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Most brake controllers stick out and take up knee room, but this one hides the main unit behind the dash. All you see is a small knob on the console—just 1-7/8" long and 9/16" wide. It looks like a factory switch and keeps your cab clean and open. That tiny knob handles everything: adjusting brake power, hitting manual override, and showing color-coded alerts as you drive.
This controller uses an internal 3-axis accelerometer to sense how hard you’re slowing down and applies the trailer brakes in sync with your own. It works with trailers up to 2 axles using electric or electric-over-hydraulic brakes. Output ranges from 9V–16V with 18 amps continuous current, giving consistent braking that feels natural and keeps wear even across your setup.
No splicing or guesswork here. The included plug-in harness connects directly between your vehicle wiring and the controller for a quick setup. The main unit can mount almost anywhere within reach of the 3' cable to the knob—tucked behind trim, under panels, or alongside existing wiring. A universal mounting panel gives it a professional, built-in look once installed.
On first use, the unit calibrates itself automatically while you drive—no tools or special steps required. LED colors guide you through setup: flashing green/blue while learning and solid blue when complete. After that, it’s always ready; recalibration happens automatically when needed without interrupting your trip.
Tested to meet strict global safety regulations, this controller delivers dependable braking performance mile after mile. With a 12V DC system and 2-year warranty backing it up, it’s built for long-term reliability wherever you tow.
Customer Satisfaction Score:
97% were satisfied with this product
3% of customers were not satisfied
Ratings & Reviews
Gwendolyn Y.
4/9/2025
The Redarc looks great in your Jeep, Kent! What kind of trailer are you towing?
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.
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.
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.
4/11/2025
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
4/23/2026
Great! It is simple to operate and responds appropriately. Thank you.
Lazer S.
4/23/2026
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 & 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.
Robin
2/27/2026
1 year update: Took seven trips with the camper and the brake controller is working perfectly. I am so glad I installed this controller, rather than a bulky controller. Very highly recommend!
Chuck
2/14/2026
Still working great, no complaints.
Kenneth
7/19/2022
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.
Simon F.
1/4/2026
Works flawlessly. Had a minor installation issue. Research technical support was super in resolving the issue
Charles
4/26/2024
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.
Bobby Q.
7/26/2023
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.
Scott
9/25/2025
One year later and no issues!
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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.