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Universal Mounting Panel for Redarc Tow-Pro Trailer Brake Controller Control Knob

Universal Mounting Panel for Redarc Tow-Pro Trailer Brake Controller Control Knob

Item # 331-TPSI-001
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Mounting panel creates a factory look for your vehicle's dash when you install the control knob from your Tow-Pro brake controller. Works on dash panels that are up to 9/32" thick. Drilling template and self-adhesive tape included. 1-800-940-8924 to order Redarc accessories and parts part number 331-TPSI-001 or order online at Free expert support on all Redarc products. Great prices and Fastest Shipping for Universal Mounting Panel for Redarc Tow-Pro Trailer Brake Controller Control Knob. Accessories and Parts reviews from real customers.
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Redarc Accessories and Parts - 331-TPSI-001

  • Trailer Brake Controller
  • Control Knob Mounting Panel
  • Redarc
  • Universal

Mounting panel creates a factory look for your vehicle's dash when you install the control knob from your Tow-Pro brake controller. Works on dash panels that are up to 9/32" thick. Drilling template and self-adhesive tape included.


  • Mounting panel creates a factory look for your installed Tow-Pro Elite (331-EBRH-ACCV2) or Liberty (RED24FR) electric brake controller
    • Provides clean backdrop for control knob that installs in your dash or console
  • Drilling template ensures accurate drilling and mounting of unit in selected location
  • Gaskets ensure proper installation on curved surfaces
  • 2-Year warranty

TPSI-001 Universal Switch Insert Panel for REDARC Tow Pro Trailer Brake Controller Remote Knob

Installation Details 331-TPSI-001 Installation instructions

California residents: click here

Video of Universal Mounting Panel for Redarc Tow-Pro Trailer Brake Controller Control Knob

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Redarc Tow-Pro Trailer Brake Controller Control Knob Universal Mounting Panel Review

Hi there do-it-yourself-ers. Today we're gonna be taking a look at, and we're also gonna show you how to install REDARC's panel mount for the button for the Tow-Pro Elite or for the Tow-Pro Liberty. The one I'm holding in my hand here, this is the Tow-Pro Elite Switch. It's a little bit smaller than the Liberty's. Here's the Liberty switch. So you can see that the Elite here definitely is gonna have a smaller footprint, but both of these are gonna work with our mount there.

So we're gonna start with the Elite, we'll just go ahead and show you that here real quick. We're gonna unscrew the nut when installing the Elite in there, you do want the thicker part here, down towards the bottom, and that'll just slide in the back there, we'll put our nut on there and secure it down. And it screws in very easily into this mounting location which is one of the reasons I like it. The Tow-Pro Elite here, the nut is a plastic nut so it's actually strips and breaks fairly easily. So having a nice mounting location that it threads into easily can help you prevent you from cross threading it or damaging that nut cause it does break pretty easy.

And after that we're just gonna install our knob, we'll turn it fully counterclockwise, line the zero up at the top and slide that into place. And then just verify your button clicks. And with this mounting location here, if you got the nut tightened down, and you can cross thread it, everything should work out very well. I like this mounting location, this mounting button, because sometimes your panels here, depending on their thickness, you may not be able to press the button if the panel is too thick. So this way if we use this mounting location here it's already gonna give us a preset mounting thickness here on the button mount so you know it's gonna work no matter what.

So I do like that, that kind of turns any panel into a usable panel, even if it may be quite a thick paneling. So now we're gonna go ahead and pull this off of here and then we'll show you the Tow-Pro Liberty's. And for both the Tow-Pro Elite and the Tow-Pro Liberty if you did use a socket, you would use a 12 millimeter socket. I don't necessarily recommend it with these plastic buttons but if you want to just put a little extra little maybe like a 16th of a turn type of thing on there then you would be okay, or for removing it, it works well for removing it. So we're gonna set that aside.

Now we're gonna grab our Tow-Pro Liberty button. The Tow-Pro Liberty's a little bit different than the Tow-Pro Elite you can see its much bigger. We're gonna slide the button off of there. This one does have a chrome nut. It looks like it's made of metal but it's very light and it can be difficult to tell. It kind of feels like it's just a plastic with the chrome coating on it, but it may be like an aluminum or light metal. Now this ring you have here with the Tow-Pro Liberty this is what you would normally use to mount it. You can see it's at the alignment hole at the top for the LED. If you're using the button here we don't want to use this ring. This doesn't really fit in there. So just set that off to the side. That's for if you're doing a bare mount with our Tow-Pro Liberty, the LED indicator is at the top unlike the Tow-Pro Elite where the LED is made into the shaft portion of it. So that little LED at the top needs to line up with that small hole that's at the top of our button there. So we're gonna go ahead and slide that in now, that lines right up on there and we just take our nut and thread it into place. Man, I can't quite get that one all the way snug so we'll grab our 12 millimeter socket and that's as far as I'm gonna tighten it there so we don't wanna over tighten it. So now we're gonna take our knob here just barely push it on there just enough and turn it all the way counterclockwise. Once you've got the knob there, turn fully counterclockwise we're gonna take the button here, put the zero at the top line it up with that little LED indicator push it into place, and again verify you can press the button but that's why this mounts so nice. It should give you the proper depth for our button to press nicely. And it gives us a nice mounting location that almost looks like it's a factory piece that was just supposed to be there. What else is nice about these pieces is while we mounted ours by drilling into the paneling which you can do cause it is a universal mount it is also a knockout replacement. So if you do have some knockouts like some vehicles have like a row buttons in a row and you can knock out one of the blanks if there's not a button there, maybe 'cause there's a certain option the vehicle could come equipped with but they don't have it, you can knock those out and a lot of times this'll slide in place. Now this is a universal one though, so different manufacturers do use slightly different size knockouts with slightly different indentations on them so you may have to modify that hole a little bit in order for this universal one to to fit. We do also have some custom fit knockout REDARC brackets here at etrailer that for these mounting buttons, but it is kind of limited so you just wanna check our fit guide and see if there is one available. If not, then you can use this one here. And that completes our look at REDARC's panel mount for the Tow-Pro Elite or Tow-Pro Liberty button..

Customer Satisfaction Score:

Customer Reviews

Universal Mounting Panel for Redarc Tow-Pro Trailer Brake Controller Control Knob - 331-TPSI-001

Average Customer Rating:  4.6 out of 5 stars   (229 Customer Reviews)

Mounting panel creates a factory look for your vehicle's dash when you install the control knob from your Tow-Pro brake controller. Works on dash panels that are up to 9/32" thick. Drilling template and self-adhesive tape included.


I'm very happy with our Redarc trailer brake controller and the control knob blank for the dash. I installed it all myself in my husband's truck. The installation was pretty easy (except for reaching up under the dash), and the product works very well. It's so nice not to crash my knee into a bulky controller. This one sits nicely behind the dash, secured with industrial velcro. I've recommended it and etrailer to many people. Thanks, etrailer, especially for the encouraging videos that made me try this myself and save a bundle on installation.


Fits perfectly in standard switch enclo sures.



The Redarc controller threw odd error codes that were not in the troubleshooting guide. Redarc customer service in NZ immediately replaced the control unit outside of warranty. They wanted the old unit back to test. The new one continues to operate flawlessly and competently. I would definitely purchase again.


I needed to modify the panel to be able to fit into the slot on my 2022 Honda Passport. I did this by cutting / shaping it using dremel tools. It then fit nicely and looks great.


The panel itself is great. However, the template included on the instruction sheet page is not to scale - it's printed bigger than what it should be. Good thing I measured instead of taking it at face value. Otherwise, my holes would have been too far apart and too big, ruining the dash on my new vehicle. Thus the 2 star rating. Templates are made to be used. It should be either fixed or removed from the package.


If installing in a Subaru ascent button “punch-out” slot, you will need to use a dremel to make it fit and it is easy to mess up so be careful.


Not exactly oem look, but functional and holds the knob for the Redarc brake controller well in a Nissan Pathfinder.


makes the trailer brake controller install look like a factory installation!


Makes the installation look very professional and very close to a factory look.


Works as described and is compatible with my 2010 Toyota FJ cruiser.

Thank you E Trailer


The product was great. Etrailer really needs to use a better delivery service other than snail mail. Customers will pay a little extra to get it from UPS or any other expedited company.


This was so easy to install. Just plug and play. Trailer website states "not confirmed to fit 2023 Honda Ridgeline" But I can tell you it fits and works great. Trailer always has great service and fast shipping. Couldn't be happier.


This didn’t work for me, so it was a waste of time and money

Etrailer Expert

Katrina D.


I am sorry that it didnt work for you. Are you willing to provide some more information on what was not working?


Services fantastic.


Product looks nice and fits the Redarc controller well, but the measurements for the cutout are a little too big, so the part fits loosely.

I did make it work, though, with some electrical tape.

This is in a 2017 Chevy Silverado 1500

Rodney P.


The Redarc brake controller works great. We only use it during the spring-summer-fall camping season, so we haven’t used it since October. We towed our camper a bit over 5,000 lbs loaded all over MN. Never had any trouble stopping. Smooth, even braking. Adjustment is easy. Probably one of the best options for a newer Silverado without the factory controller. I guess if I were to have one complaint, it would be HOW easy it is to change the setting. If anything brushes past the adjustment knob, it will change the position. Only happened one time,and we were parked getting ready to leave a campground. Dial spun from around 4 normal setting up to 10. Made the brakes hit pretty hard…


Purchased a second time for my newer vehicle. Last time I used a dash compartment with a Kydex plate I cut to fit. This time it's snugged into the factory brake controller slot.


I installed the Redarc trailer brake in a 2017 Chevy Colorado. It was an easy install.
This part made for a clean install.



Working like a charm and thrilled with its clean install.


I installed this brake controller in a 2019 GMC Acadia with the factory tow package. Installation was very straight forward and only took about 45 minutes. The hardest part was locating the factory wire harness that ended up being in the front of the center console near the gas pedal. Operation is simple and works very well. This as close to a factory brake controller as you can get. I highly recommend it.


Didn't use this part as the redarc just got Nicely in dash.


Handy little mount - I made a bracket out of a piece of angle aluminum and mounter it on the panel below the steering wheel near my right knee.

Drilling the two holes looks a little tricky, but just take your time and be as precise as possible when determining where to drill the holes. One hole is for the housing/switch itself, and the other (much smaller hole) is for a little extension that keeps the unit from rotating n the larger hole...if that makes sense.


Instructions call for 1" hole to mount this panel, but this mounting base is only 7/8" wide. I should have measured it first, but trusted the instructions. See photo for the result. I suggest installing the controller without using this item. If you do use it, cut a rectangular hole 1" high and a bit under 7/8" wide. Slant the top and bottom slightly with a file, as the mounting clips are not very flexible.


Toyota Tacoma 2022 this plate does’nt fit , you have to modify little bit and put hot clue in back

Heather A.


This switch mounting panel is universal so its not going to be a perfect fit for the Toyota Tacoma. However, we do have the custom fit panel for the 2022 Toyota Tacoma part # 331-TPSI-007.


Worked well for brake controller button. I would suggest better shims for this item. The soft shims are OK but several hard plastic shims matching the holder would be better


Works great with the Redarc Elite. Looks like a factory install. Only issue I had is I will need to shim it into the center as it has some play to the top and bottom (see photos). Otherwise, this is the reason I bought the Redarc, so I could have the look of a factory installed brake controller. Installed on 2017 Nissan NV 3500 Passenger Van.


Got this to make sure the redarc tow pro elite was secure. Easy to install, only issue I ran into was the amount of space that it can sit into when installed. It's about an 1/8th of an inch worth of space that it can sit in


I purchased the Redarc Liberty for a new Honda Ridgeline which replaced an F250 with an old technology two dial proportional brake controller. This Redarc not only installed easily and cleanly in the more confined cabin of the Honda, its advanced one dial adjustment makes it more user friendly to adjust, and the settings are easily repeatable. For example, my trailer empty on hardtop gets 4, trailer with tractor 5.5, trailer with 1 yard of gravel a 6.5; on a dirt or gravel road just subtract 1 position on the knob.

The photos reflect my mounting technique which consisted of constructing a small open-back box of 1/4" MDF. The Universal Mounting Panel accessory worked well with the MDF. A coating of textured paint to match the interior makes it look almost OEM. Velcro holds the box securely yet allows for easy removal for whatever reason. The wire tucks neatly between the lower steering wheel valance and the console trim--can't see it even if looking for it, and no holes drilled in the dash.

Overall very happy with this product and with etrailer answering my questions and processing the order quickly.

Show More Reviews

See what our Experts say about this Redarc Accessories and Parts

  • Can the Redarc Tow-Pro Liberty be Installed in a 2014 4Runner?
    The Redarc Tow-Pro Liberty Brake Controller # RED24FR will definitely work with the Plug-and-Play Wiring Harness # RED49FR, which will then plug directly into your 2014 Toyota 4Runner. A potential add on to make the install look a bit better will be the Universal Mounting Panel # 331-TPSI-001. This can install just about anywhere and gives it a clean look once finished.
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    I see that you'd looked at the Curt item # C51170 Spectrum Brake Controller. While I really like the idea of a remote-type brake controller that features a control unit that mounts out of sight under the dash with a knob that mounts within the driver's reach, I prefer the Redarc Tow-Pro Liberty, part item # RED24FR. The control knob of the Liberty is smaller, and if it's installed in an un-used switch knockout in the dash or by using a mounting bezel like item # 331-TPSI-001, you'll end...
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    If your R-pod 195 has electric brakes, you'll need to install a brake controller to actuate them. I'd recommend a remote style controller like the Redarc Tow-Pro Liberty, part # RED24FR. The controller box mounts under the dash where it's out of sight, where you won't bash your knees into it when you enter/exit the vehicle. The trailer brakes are controlled by the control knob which is installed within the driver's reach. An unused switch knockout on the dash or center console is the...
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  • Parts Needed to Install Redarc Tow-Pro Elite in 2018 Nissan Titan
    You can install the Redarc Tow-Pro Elite Trailer Brake Controller # RED44FR on your 2018 Nissan Titan by using the Universal Mounting Panel # 331-TPSI-001 and the Tekonsha Wiring Adapter # 3050-P with the adapter part # 331-TPH-017 for a plug and play setup.
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  • Where do I Mount My Dial/Control Head for the Tow Pro Elite for My 2022 Chevy Silverado 1500?
    When installing the Redarc Tow-Pro Elite # RED44FR on your 2022 Chevy Silverado, it is important to note that the dial/control head is designed to be mounted at a distance from the main unit to allow for a neat, convenient installation and not impeding on lower leg airbags or driver leg room. The remote head can be mounted directly to the dashboard, to the center console, or through a spare knock-out switch panel. This does require for a single drilled hole. I went ahead and attached a...
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  • Recommended Redarc Tow-Pro Liberty Accessories on 2021 Subaru Ascent
    The Redarc Tow-Pro Liberty # RED24FR will use the Universal Wiring Harness for Redarc Tow-Pro Trailer Brake Controllers # RED69FR. This will connect to the 4 wires you referenced. The Mounting Panel for Redarc Tow-Pro Trailer Brake Controller Control Knob you are seeking isn't vehicle specific for your Subaru. You will want to adapt your current switch blank or use the Universal Mounting Panel for Redarc Tow-Pro Trailer Brake Controller Control Knob # 331-TPSI-001.
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  • Red Arc Brake Controller Over a Primus Brake Controller Which is Better?
    The Tekonsha Primus IQ Trailer Brake Controller item # TK90160 is one of our lower end brake controllers that has less features. As far as economy controllers go this is the best option for the cost. It is extremely simple and has limited adjustability. It's pretty bulky and you have to be careful how you mount it because of the angle required for it to function properly. If you want to fine tune this brake controller for comfort you can not do it. That's what short distance is referencing....
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  • Installation Process For A Trailer Brake Controller In A 2022 Toyota Highlander
    Before you can install a trailer brake controller in your 2022 Toyota Highlander you'll first need to make sure that you have a 4-pole wire harness for your lights installed and then a 7-way wire harness to get your brake function. If you don't already have a 4-pole installed then you'll want the Tekonsha # TK74FR if you have a factory tow package or the Curt # C59236 if you don't. From there you can install a 7-way # ETBC7. The # ETBC7 will have a 4-pole connector to connect to the 4-pole...
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  • Recommended Easy to Install Brake Controller for 2019 Subaru Ascent
    Yes, you will need a brake controller to control your trailer brakes and I recommend the RedArc Tow Pro Elite # RED44FR with plug and play adapter # 3062-P because the knob is a bit smaller and easier to find an acceptable place to mount in most vehicles. Overal the Tow Pro Elite and Curt Spectrum # C51170 are very similar controllers in their operation and the installation process, I just prefer the Red Arc because the knob is a bit more aesthetically pleasing and easier to install. In...
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  • Where to Mount the Tow-Pro Elite # RED44FR on a 2017 Chevrolet Silverado 1500
    The great thing about the Tow-Pro Elite # RED44FR is it's versatility when it comes to choosing a location to install the control knob. Since the control knob is smaller and the box that it connects to learns the direction of travel as you drive you can virtually mount it anywhere. If you check out the attached picture and installation video you can see that we mounted it in the center console for one application. If you would like a clean looking installation you can use the mounting...
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  • Wiring Harnesses Needed to Install Redarc RED24FR Liberty Brake Controller on 2000 Dodge Ram 2500
    Yes, you can use the Universal Wiring Harness for Redarc Tow-Pro Trailer Brake Controllers item # RED69FR and the Tekonsha Custom Wiring Adapter for Trailer Brake Controllers - Pigtail - Dodge item # 3020-S to install the Redarc Tow-Pro Liberty Brake Controller - Proportional item # RED24FR on your 2000 Dodge Ram 2500.This will give you a plug and play installation and cut out the hassle of splicing wires. We also have a couple of other mounting options for the control knob that can go...
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  • Recommendation Between 4-Pole and 7-Way Trailer Connector for 2017 Chevy Traverse
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  • Set up for a 2022 Nissan Frontier King Cab S 2WD no factory Towing
    In order to tow a travel trailer that has brakes, you'll need to equip your 2022 Nissan Frontier with a receiver hitch, a 7-way trailer wiring harness/trailer connector and a brake controller. For a hitch, I'd recommend the Draw-Tite # 75282 you'd looked at. For a wiring harness/trailer connector, use # 118266 and a # PK12711U mounting bracket. For a ball mount, use # C45010 as well as # 19260 for a 1-7/8 or # 63845 for a 2 inch trailer ball. Finally, in order to actuate the travel trailer's...
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  • Installing Redarc Tow Pro Liberty Brake Controller on 2021 Ram 1500
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  • What is the Best Brake Controller for Towing a Trailer?
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  • Brake Controller Plug Location on 2021 Jeep Grand Cherokee
    The factory brake controller connector on your 2021 Jeep Grand Cherokee is located under the dash behind the hood latch, as shown in the provided photo. Keep in mind, the connector will only be there if the vehicle has the factory tow package which includes the 7-way trailer connector at the rear bumper. If you have the tow package, to install the Tekonsha # TK90160 Primus brake controller on your 2021 Grand Cherokee you'll need the Tekonsha # TK93VR wiring harness. One end plugs into...
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  • Parts Needed To Wire Redarc Trailer Brake Controller To a 2010 Nissan Xterra
    To install the Redarc Tow-Pro Liberty Brake Controller # RED24FR in your 2010 Nissan Xterra you will first need to determine how the 7-way connector that you have on your vehicle is wired. If it connects to the factory connectors already on the back of your Xterra like the T-One Vehicle Wiring Harness # 118266, then you will only need the Plug-and-Play Wiring Harness # RED39FR. For a universal style 7-way that does not connect to the factory connectors you will either need to replace...
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  • Plug and Play 7-Way Trailer Connector Installation for 2022 Honda Pilot
    I'd be happy to help with that. You'll need the Tekonsha # 118286 7-way harness which is a plug and play install as shown in the linked video. If your trailer doesn't have brakes, simply install the harness as shown, and you'll be good to go. If your trailer has electric brakes, you'll also need to install a brake controller to actuate them. The Redarc Tow-Pro Liberty, part # RED24FR would be a great choice. The controller itself mounts under the dash out of sight, and everything is controlled...
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  • Which Mounting Plate Is Best For Installing Redarc Brake Controller In 2016 Silverado?
    I have a solution for you, however, there are not any custom-fit brackets to install the Redarc Tow-Pro Liberty Brake Controller # RED24FR or Redarc Tow-Pro Elite Trailer Brake Controller # RED44FR into your 2016 Chevy Silverado 1500 so you will want to go with a universal mount such as the Universal Mounting Panel # 331-TPSI-001. This fits on panels up to 9/32" thick. To use this, you would need to drill out a 25mm hole in which the mounting panel can be installed into. Then you can thread-in...
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  • Brake Controller Recommendation for 2019 Nissan Frontier
    The Redarc # RED44FR Tow Pro Elite is a great product that I'd typically recommend to folks that are already moderately conversant with how brake controllers operate, as the user interface isn't super-intuitive. If the braking system is experiencing a problem, the control knob will display a series of different LED colors and flashes that you'll need to familiarize yourself with. Don't get me wrong, it's an awesome product but not the simplest to use for a novice. Where the Redarc shines...
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  • How to Add 7-Way to 2018 Jeep Grand Cherokee Without Trailer Tow Package
    You are on the right track to adding a 7-way to your 2018 Jeep Grand Cherokee without the tow package, and the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118727 will fit your Jeep and is the correct first step. After adding that, if you only need the functions of the 4-flat (turn signals and tail lights) you can simply add the Adapter 4-Pole to 7-Pole # 37185 and tie off the additional wires which would not be needed. If you are looking to use a brake controller...
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