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  1. Trailer Brake Controller
  2. Redarc
  3. Electric
  4. Electric over Hydraulic
  5. Proportional Controller
  6. Up to 3 Axles
THIS ITEM IS NOT A FIT FOR
1962 Chrysler Newport
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Redarc

Redarc Tow-Pro Elite Brake Controller w/ Custom Harness - Dash Knob - Off-Road Mode - Up to 3 Axles

Part Number: RED42CR
In Stock
$290.00
Trailer Brake Controller
Not Confirmed to Fit

1962 Chrysler Newport

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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. Its unique off-roading mode helps you handle rough conditions, so get out there and get towing. Great Prices for the best trailer brake controller from Redarc. Redarc Tow-Pro Elite Brake Controller w/ Custom Harness - Dash Knob - Off-Road Mode - Up to 3 Axles part number RED42CR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Redarc Trailer Brake Controller - RED42CR

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 tow vehicle.
  • Confident handling off-road: Off-road mode applies preset braking power for better control on rough terrain.
  • Clean, factory-style look: Compact dash knob with hidden main unit keeps your cab uncluttered.
  • Quick, plug-and-play setup: Custom harness connects directly without splicing wires.
  • Reliable braking power: Handles up to 3 axles, 25 amps continuous, and 9–32V systems.

Features to know about

Saves Space with Compact Knob: Mounts Behind the Dash

Most brake controllers stick out and take up knee room, but this one tucks the main unit behind the dash. All you see is a small knob on the console, just 9/16" wide and 1-7/8" long. It blends right into your interior and looks like a factory switch. That single knob handles everything—adjusting brake power, hitting manual override, and showing color-coded alerts through its LED light. The included universal panel gives the install a clean finish that doesn’t clutter your dash.

Maintains Control on Rough Terrain: Tow-Pro Elite Off-Road Mode

Sand, mud, or steep descents can make towing unpredictable. With off-road mode, you set a preset braking level for your trailer, independent of how hard you’re braking in your tow vehicle. Dial it down on soft terrain to keep your trailer from digging in or crank it up during steep descents to stop the trailer from pushing forward. A quick double tap on the knob activates the mode, and the LED glows green when it’s on.

Close-up of Redarc Tow-Pro Elite brake controller knob showing green LED light indicating off-road mode activation

Delivers Smooth, Confident Stops: Proportional Brake Control

The Tow-Pro Elite’s proportional control uses an internal 3-axis accelerometer to match your trailer braking with your own. Lightly step on your brakes and the trailer eases in; hit them harder and the trailer follows suit. It works with trailers that have 1 to 3 axles (6 brake assemblies) and supports both electric and electric-over-hydraulic brakes. The result is smooth stops, less wear on tires and pads, and better control when towing heavy loads.

Installs Fast with Plug-In Harness: Flexible Mounting Options

Wiring a brake controller doesn’t have to mean splicing wires under the dash. This setup includes a plug-in harness that connects directly for a simple install. The compact main unit mounts out of sight using screws, tape, or zip ties anywhere within the 3-foot cable range from the control knob. It works with both 12-volt and 24-volt systems, draws up to 25 amps continuous within its 9V–32V output range, and stays calibrated automatically once installed.

Redarc Tow-Pro Elite dash-mounted control knob installed in vehicle dashboard

Installation location of Redarc Tow-Pro Elite control knob in 2023 Jeep Wrangler 4xe dashboard

Redarc Tow-Pro Elite adapter and custom wiring harness for easy vehicle connection

Built Tough for Real-World Use: Meets UNECE R21 and FMVSS 201 Standards

Safety standards matter when you’re towing through tough conditions. The Tow-Pro Elite meets or exceeds UNECE R21 and FMVSS 201 regulations for safety and durability. It’s designed to handle long hauls, heavy trailers, and challenging environments without losing precision or reliability. That’s solid peace of mind every time you hook up and head out.

Specs

Application

  • Application: trailers with 1 to 3 axles (6 brake assemblies)
  • Compatible with: electric or electric-over-hydraulic trailer brakes
  • Works with: 12-volt and 24-volt vehicle electrical systems

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 knob: 1-1/4"

Electrical

  • Output voltage range: 9V - 32V
  • Output current rating: 25 amps continuous
  • Maximum charging voltage: 12V DC

Redarc Tow-Pro Elite 12-volt wiring diagram showing connection layout and wire color coding

Redarc Tow-Pro Elite 24-volt wiring diagram showing detailed electrical connections

Warranty

  • Warranty: 2-Year warranty

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.

CIKTP-NA-001 Redarc Tow-Pro Elite Trailer Brake Controller - Dash Mounted Knob - Hidden - Proportional Brake Controller - Redarc Wiring Harness for Tow Pro Electric Brake Controllers - Plug and Play

Installation Details RED42CR Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:

Ratings & Reviews

4.8

1747 reviews
5 Stars
(1527)
4 Stars
(149)
3 Stars
(28)
2 Stars
(12)
1 Star
(31)
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by:
Good customer service.
But I have not put the part I ordered in as of yet. But so far so good, we're faculty, already in the venue.
by:
ITS A NICE PACKAGE BUT IF I HAD TO DO IT AGAIN I WOULD BUY Tekonsha. have had great luck with those through the years. y'all did an excellent job in getting me what i needed and had great customer service. just not impressed with the all plastic Redarc
by:
toyota Tacoma
Everything that you need for a 21 Tacoma is in the box. Easy install just a little bit fidgety to attach the control unit under the dash but no bigee. Excellent shipping which is what I needed and it was quick, so was totally worth the shipping cost.
by:
Toyota Tundra
Worked as expected. Easy installation on Tundra SR 2022+.
by:
The product itself is excellent. The shipping was on time as expected. We will see what results there are in the future, but on the part of Etrailer, everything was very good.
by:
by:
by:
2019 Toyota Tacoma
by:
2019 Dodge Durango
I installed on my 2019 durango without factory tow package, instructions were straight forward, managed to place in center consol, wires to battery. Seen videos sending wires to engine compartment. Worked out with the wires I had and able to place fuse as well. The brake light cable, had a little challenge, since car uses same light for turn signal, it gave intermittent signal, so I wired it to the center rear/3rd brake light. In all it worked amd made it easier to slow down, especially when I was towing nearly 6k. I didn't feel the push of the trailer. Don't have pics of the install, just the final location of my control.
Kate F. profile picture
Etrailer Expert

Kate F.

6/5/2026

Thanks for your review, Eric! It sounds like the installation took a little creativity, but I'm glad the videos and instructions helped you get everything wired up and working properly on your Durango. Thanks for including the photo of your controller setup, too. What are you towing with your Durango?

by:
2015 Jeep Grand Cherokee
Amazing Brake Controller- I pull a 6000lbs Rockwood trailer behind my 2015 Grand Cherokee and this controller has saved my tail a few times. Not only has the emergency feature pulled my trailer straight in a few clincher moments with wind, but the proportioning is truly amazing. Multiple times over the 4 years I have used it, and it has worked flawlessly in emergency situations. During my 12,000 plus miles I have never felt the trailer pushing me during braking, it actually feels like i have nothing behind me. Loaded it weighs in at 6800lbs. Thank you for designing an awesome product.
Heather A. profile picture
Etrailer Expert

Heather A.

5/8/2026

That’s awesome to hear, and that setup looks great too. That Mini Lite behind your Grand Cherokee is a really clean combo. I love hearing how it’s actually performed for you out on the road, especially in those “oh man” moments where things could’ve gone sideways. 12,000 miles without issues says a lot. Really appreciate you taking the time to share that, and the photo too. What kind of trips are you usually taking with it, more long hauls or just getting out on the weekends?

by:
2008 Toyota FJ Cruiser
Great product. Easy to install, especially if you already have a brake controller. The control unit is easy to mount almost anywhere since it automatically detects its orientation. The calibration process is automatic, you just drive and make a few stops (and calibration happens even when the trailer is not connected). Then it is a matter of dialing in the maximum braking force. The progressive action is smooth and stopping is jerk-free. Be sure to get the vehicle-specific mounting panel if one is available. Otherwise a generic panel is included. Attached is a photo of installation in a Toyota FJ Cruiser -- not much to see, as the control box is invisible under the dash.
Kate F. profile picture
Etrailer Expert

Kate F.

5/6/2026

Love this, sounds like you and your brake controller are already best friends Robert =) We’re glad the install treated you well, especially that “set it and forget it” calibration. Hard to beat. And you’re absolutely right about the mounting panel tip. That’s one of those little details that makes the whole setup look factory clean. Also appreciate you calling out the smooth, jerk free braking. That’s exactly what we like to hear. Safe stops mean happy towing.

by:
After reviewing a lot of controllers I chose this one.
Mike L. profile picture
Etrailer Expert

Mike L.

8/11/2026

Great choice Lynn, thanks for the awesome photos!

by:
2015 Honda Pilot
Installation was as described in the Colorado video. My 2015 4x4 dash required a different location than where the knob is located in the video( where the 4x4 knob is ). The dial knob just fits inside the upper clips for the credit card slot. I used the left side for better visibility. I drilled a pilot hole and then slowly enlarged it, dragging it as needed to keep it centered under the dash clip. You will understand when you remove the card slot. Remove the lower dash to get to a hidden screw, then the card holder pops straight out.
Jeff profile picture

Jeff

10/30/2025

It works great with no issues. I have a 2015 Chevy Colorado though, not a Honda pilot as the post says.

Jon G. profile picture
Etrailer Expert

Jon G.

10/31/2025

@Jeff Glad to hear it's working well for you! I've sent in an update to have that vehicle info changed - thanks for reaching out about it!
by:
Mercedes-Benz Sprinter
The hardest part of the install was routing the cabling the way I wanted from under the driver seat through the battery box and up under the dash. Install very strait forward. On the Mercedes Sprinter chassis the controller does not receive any power unless the trailer is connected, so performing the "active calibration" can only be done with the trailer connected.
by:
2020 Acura MDX
This worked perfect in our 2020 Acura MDX. Love how it looks and operates. I removed the center council (see link to video on how to below) and mounted everything in there.
The control knob looks great and is out of the way. I removed the 12 volt charger port and put the knob in its place. The only catch was it was not easy to find the fuse for the brake controller. After research and trial and error, I found the fuse was #17 in the rear fuse box. I appreciate the great service and support from etrailer.
John F. profile picture

John F.

8/11/2025

After a year of use, everything is working perfectly. Very happy with the product, service and savings!

by:
2016 Dodge Ram Pickup
I have been pleased with the Redarc controller. I like that it's hidden away from sight except for the knob. It works as advertised with no issues whatsoever. I tow a dump trailer rated for 16,000 lbs with an 06 ram diesel and the brake controller makes it so much easier on the vehicle brakes. I highly recommend.
David profile picture

David

6/19/2026

Still working great after one year. Would highly recommend the Redarc controller.

Jerry B. profile picture
Etrailer Expert

Jerry B.

6/19/2026

@David Great to hear that's working for you! What kind of trailer are you using with the brake controller?
by:
2010 Volkswagen Touareg
3 issues....
1) in the Redarc box, (which seemed closed (but not sealed) a few of the small parts were floating around in the shipping box. But I found everything that I needed...
2) The supplied wiring harness (VW Touareg to Brake controller) did not just plug into the Redarc controller. I Had to cut the controller end off the supplied harness and splice to the pigtail from the Redarc controller. Luckly this job does not intimidate me, but I did believe I was purchasing a plug & Play. Perhaps this could be noted in the website page for this bundle.

3) as in the attached Photo, I inserted and fastened the Remote Head assembly as it is shown in the Diagram 3. The two small flanges are at the TOP of the diagram and the larger flanges and more body of the assembly is at the bottom in the diagram. After all was put together and I installed the knob, this is upside down. The Number 5 is at the top of the know, not the 0 and 10.


On the great side, the small know on the controller is a perfect fit for a place on the Touareg dashboard. Looks like a factory fit.
by:
2017 Infiniti QX80
Will update review after trying the controller out but install and packaging were great. Very easy to install. The dial/knob looks very minimal and cool. Found an empty accessory slot in the dash that was very easy to drill out. The device itself is small enough to tuck behind the knee bolster. etrailer sent out the jumper harness that plugged right into the factory provided connector. It took maybe 30 minutes, very awesome. Will update when we tow in a couple weeks.
Brooke M. profile picture
Etrailer Expert

Brooke M.

6/4/2025

Glad to hear that so far everything has been good. Install looks factory :) Definitely let us know what you think once you've had a chance to try it out for real! Where are you headed for your trip?

by:
2007 toyota Tacoma
Installed in my 2007 Tacoma super easy if you're already set up for towing and works great with my new trailer. Thanks again etrailer for making everything easy and professional.
by:
Easy to set mount, set-up and go to working. I like the simplicity of the controller. The only thing you see is the control knob.
by:
toyota Sienna
Very involved installation ~6hr in my Toyota Sienna, but there was an excellent video available from the fine folks at e-trailer, which made it easily doable.
by:
Super easy to install took.me about 45 mins to an hour because i had all the tools already.
Attached trailer wires to truck this.morning and it seems to be reading the trailer already.
Got to test out the proportional and the manual features. Now to test drive on raod but so far id recomend this over the tekonsha wireless controll. I third the price and probably way better.
by:
Not supplying the comparable connector to connect to my towing package on the Cayenne is a major issue. The install was not as simple as you advertise. Very disappointed.
by:
really like the product and how I was able to mount it into factory spot on my Toyota with a separately sold adapter. Added the factory harness adapter so everything was truly plug and play. first haul of travel trailer went really well.
by:
2024 Toyota 4Runner
Easy installation and great on road performance. Clean in cabin appearance with a single control knob as the only visible component. This makes old school brake controllers obsolete.
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See what our Experts say about this Redarc Trailer Brake Controller

  • Which is Better for 2023 Toyota Tacoma Redarc Tow Pro Liberty or Elite
    Hey Rob, yes the Redarc Tow Pro Liberty part # RED72CR that fits your 2023 Toyota Tacoma TRD would work great for you. Normally a proportional brake controller is the absolute best for on-road applications but isn't ideal in off-road conditions but what you mentioned would not be quite off-road enough to require a time-delayed feature like what the # RED42CR that also fits your truck provides. The reason being that proportional brake controllers get confused by the inertia changes from...
    view full answer...
  • Differences Between the Redarc Tow Pro Trail and Elite
    Norm, thanks for hanging out! Along with one fitting different brands of trucks the Trail and Elite are also different. The Tow Pro Trail # RED94UR is designed to be used primarily off-road, specifically engineered and tested for off-road adventures. The Tow-Pro Trail helps with challenging conditions like steep descents, mud, and sand, as well as providing smooth, safe braking for everyday hauling. The Elite # RED42CR also has off-road capabilities, but I'd the Trail is going to be...
    view full answer...
  • What Are the Differences Between the Tekonsha Tow Pro Elite and the Tow Pro Trail
    Hey Kyle, great question! I did some research, and it looks like the two brake controllers are practically the same. They both have plug and play installs, they both have SwayStop Control, and they both have two braking modes. The only difference is that the Tow Pro Trail is specifically designed to be used off-road, and the Tow Pro Elite is not. So I'd say if you're planning on being off-road a lot, then the Tow Pro Trail is what I'd use, otherwise the Tow Por elite is the way. If you...
    view full answer...
  • Which Redarc Brake Controller Fits A 2021 Chevy Silverado 1500?
    Good question, John! Though Redarc does have a verified fit for your 2021 Chevy Silverado 1500, the one you were looking at is actually for a Toyota Tundra or Tacoma. This would be why our site is saying it doesn't fit. For your truck, you will want the # RED65CR. This includes the Redarc Tow-Pro Elite Brake Controller and the vehicle specific wiring harness to plug directly into the port on your truck. Do you have a location already in mind for where you will be mounting the knob?
    view full answer...
  • Parts Needed to Install Redarc Tow-Pro Elite on 2015 Toyota Tundra
    Hey Harry! The # RED63RR is just the Redarc Tow-Pro Elite with a Tekonsha adapter that would allow you to use a separate Tekonsha wiring harness on your 2015 Tundra. Are the hitch and 7-way wiring factory? If so, it is safe to assume you have the tow package meaning the Redarc Tow-Pro Elite Brake Controller w/ Custom Harness # RED42CR is the part you need. This comes with the brake controller along with the custom wiring harness for the factory port under your dash. If you have a blank...
    view full answer...
  • Will Adding An Aftermarket Brake Controller To A 2020 Toyota Tundra Increase The Stopping Power?
    Hey Tom, thanks for reaching out. If your factory controller is truly maxed out, it should already be sending close to full voltage back to the trailer brakes, so swapping to the Redarc won’t increase the raw output voltage itself. The # RED42CR does bypass the factory controller completely, so it would take over all braking control, but it won’t magically add more “power” if the limitation is somewhere else in the system. What it can do is give you much better control and feel, since...
    view full answer...
  • Is The Other End Of The Redarc Custom Harness RED42CR A Molex Connector?
    Hey Brian, thanks for reaching out. No, the custom pigtail that comes with the Redarc Tow-Pro Elite Brake Controller # RED42CR is not a Molex connector. It is a custom plug for the Toyota OEM factory brake controller connection. It does look similar to a Molex connector but they are not the same thing. That particular plug will match up with the factory brake controller port on a 2016-2023 Tacoma and a 2015-2023 Tundra with the factory tow package. If you’re asking because you want to extend,...
    view full answer...
  • Differences Between The Redarc Brake Controller Line
    Hi Rick! I can definitely help with that and I have each broken down below: REDARC Tow-Pro Liberty # RED72CR -1 to 2 axles -SwayStop helps when trailer starts to sway REDARC Tow-Pro Elite # RED42CR -1 to 3 axles -Everyday and Off-Road modes -SwayStop helps when trailer starts to sway REDARC Tow-Pro Trail # RED64UR -1 to 3 axles -Everyday and Off-Road modes -SwayStop helps when trailer starts to sway -Off-Road oriented REDARC Tow-Pro Link # RED57AR -1 to 4 axles -Plugs into USCAR connection -Everyday...
    view full answer...

Do you have a question about this Trailer Brake Controller?


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Dustin K
Video Edited:
Dustin K
Employee Wilson B
Updated by:
Wilson B
Employee Andy C
Installed by:
Andy C
Employee Amanda K
Written by:
Amanda K

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