1. Tow Bar Braking Systems
  2. Brake Buddy
  3. Brake Systems
  4. Proportional System
  5. Portable System
  6. Recurring Set-Up
Brake Buddy Select 3 Portable Supplemental Braking System - Proportional

Brake Buddy Select 3 Portable Supplemental Braking System - Proportional

Item # HM39524
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Tow Bar Braking Systems

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Brake Buddy Tow Bar Braking Systems - HM39524
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Product Images

In Use/Installed

Customer Photos

Product Expert Mike S

Is this right for you? Product Expert Mike S says:

Yes, if you:

  • Need to be able to switch between towed vehicles
  • Have to use a portable system, but don’t have time to waste on complicated setup
  • Like the control and convenience of being able to adjust the brake pressure from inside your RV

No, if you:

  • Want a system that doesn’t require any setup at all
  • Have limited room in your RV or car to stow the system when it's not in use
Get intense, emergency braking or steady, smooth braking in a single portable system. Easily switch between proportional or full braking. One-touch Auto Start makes setup fast and easy. Remote lets you change settings from your RV. Lowest Prices for the best tow bar braking systems from Brake Buddy. Brake Buddy Select 3 Portable Supplemental Braking System - Proportional part number HM39524 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
  • All Info
  • Reviews (50)
  • Q & A (111)
  • Photos
  • Why etrailer?

Brake Buddy Tow Bar Braking Systems - HM39524

  • Brake Buddy
  • Brake Systems
  • Proportional System
  • Portable System
  • Recurring Set-Up

Get intense, emergency braking or steady, smooth braking in a single portable system. Easily switch between proportional or full braking. One-touch Auto Start makes setup fast and easy. Remote lets you change settings from your RV.


  • Supplemental braking system applies towed vehicle's brakes in proportion to braking action of RV
    • Responds to deceleration of RV to activate towed car's brake pedal with matching intensity
  • Full-braking setting activates brakes in towed car with maximum power no matter how you apply the brakes in the RV
  • Braking power settings ensure that the system applies your car's brakes with the correct pressure
    • Eliminates over-braking and the damage it can cause
  • Sensitivity control lets you adjust rate of responsiveness of internal sensor
    • Low sensitivity requires intense stopping action from RV to activate brakes in towed car
    • High sensitivity allows Brake Buddy to respond to even minimal slowing of RV
  • Advanced terrain-sensing ability prevents false braking
    • System won't activate when going over bumps
  • Wireless remote control mounts in cab of RV
    • Plug into 12V accessory outlet or use with AA batteries
    • Easily check readouts for potential problems
    • Change braking modes and settings while on the go
  • Lightweight, portable system is easy to position, adjust, and remove
    • TruFit risers allow unit to sit level for optimal performance
    • Quick-Lock clevis is simple to install on almost any car's brake pedal
  • Easy-Pull harness provides power and breakaway connection
  • 15-Amp charger charges your towed car's battery while you tow
  • 1-Touch Auto Start sequence prepares braking system with a push of a button
    • Removes excess vacuum pressure from your car's brakes
    • Checks braking system for errors
  • Compatible with hybrids and other cars with electric power-assist brakes


  • Dimensions: 19" long x 11-3/4" wide x 6-3/4" tall
  • Power draw at 12V: 15 amps
  • TruFit riser adjustment range: 1" - 4" tall
  • Easy-Pull harness length: 36"
  • Weight: 12 lbs
  • 5-Year limited warranty

Proportional Braking

The Brake Buddy Select 3 is a proportional braking system that applies your towed car's brakes with an intensity that matches your RV's braking action. The built-in inertia sensor detects when and how your rig slows down, and it then engages the actuator arm to press your car's brake pedal with an intensity that matches that slowing action.

The main unit of the Brake Buddy Select 3 is designed to activate only when deceleration is actually taking place. It is built with advanced terrain-sensing technology that keeps the unit from activating when you go over bumps in the road. As a result, your towed car's brakes won't engage unless you intend for them to engage.

Full Braking

You can also select the full-braking mode. When in this mode, the Brake Buddy will activate your towed car's brakes at the maximum preset intensity, regardless of how intensely your RV is decelerating. The full-braking setting is ideal for when you're towing a heavy truck or SUV, or if you're towing your car down a steep incline. By setting the power to a higher level, you can ensure that the momentum of your towed car won't cause it to push against your RV.

Braking Power Settings

Select Control Panel

The braking power settings determine how intensely the Brake Buddy Select 3 applies your towed car's brakes. When you're first setting up the Brake Buddy, choose a braking power based on your vehicle type. Begin with a pressure that falls into the recommended range for your towed car, as seen on the chart below.

Vehicle TypeRecommended Braking Power
Hybrids10 - 20 psi
Cars and Compact SUVs25 - 45 psi
Small Crossovers25 - 45 psi
Crossovers and Small SUVs35 - 65 psi
Mid-Size Pickups35 - 65 psi
Large SUVs and Pickups45 - 75 psi

After selecting an initial setting, press the plus or minus buttons on the actuator unit's control panel to fine-tune the power setting. The setting should be enough to cause your towed car to give a slight tug at your RV during a braking event. Braking power doesn't normally need to be reset unless you're changing to a different towed car.

Once the overall braking power is set, you can customize the sensitivity on the Brake Buddy. The sensitivity setting determines how aggressively you need to brake in the RV for the Brake Buddy to activate your towed car's brakes. If you set the sensitivity high, then your car's brakes will activate with just a light tap of your RV's brakes. Setting the sensitivity low ensures that your car's brakes will only activate when you hit the brakes in your RV with a fair amount of intensity.

Easy Remote Operation

Select Remote

The included remote control allows you to monitor or change settings for the Brake Buddy Select 3 from the comfort of your RV's cab. You can easily switch from proportional braking to full braking and vice versa with the push of a button. You can also change the Brake Buddy's sensitivity settings, which makes it easy to fine-tune the braking as you drive so that you can adjust based on feel. Finally, the remote will illuminate to alert you of any errors with the Brake Buddy system, including a breakaway event.

Powering the Brake Buddy

Instead of connecting to a 12V accessory outlet, the Brake Buddy Select 3 draws power directly from your towed car's battery. To do this, the included wiring harness connects to your car's battery. Install the harness by routing the wire end through your car's firewall and into your engine compartment. Connect the harness to your battery with the included battery wire and ring terminal.

Mount the connector that's on the opposite end of the harness in a convenient, out-of-the-way location beneath your car's dash.

Easy-Pull Harness

To connect the actuator unit to this connector, use the included Easy-Pull harness. This harness plugs into the connector below your dash, then into the braking system. When connected, the harness carries both power and breakaway functions in a single cord. And the large grip ring and wide handle make it easy to hold while connecting and disconnecting the actuator, all without ripping connectors or pulling on wires.

If you're concerned about your car's battery going dead as you tow, don't worry. The Brake Buddy Select 3 includes a 15-amp charger that pulls power from your RV to keep your car's battery charged while the Brake Buddy is connected.

Fast Setup and Universal Design

Not every car is built the same. Some have brake pedals with unusual shapes. Some have uneven floorboards or mats. These differences can make it difficult to set up a portable braking system in your towed car. But the Brake Buddy Select 3 is able to fit in almost any car on the market.

Quick-Lock Clevis

The Brake Buddy's actuator arm comes with an adjustable Quick-Lock clevis, which securely wraps around your towed car's brake pedal, regardless of the pedal's size or shape.

The clevis also comes with a quick-locking lever. Once you adjust the jaws of the clevis to fit your brake pedal, turn the lever to tighten the clevis in place. And when you're done towing, disconnecting the clevis is a snap. Just turn the lever to release the clevis jaws, and remove the clevis from your brake pedal. It's that simple.

Risers Off Kilter

Uneven floorboards can cause a portable braking system to sit at an angle in your towed car. This affects the leverage of the actuating arm, which can result in ineffective braking. Each of the TruFit risers on the Brake Buddy Select 3 actuator unit can be individually adjusted, raising or lowering each corner of the actuator unit, so that the system sits level in your car. As a result, the actuator arm is able to press straight against the brake pedal to ensure that your brakes are properly depressed every time.

TruFit Risers with Wrench

To adjust the height of the risers, twist them counterclockwise, either by hand or with the included riser wrench. Pull each riser out to match the height you need, then twist the riser clockwise to secure it at that height.

One-Touch Auto Start

Select AutoStart

The Brake Buddy Select 3 will automatically check your brakes every time you start it up to confirm that your vehicle is ready to tow. After setting up the unit in your towed car, press the Auto Start button on the unit's control panel. The arm of the unit will push and release the brake pedal several times, removing vacuum pressure from the brakes to prevent overbraking. The unit will also check for any connection errors.

39524 Break Buddy Select Three Portable Towed Vehicle Braking System by Hopkins

This Product Fits The Following Vehicles

California residents: click here

Customer Reviews

Brake Buddy Select 3 Portable Supplemental Braking System - Proportional - HM39524

Average Customer Rating:  4.7 out of 5 stars   (50 Customer Reviews)

Get intense, emergency braking or steady, smooth braking in a single portable system. Easily switch between proportional or full braking. One-touch Auto Start makes setup fast and easy. Remote lets you change settings from your RV.

- HM39524

Hi Miranda, here are the pictures of the bracket and Brake Buddy installed in my Jeep. Works very well. I tried to move the seat forward a bit but when the Brake Buddy activated it pushed the seat adjuster and moved the seat all the way back. Thank you for the bracket.

- HM39524
Chevrolet Equinox

I received the order quickly. The instructions and videos on the etrailer site allowed me to have some of the pre-wiring finished before the brake buddy arrived. Wiring and initial setup was straightforward and easy. I have used the brake buddy three times. Once as a test run then to and from a short camping trip. The third time setting up the unit was super easy and fast. With the blue ox system and the brake buddy I can hook up in just under five minutes. I tow a 2020 Chevrolet Equinox and had no problems with the battery draining because the system includes a battery charger.

- HM39524

I use the brake buddy when flat towing my Jeep. I just wish the proportional mode could brake lightly when my trucks brakes lightly and brake hard when my truck brakes hard. I found the settings difficult to dial in and took me many test runs braking down empty roads to find a compromise. For me, this system works better as an emergency brake so I set it up so my truck does all the braking unless I brake harder then my Jeep brakes hard also. There are a lot of settings to experiment with. If you set it wrong you could toast the brakes on your towed vehicle. It's nice i can change some settings from inside my truck so if I'm on the highway I can make it more sensitive than when in the city.

- HM39524

Considering the fact that the most-towed vehicle is the Jeep Wrangler, this product barely fits and the leg adjusters are nearly useless on our 2016 Jeep Wrangler. I had to remove the pedal extender that my wife uses because she is not even 5’ tall but did not have to that when we used our old classic Brake Buddy. Other than that, the unit works as advertised and no other major complaints so far after 2 days and over 1,000 miles.

- HM39524

Lightweight and easy to use. Instructions were straightforward but installing the wiring into the towed vehicle is not a trivial task. Failed once but was quickly replaced by etrailer. This happened close to home but could be a real nuisance on a long trip.

- HM39524
Jeep Wrangler

We use this in our Jeep JKUR (4-door wrangler) on every trip. The quick connect plug is much better than the previous power (cigarette lighter style) plug. The remote works flawless even though it is about 50' from the unit. This is our 2nd unit and still plenty of smiles per mile for us!

- HM39524
2015 Jeep Cherokee

Disappointed. I bought this to replace my 8-yr old Brake Buddy Vantage on which the compressor died. Shipping was prompt. My plan was just to replace the main unit. Imagine my surprise to find out they have changed all the connections, so now I have to rewire my vehicle!!! The previous version plugged into a normal 12-volt outlet, and the emergency break away has its own connection. Now they have an all in one plug, so now need connections. Sure would have been handy to have a convertor for the old connections. Come on man!!! Also, the adjustable clevis for the brake is missing a lock nut, so the bottom just spins and you have to set it every time. I can't even add one, as the threaded shaft is welded to the top. Guess I will have to call them and get some parts. Hard to do since we are on the road and need to have the system.

- HM39524
2014 Honda CR-V

Excellent product, install instructions a little vague, after call to tech support was able to install with no problem.

- HM39524
GMC Canyon

I sent a question asking " Does a 2021 Canyon need a battery cut of switch" The answer I got was you guys didn't know. You should have known the answer to that question.

- HM39524

The bake unit works well & is relatively easy to install. The included remote monitors brake activity and allows you to configure the braking modes and change system sensitivity. I use the brake Buddy on a 2019 F-150 that won't let you turn the ignition key to the off position, so I added a coupe etrailer kits that included wires, breakers & fuses to keep the truck battery charged.

- HM39524

Great products easy to install haven’t used it yet waiting on warmer weather etrailer always has items in stock and great customer service

- HM39524

Shipping was very quick. Etrailer provides very good installation videos. Good people to deal with.

- HM39524

Ordered and received in one week. Checked contents and all was there and damage free. Haven’t done the install yet but instructions are straight forward and simple enough for anyone with some ability. Will follow up with review after install and use of products.

- HM39524

Ordered at sale price, etrailer confirmed order, gave tracking and delivered one day before estimated date

- HM39524

The actual unit seems to work well, but the remote does not. The power button is cheap and is hard to get it to stay on, to the point of we gave up using it. thought about sending it back to be replaced but we have not been traveling much during covid so kinda forgot about it.

- HM39524

All went as promised. Completely satisf ied.

- HM39524
2017 Dodge Charger

I bought the Select 3 version of the Brake Buddy to replace an original unit, which was 10+ years old--at least 3 RV's and 3 Towed's. The most recent is a real upgrade. We like the battery charger, and the ability to change the setting as we need to. The unit is far more user friendly, and easier to hookup.

- HM39524
2019 Dodge Charger

I have used a Brake Buddy for 19 years. The first BB was recommended by a local RV / Camping supply dealer. The new "Select 3" that I just purchased has many improvements to make the BB easier to use and to fit the towed car. Brake Buddy's system is complete, nothing more to buy, brake away, remote, and battery charger are all included. The 5 year warranty is a bonus. Most RV dealers and suppliers still recommend Brake Buddy.

- HM39524

What a amazing piece of equipment. this should make braking and descending on large hills easier.

- HM39524

Quick delivery, less than a week. I haven’t hooked it up yet but looking at the video it shouldn’t be any problem

- HM39524

Great product a little more difficult to install but with a little time and patience anyone can do.

- HM39524

- HM39524

Just received product. Have not install ed.

- HM39524

Brake buddy works very well and sets up quite easily.

- HM39524

Very satisfied

Show More Reviews

Ask the Experts about this Brake Buddy Tow Bar Braking Systems

  • Best Parts To Flat Tow 2019 Ram 1500 New Body Style With 3.6L Engine
    We do have all the parts you need to flat tow your 2019 Ram 1500 with the new body style and 3.6L engine, and I'd be happy to make a list for you so you know what to get. That said, all of the parts needed to flat tow your truck are as follows: - Base Plate Kit: Demco Tabless Base Plate Kit # DM9519341 - Tow Bar: Demco Commander II Non-Binding Tow Bar # DM9511012 - Wiring Kit: Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit # RM-15267 - Supplemental Braking System: Brake...
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  • How To Use Brake Buddy Select 3 On 2019 Ford Edge With Battery Disconnected
    The Brake Buddy Select 3 Portable Supplemental Braking System part # HM39524 is directly compatible with a 2019 Ford Edge. It connects directly to the battery so there won't be any issues if you have to disconnect the battery for towing. That said, you'd obviously need to attach the power and ground wires to the battery studs instead of the cables which run to the power distribution center since these will be removed or power cut to them.
    view full answer...
  • Will Hopkins HM39524 Brake Buddy Select 3 Actuate Brakes Even Though Vehicle Isn't Running
    Although you won't have power brake assist with the vehicle off, the Brake Buddy Select 3, part # HM39524 will apply enough pressure to the brake pedal that the brakes will work just fine once the unit is installed and properly set up according to the installation instructions. You'll be able to remotely control the unit from the cab of the motorhome. I've linked to an install/demonstration video that you might find helpful.
    view full answer...
  • Where Does Charge Line of Hopkins Brake Buddy Select Attach to Tow Vehicle
    The charge line of the Brake Buddy Select 3 Portable Supplemental Braking System # HM39524 normally attaches to the 12 volt accessory circuit on the 7-way of the tow vehicle. This is normally the 1:00 pin. If this circuit isn't active on your motorhome you'd just need the part # RM-156-75 and you'd be set.
    view full answer...
  • How to Add Power for Brake Buddy Select Supplemental Braking System on 2016 Ram 1500
    Since your Brake Buddy Vantage Select, similar to the Select 3 # HM39524, needs to connect to a 12V power socket you'll need to install the 12V Outlet Kit # RM-9332 on your 2016 Ram 1500. You could potentially keep your truck turned on but it would require you to add some wiring to keep your battery from draining plus I'm not sure if that would have a negative impact on anything else with your Ram so I don't recommend doing that. If you still wanted to add a charge line to your Ram just...
    view full answer...
  • How is the Brake Buddy Powered if Battery is Disconnected?
    To flat tow certain vehicles, the ignition might be in a position that would normally activate certain accessories on the vehicle that would drain the batteries and aren't necessary while towing. To avoid this, some manufacturers instruct you to disconnect the negative battery terminal. Since the Brake Buddy needs to draw power from somewhere, you need an outlet kit such as # RM-9332, which wires directly to the battery. This will allow you to disconnect the battery so your vehicle doesn't...
    view full answer...
  • Should RV Flat Towing Breakaway Switch Mount to Base Plate
    We can't recommend you drill into the base plate to mount the breakaway switch as that would void the warranty of the base plate kit. Instead I would recommend mounting the switch to the bumper of the vehicle.
    view full answer...
  • Brake Buddy Not Fitting In 1994 Jeep Wrangler
    First thing you want to do to set up your Brake Buddy Select 3 Portable Supplemental Braking System - Proportional Item # HM39524 in your 1994 Jeep Wrangler is make sure your seat is slid all the way back. Second make sure the brake pedal clamp is not on the unit when you set it on the floor board. Place the unit on the floor, in front of the seat, with the arm centered on the brake pedal. Adjust feet for necessary height. Add the clamp on the brake pedal and attach to unit arm with pin...
    view full answer...
  • Can the Brakes of a Flat Towed Vehicle be Applied Manually using the Brake Buddy 3
    The Brake Buddy Select 3 Portable Supplemental Braking System part # HM39524 will not allow you to apply the brakes on the towed vehicle separately. Instead like you mentioned it uses a proportional sensor to apply the brakes when the towing vehicle slows. You are able to control the braking sensitivity or how how much work you want the towed vehicle to do but it doesn't offer a manual override like on a trailer brake controller to manually engage the brakes on the towed vehicle. Check...
    view full answer...
  • Does Charger Included with Brake Buddy Portable Supplemental Braking System Need to Be Installed
    Because the Brake Buddy uses power from the vehicle's battery to actuate, you will need to set up the charge circuit as directed in the installation instructions. The parts needed to accomplish this are included with the Brake Buddy.
    view full answer...
  • How Does Brake Buddy Select System Charge
    The Brake Buddy Select systems like the 3 part # HM39524 draws power directly from your towed car's battery. To do this, the included wiring harness connects to your car's battery for the charge. Install the harness by routing the wire end through your car's firewall and into your engine compartment. Connect the harness to your battery with the included battery wire and ring terminal. This is a very common way for similar systems to be powered.
    view full answer...
  • Does Wireless Remote of Brake Buddy 3 # HM39524 Have to Mount Flat
    The wireless remote of the Brake Buddy 3 # HM39524 does not have a specific orientation that it has to mount in so you could use it vertically or horizontally as needed.
    view full answer...
  • What is the Difference Between the Brake Buddy 2 and Brake Buddy 3
    As with most situations where products are updated, the differences between the Brake Buddy 2 and the Brake Buddy 3 # HM39524 may not be so obvious, or seem minute-but they do offer improvements in the functioning of the system. The Brake Buddy 3 now uses TruFit risers that quickly and easily positions your braking system for ultimate braking performance; these risers are designed to help on vehicles that have differences in elevation on the floor boards, so you'll get a much more stable...
    view full answer...
  • Fuse Type and Rating for Brake Buddy 3 Supplemental Braking System
    The Brake Buddy Select 3 part # HM39524 that you referenced uses a 15 amp glass fuse like what you see in the picture I attached. It's the older style automotive glass type fuses. They are very easy to find at local auto parts stores.
    view full answer...
    Image 1 for
  • Can HM39524 Brake Buddy Flat Towing Braking System Effectively Apply Brakes with Vehicle Off
    When braking systems like the # HM39524 Brake Buddy Select 3 are designed, the engineers know that with the vehicle not running, there won't be any brake assist. Portable braking systems such as the Brake Buddy Select 3 will have no problem whatsoever exerting enough pressure on the brake pedal for safe and effective braking. The brakes still work, more force just needs to be applied to the pedal which systems like this have no problem doing. Bottom line, you don't need to run the engine,...
    view full answer...
  • Troubleshooting Brake buddy on Jeep Wrangler Unlimited
    If you are of the impression that a faulty signal is being sent from your Brake Buddy, # HM39524, I suggest you remove all power for no less than 15 minutes allowing the unit to reset. We want to ensure you do not have any vacuum pressure built. If on resuming testing you have a repeated error in operation check the signal from your breakaway switch, ensure switch is fully seated. From the Tech Rep at the manufacturer, they also suggest that you double check wiring at switch housing...
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  • Is The Brake Buddy 2 Compatible With 1993 Geo Tracker
    Yes, the Brake Buddy 2 and the Brake Buddy Select 3 Portable Supplemental Braking System part # HM39524 is compatible with the 1993 Geo Tracker. You also need a base plate, tow bar, tow bar wiring and possibly a high low adapter. If you do not have these parts and need further recommendations please let me know.
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  • Does Charge Line of Brake Buddy 3 Need to Install if Roadmaster Charge Line Kit is In Use
    Since you already have the Roadmaster battery charge kit part # RM-156-25 you would not need to also install the charge kit of the Brake Buddy 3 part # HM39524 as it's essentially the same exact same thing. You could leave that off.
    view full answer...
  • Flat Towing Equipment Needed For A 2021 Jeep Wrangler Unlimited JL
    To flat tow your 2021 Jeep Wrangler Unlimited JL you'll need the following things: Tow Bar: The Roadmaster Nighthawk All Terrain, Non-Binding Tow Bar w/ LED Lights - RV Mount - 8K Item # RM-676 is a perfect tow bar as it comes with safety cables, has a 8k weight capacity so you can load you vehicle too, and is non-binding which will make connecting and disconnecting on uneven surfaces easy. Tow Bar Wiring: I recommend Roadmaster Universal Hy-Power Diode Wiring Kit Item # RM-154 over...
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  • Installation of Brake Buddy Supplemental Braking System on 2014 Honda CR-V
    For installation of your Brake Buddy, # HM39524, you can route the wires through a grommet that is already being used for the factory wiring. I suggest you look underneath the brake fluid reservoir to the driver's side to locate a good option; push your wiring through here then use a pull from inside the cab of the vehicle. I have attached a couple of installation videos that will hopefully assist you.
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  • Braking system solution for 1999 Jeep Wrangler Flat Towed by 2013 Ford F150
    I would suggest using the Brake Buddy Select 3 Portable Supplemental Braking System # HM39524. It is a great option that requires minimal installation for power and emergency brake away cables. It is also portable so it can be moved to different vehicles very easily. It includes a remote that you can use in your Ford F150 or any other vehicle with a 12 power supply. The remote allows you to receive feedback from the unit as well as be able to adjust the sensitivity while you drive. This...
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  • Replacement Controller for Brake Buddy Select 3
    I spoke to the technicians over at Hopkins and the Brake Buddy Select 3 # HM39524 will still work without the controller. The accelerometer that actuates the braking system is located in the actual braking box itself. That being said, you will not be able to adjust the intensity of the brakes or have the manual override function. I suggest replacing the controller # HM39505 at you earliest convenience.
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  • InSupplemental Braking System for 06 Scion XB
    There are several differnt ways you can go with this, I will list a few and their features. The first is my preferred route providing it is in the acceptable price point. The Demco SBS Stay-IN-Play DUO Supplemental Braking System - Proportional, # SM99251. With this you get automatic, proportional braking with a system that never has to be removed, replaced, or reset. The DUO activates when your RV's brake lights go on and an inertia sensor in the towed car detects deceleration. It is...
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  • Brake Buddy Select 3 Portable Braking System Compatibility With A 2021 Jeep Wrangler
    The Brake Buddy Select 3 Portable Supplemental Braking System - Proportional Item # HM39524 is listed as not a compatible fit because it's a very tight fit trying to get the clevis onto the brake pedal and 2021 Jeep Wrangler owners have had to reach out to Brake Buddy to get a special clevis sent out to them. You can purchase this and get contact Brake Buddy to get the special clevis or you can go with the Blue Ox Patriot 3 Radio Frequency, Portable Braking System - Proportional Item...
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  • Choosing Between the Brake Buddy Select 3 and the Blue Ox Patriot II Supplemental Braking System
    When it comes to choosing between the Blue Ox Patriot II # BRK2016 and the Brake Buddy Select 3 # HM39524, these systems are extremely similar in their setup and functionality. Both of these systems provide proportional braking in a compact and easy to install braking box and there are a ton of great reviews for both of these systems. In regards to functionality, I've seen some reports of the Patriot II being a little bit slower in the response to the braking on their RV, which I have not...
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  • How To Wire Brake Buddy Battery Charger 39339
    The BrakeBuddy Towed Vehicle Battery Charge Kit part # BB54FR comes with a the Brake Buddy Select 3 Portable Supplemental Braking System part # HM39524. I have attached a wiring diagram of how this is setup with the Brake Buddy.
    view full answer...
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  • Roadmaster Even Brake vs. Brake Buddy Select 3 Supplemental Braking Systems
    The Roadmaster Even Brake Portable Supplemental Braking System # RM-9400 and Brake Buddy Select 3 Portable Supplemental Braking System # HM39524 are really good choices for easy-to-use portable braking systems, and have only one difference that I would consider a major factor. That difference is the remote of the Brake Buddy vs. the monitor of the Even Brake that you'll have in your motorhome. While both give you alerts and allow you to monitor the system's status, the Brake Buddy's...
    view full answer...
  • Comparing the Brake Buddy Classic 3 and Brake Buddy Select 3 Supplemental Brake Systems
    Great question! The Brake Buddy Classic 3 # HM39494 is a more basic system than the Brake Buddy Select 3 # HM39524 as the Classic just uses preset braking (which applies the brakes at a preset intensity when the inertia sensor detects deceleration) while Select lets you choose between proportional and full-braking action (activates towed vehicle brakes at max power regardless of RV brake pedal intensity) when you’re towing a vehicle. The Select also comes with a remote control so you...
    view full answer...
  • How To Install Break Away For Brake Buddy Braking System
    The Replacement Breakaway System for Brake Buddy Classic and Select Supplemental Braking Systems part # HM39340 replaces the brake away switch for the brake buddy Classic II, Select II, Classic 3 (# HM39494), and Select 3 (# HM39524). We have not yet installed the breakaway switch from this setup yet to have a video to for assistance but I have attached the installation instructions for installing the break-away with the Brake Buddy system.
    view full answer...
    Image 1 for

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    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Video Edited:
Jeff D
Employee Dustin K
Video Edited:
Dustin K
Employee Joshua S
Video by:
Joshua S
Employee Jacob H
Video by:
Jacob H
Employee Leah S
Updated by:
Leah S
Employee Mike S
Updated by:
Mike S
Employee Isabelle B
Updated by:
Isabelle B
Employee Alexander C
Written by:
Alexander C
Employee Shane H
Test Fit:
Shane H
Employee Ryan G
Test Fit:
Ryan G

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