own braking intensity, eliminating that push-pull lurch at stops. It supports trailers with up to 2 axles (4 brake assemblies) and works with both electric and electric-over-hydraulic systems. The result is even braking, less wear on tires and pads, and better confidence every time you slow down.

Keeps You Aware: Color-Coded LED Feedback

You always know what’s happening thanks to color cues on the knob. When you hit the brakes, the light shifts from blue to red as power increases, showing exactly how much braking force is being applied. During setup or calibration, flashing green and blue lights guide you through each step until it turns solid blue—then you’re ready to tow.

Redarc Tow-Pro Liberty brake controller knob glowing red to indicate active trailer braking

Built Tough and Ready for Long Hauls: Tested for Safety Standards

The Tow-Pro Liberty meets both UNECE R21 and FMVSS 201 safety regulations for sustainability and crash performance. It delivers up to 18 amps continuous output across a 9V–16V range and carries a 2-year warranty. Once installed, calibration happens automatically—just drive normally while it learns its orientation—and then it stays ready for every trip ahead.

Specs

Application

  • Application: trailers with up to 2 axles (4 brake assemblies)
  • Compatible with: electric or electric-over-hydraulic trailer brakes

Dimensions

  • 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"

Electrical

  • Output voltage range: 9V - 16V
  • Output current rating: 18 amps continuous
  • Maximum charging voltage: 12V DC

Warranty

  • Warranty: 2-Year warranty

Note

  • Mounting panel: Pick up a universal mounting panel to give your installation a professional look! 331-TPSI-001 - sold separately
  • Installation kit: 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?





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.

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

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

Installation Details RED53CR Installation instructions



Customer Satisfaction Score:

Ratings & Reviews

4.8

6855 reviews
5 Stars
(5812)
4 Stars
(614)
3 Stars
(140)
2 Stars
(97)
1 Star
(192)
Review Sort Icon
by:
2022 Subaru Outback Wagon
Installed it on my 2022 Subaru Outback Wilderness. Ordered this without the harness so had to order that separately. I think the RED52VR is what I should have ordered to include the harness. Did not like the access and the very small wire gauge on the brake pedal the instructions said to tap into so when running the wire from the 7 pin kit ETBC7 from the back of the car I ran a 3rd wire which I tapped into the brake signal going to the factory 4 pin control box in the spare tire well. I ran the wires up underside the driver side and up through the floor by the drive door rather than into the engine bay. Found a neat location to mount the controller and ground wire. Installed the control switch after drilling and dremelling the blank as shown in the great video etrailer has. Unit calibrated and worked just as advertised. Been on short test run. Need a longer trip to experiment with the brake level setting.
Colin profile picture

Colin

4/22/2026

This has been working perfectly for me. Only issue I had was where I mounted the switch it could get bumped by my knee getting out the car. I 3D printed a small piece to prevent that.

by:
2025 Nissan Frontier
Research torpor liberty brake controller and custom harness fit my 2026 Nissan Frontier perfectly. It all looks and performs great. I chose to use one of the stock plugs in my dash just left of the steering wheel. I removed it and cut it to fit the control knob (as shown in e-trailer video) and it appears to be factory installed. It does take some time to cut and fit but is do-able. Worst case scenario I would have ordered a plug from e-trailer but didn’t need to. Great product, I will definitely order from them again!
by:
2024 Nissan frontier I chose to install this in one of the blank plates that was for accessories it was a little difficult to get the plate out and after much use of a dremel tool was able to cut away the backing of the blank off plate to accommodate the control knob, I also had to cut away the accessories box inside the dash as the control knob would not fit due to length. This system on my application does not respond unless plugged into the trailer which is fine Over all I like the little knob and it appears almost like a stock Nissan part , so that’s nice.
Jim profile picture

Jim

4/9/2026

1 year later this product is still performing as new no issues

by:
Jeep Liberty
The Redarc Liberty was exactly what I wanted for my ‘20 Ridgeline. I ordered the custom pigtail and mounted everything behind the dash panel on the left side of the steering wheel. There was a blank switch cover available on the dash panel and I cut away the webbing on the back side of it (very soft plastic, Swiss Army knife) which allowed the control switch to fit right in, between the retaining clips of the blank. The drill bit sizes indicated in the instructions were not big enough for the control knob and plastic bezel so I just increased the bit sizes until the holes were big enough. Honda provided a pigtail with bare ends; I didn’t want to crimp any wires. Honda also said to put their provided fuse in slot 3 in the under hood aux fuse box; the fuse was the wrong type and there was already a 20a fuse in the appropriate slot. My Honda service tech advised Honda usually includes the wrong style of fuse and also usually installs the right one anyway. Go figure. I finished the install the night bf I picked up my new TT; took about 3 hours. It wasn't difficult but I’m pretty OCD. The most work involved routing the wires so as to avoid pinching or bending them too severely. I set the control on 5, tested it with the trailer hooked up in the sales lot and bumped it up to 6. I never felt the trailer on braking at all on the way home. Very smooth and I like the fact that it looks like a factory install. I couldn’t be happier with this controller. E-trailer’s video for the install was a great help, although I mounted the control box in a slightly different spot. This is my second purchase of towing accessories from E-trailer and I am pleased with the service and pricing both times.
by:
Its simple and fits in the dash like it should be there. It controls the trailer as it should. it only lights up when the trailer is connected so you don't see any annoying light during normal driving. I would recommend, it has worked for me. installed in a 2016 Jeep Grand Cherokee
Gwendolyn Y. profile picture
Etrailer Expert

Gwendolyn Y.

4/9/2025

The Redarc looks great in your Jeep, Kent! What kind of trailer are you towing?

Kent profile picture

Kent

4/10/2026

It has now been a year since I installed the brake control. I’m not a daily user, however every time I pull the trailer the controller works flawlessly and it’s convenient.

by:
Found a great bracket location to the left of steering column. Vertical plate with a lip on which the unit can sit. Zip ties on multiple corners did the trick. Tricky to get all the webbing out of my panel's blank plug and drilling neatly...Big hole in center needs to be more like 7/16ths than 3/8ths for the nut to go in easily. I ended up not even using the little white plastic bezel ring behind the knob.
James M. profile picture

James M.

10/26/2025

Better than my old brake controller that was screwed into the bottom of the dash

by:
This was easy to install. It would have been easier if I had purchased the dashboard accessory panel plug made for the brake controller. Instead, I use the one I removed from the truck console. It took me a while to get it to work - the etrailer video on the controller installation explains how to make it fit. It wasn't bad, but it did involve a little more work.
by:
Install was straight forward and really easy. I was looking for something that looked factory installed in the truck and this was perfect. I haven’t towed with it yet but it looks great. I will update this again once I tow with it.
Lazer S. profile picture
Etrailer Expert

Lazer S.

3/10/2026

Glad the install was nice and easy, Christine! It definitely looks factory as I don't think I would have seen it if I didn't know what I was looking at! ^___^ What did you install this in? I can sometimes recognize the dash, but I couldn't in this case.

by:
The brake controller works as advertised, but the 5 Star review is for the entire process: I was able to watch their installation video for my specific vehicle (2025 Nissan Frontier) and feel confident in the installation, then the website was easy to use and delivery was on time. I had no issues installing it on my truck and it looks factory installed instead of having one bolted to the bottom of my dash.
Jerry B. profile picture
Etrailer Expert

Jerry B.

9/5/2026

That's really awesome to hear. What are you planning to pull with your Frontier?

by:
2026 Nissan Frontier
Very slick integration with the Nissan Frontier truck. I just got it so I don't have a lot of use yet, but way better than a knee knocker.
by:
Jeep Liberty
I purchased the Redarc Liberty brake controller because I couldn’t find a place to mount my Tekonsha where I wouldn’t bash a knee or shin on it or cover an airbag.
So far, I’m very happy with the Redarc Liberty brake controller; although, I haven’t used it for towing yet, and I’m not sure it is operating properly. Apparently, I should have blue lights while it is learning which way the control unit is oriented but I don’t have blue lights.
Anyway, let me share information on the installation. I purchased the wiring harness for my vehicle, which I highly recommend as it was same cost as the universal harness, and a big time saver. I did not buy the blank switch panel for the switch installation as another reviewer stated he was able to modify the original switch blank. Big mistake, I highly recommend buying the appropriate switch panel for your vehicle. My Toyota blank switch panel was excessively complicated so I had to saw and melt a pile of plastic (see the picture) out of it without damaging the visible portion or the clips which hold it in.
Finding a suitable location to secure the controller up under the dash is a challenge with modern cars. After removing two pieces of plastic trim, I did manage to pull the panel below the steering column far enough out to complete the install. The unit it does look good. Very clean.
We’ll be towing the big trailer next week so I hope it works.
Ken profile picture

Ken

6/6/2025

Overall the Redarc Liberty brake controller works well. Ive only had to stop hard once and Im happy to report I had no sway or misbehaving. I have managed to inadvertently brush the sensitivity control knob, decreasing the sensitivity. Just follow your departure checklist which includes checking the brake sensitivity and you will be fine. My only complaint is the illuminated dial. It just isnt bright enough, or the numbers arent bold or big enough, its hard to see what the sensitivity is set at without getting your face right up next to it. I would recommend this unit to a friend.

by:
Awesome brake controller kit. Easy install, with a great DIY video. Once installed it was a breeze to program. I highly recommend the RedArc Tow Liberty Pro to anyone looking for a brake controller that is hidden and out of the way.
Kate F. profile picture
Etrailer Expert

Kate F.

10/13/2026

Install looks great Johnny! Redarc is definitely my go to for brake controllers. What are you towing that you needed to add the controller?

Johnny profile picture

Johnny

10/13/2026

@KateF I am towing a 12' offroad square back trailer.
by:
Vehicle: 2012 Nissan Xterra PRO4-X

I haven't had a chance to use the device yet as I'm waiting on my trailer to arrive. However, the product seems very high quality, the install was super simple, and I did have a chance to test the device, remote control, and 7-pin and everything appears to be working correctly. The provided harness for the Nissan was plug-n-play and all tests were successful. The instructions come with a great 2D drawing of the hole dimensions and spacing so drilling a rocker plate is super easy.

The device wires into the existing plug under the steering column and there is ample space on the left side of the foot well to mount it flush against the body panel. Just remove the lower dash to pop out the rocker blank. Drill the rocker plate and fit the knob and reinstall the rocker plate and dash. Affix the controller module to the foot well steel wall. Connect both wire. And then you are good to go. Cables have about an extra 8-12" of unused length if you wanted to locate it elsewhere but I can't imagine a reason to do so.
Gwendolyn Y. profile picture
Etrailer Expert

Gwendolyn Y.

7/2/2025

Everything looks great on your dash, Dustin! When is your trailer arriving?

by:
Easy install. The specific Nissan harness help make it that much more professional install.0
by:
The perfect brake controller for my Nissan truck. Wire harness plugged right in. entire install less than an hour. This is the way to go.
Jc profile picture

Jc

6/20/2026

Since then I got another Frontier and another Redarc Liberty!

by:
2015 Infiniti QX60
Controller was exactly as described and installation was simple on my 2015 Infiniti QX60. I had one (1) blank panel insert and the final install looked factory installed. A Great Addition to my SUV in towing my trailer legally.
by:
2025 Nissan Frontier
Installed on my new 25 Frontier. Install took less than an hour. Since mine is a 4x2, I used the 4wd switch blank so additional switch mounts were not needed. I installed the same controller on my ladt track, also a Frontier, and did a great job with our 20 foot camper. Highly recommended.
Heather A. profile picture
Etrailer Expert

Heather A.

4/11/2026

Using that 4WD switch blank is such a good move, it looks like it came that way from the factory. The install looks awesome Joe. What camper are you pulling?

by:
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.
Jerry profile picture

Jerry

4/11/2025

Outstanding! 5000 miles and has not. failed me once. I have found setting the controller just under halfway 4 works best for highway and around town. Bumping it to 5-6 is wonderful on mountain passes and keeps both the truck and trailer easy to control. Great product! If I had done just a little more research I would have discovered e-trailer even has a harness for my application and would not built my own. Highly recommend for a Tacoma!

Bryce D. profile picture
Etrailer Expert

Bryce D.

4/11/2025

@Jerry Glad you're loving it Jerry!
by:
2023 Nissan Frontier
Although I have no foreseeable plans to tow a trailer, my Nissan P4X came with the towing package that doesn't include a brake controller. I chose this for the clean look and because of limited space in the cab, plus it comes highly recommended by other Frontier owners. I installed the control unit behind the driver's side kick panel. The instructions were some of the most well written ones I've seen in a long time. Took me just over two hours and much of that was getting the switch to fit just right. If it does everything they claim it will be probably the most advanced unit I've had.
Gwendolyn Y. profile picture
Etrailer Expert

Gwendolyn Y.

5/14/2025

You definitely found the perfect spot for the knob, Michael! If you ever do need to tow a trailer, you will be more than ready to!

by:
The break controller works great...no problems. I've since sold the single axle trailer and purchased two more, one single axle new and one double axle used. I plan on stripping the cargo trailer and replacing the breaks and anything else that needs it for the suspension, creating a type of mini-home or tiny home on it. Thanks for reaching out. I will use your services for this new build. Thank you and keep up the good work!
Brooke M. profile picture
Etrailer Expert

Brooke M.

4/23/2025

That is super exciting about the mini-home! I wish you the best of luck with the overhaul - if you feel like sending in some pictures when you're done, we'd love to see them :)

Randy profile picture

Randy

4/23/2026

Great! It is simple to operate and responds appropriately. Thank you.

Lazer S. profile picture
Etrailer Expert

Lazer S.

4/23/2026

@Randy Glad it's still working for you! These are my favorite controllers on the market as they work extremely well and they look basically stock once they are installed. Probably the best ones currently on the market. How did your mini/tiny home build go?
by:
No issues at all. The install looks pretty good. This was on a 2015 Infiniti QX80.
by:
I didn't realize when I bought a new Frontier truck that I could no longer use traditional underdash brake controllers like I had for past 40 years. This meant that this Redarc was one of only a few brake controllers that I could use.
Mounting it was a bit tricky and the supplied instructions weren't good. Fortunately others before me had figured it out and posted better step by step instructions with pictures.
The brake controller itself works very well and provides the best and smoothest braking control I've ever experienced with my twin axle camper on multiple trips this last summer including one trip of over 1,000 miles around the UP of MI and northern WI.
Chris profile picture

Chris

1/11/2026

The Redarc controller continue to impress me. This last year we went through NYS and the Adirondack Mountains where there are some long and serious downgrades and we also drove in a lot of stop &amp go traffic and I was always able to get the appropriate level of braking without locking the wheels. This is the best brake controller Ive ever used.

by:
2026 Nissan Frontier
Everything connected just right. The trailer brake worked I just need to order a mounting panel for my dash.

Chris C
by:
2023 Nissan Pathfinder
Worked great my first time towing. Watched the video to install the controller in a Nissan Pathfinder a couple of times and the install was just as shown. It is scary drilling a hole into the console but it worked out great! The custom harness for the Pathfinder was a great fit. Thanks for the support and videos, they really helped reduce the anxiety of installing the controller myself.
by:
2025 Nissan Frontier
Watched videos, read directions take your time test fit where you want it to go. I used screws for install ,then zip tied wiring. You only get one blue blink until you actually install on trailer with brakes
Brooke M. profile picture
Etrailer Expert

Brooke M.

7/2/2025

Looks awesome! And that's a nice note about the light to keep in mind, too :)

25
6855
true
Show More Reviews

See what our Experts say about this Redarc Trailer Brake Controller


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Joshua S
Video Edited:
Joshua S
Employee Dustin K
Video Edited:
Dustin K
Employee Jonathan Y
Video Edited:
Jonathan Y
Employee John S
Video Edited:
John S
Employee Wilson B
Updated by:
Wilson B
Employee Alex H
Updated by:
Alex H
Employee Michael B
Updated by:
Michael B
Employee Kevin C
Test Fit:
Kevin C
Employee Bradley B
Test Fit:
Bradley B
Employee Scott A
Test Fit:
Scott A
Employee Thomas T
Video by:
Thomas T
Employee Amanda K
Written by:
Amanda K

At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.


Product Experts Available Now!
Call 1-800-940-8924