1. Tow Bar Braking Systems
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FITS 2016 Ford F-150
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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2016 Ford F-150

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HM39524 - Portable System Brake Buddy Brake Systems
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Brake Buddy tow bar braking systems for your 2016 Ford F-150 are available from etrailer.com. Installation instructions and reviews for your Ford tow bar braking systems. Expert service, and cheapest tow bar braking systems price guarantee. etrailer.com carries a complete line of Brake Buddy products. Order your Brake Buddy Select 3 Portable Supplemental Braking System - Proportional part number HM39524 online at etrailer.com or call 800-298-8924 for expert service.
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2016 Ford F-150 - Brake Buddy Select 3 Portable Supplemental Braking System - Proportional

  • Brake Systems
  • Brake Buddy
  • Proportional System
  • Portable System

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 Ford F-150 Braking System by Hopkins

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   (11 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
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. 729389

- HM39524

Best on the market. Well worth the mone y. 665721

- 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. 695943

- HM39524

Proven track record that ensures we will continue shopping here 892898

- HM39524
by: 09/11/2020

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. 877270

- HM39524

It was a little hard to disconnect at first because of it being new but now there is no problems! 870158

- 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. 864517

- HM39524
2020 Ford F-150

Good experiance, quick delivery 855624

- HM39524
2014 Ford Focus

very satisfied with product 844566

- HM39524
2019 Jeep Wrangler

Easy install on a 2019 Jeep Wrangler. I've only done a local trip to test it out. It appears to be working very well. 805751

- 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. 781862


Ask the Experts about this Brake Buddy Tow Bar Braking Systems

  • 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...
  • 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...
  • 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...
  • 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...
  • 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...
  • 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...
  • 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...
  • 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.
    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...
  • 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...
    view full answer...
  • 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...
  • 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...
  • Does Wireless Remote for Brake Buddy Select 3 Need Signal Booster
    The wireless remote that comes with the Brake Buddy Select 3 # HM39524 is designed to sit in the cab of your RV and still be able to communicate with the portable system that is mounted in your towed vehicle. You won't need a signal booster to use this system.
    view full answer...
  • 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...
  • Does Brake Buddy Select Supplemental Braking System Drain Vehicle Battery
    The Brake Buddy Select 3 part # HM39524 like you have plugs into a power outlet in the tow vehicle to power the brake setup. So what that means is that it's draining your vehicle battery as it's being used. Using a fuse bypass won't prevent this from happening. Only solution is a battery charge kit like the part # RM-156-25 like it sounds like you tried which will keep the battery topped off so that when it's being used it will hopefully recharge.
    view full answer...
  • Will Brake Buddy Select Braking System Fit 2006 Jeep Wrangler Rubicon
    There's no reason the Brake Buddy Select part # HM39524 wouldn't work in your 2006 Jeep Wrangler. It just hasn't been added to our fitguide at this time. This is a proportional braking system that senses how hard you apply the vehicle brakes and applies them in a proportional amount on the tow vehicle. The advantage the Select model has over the Classic is that it can also give you a "full brake" setup which applies full braking power all the time when brakes are applied. This is particularly...
    view full answer...
  • Parts Needed to Flat Tow 2017 Jeep Wrangler Unlimited Sahara
    We definitely have everything you need to set your 2017 Jeep Wrangler Unlimited up for flat towing, however the components are not available in a single kit. To flat tow the Jeep you will need a base plate kit, a tow bar, safety cables, a lighting solution, and a supplemental braking system. I will list out my specific recommendations below so that you can have everything you need on this handy answer page, and go into a bit more detail on each product further down. Base Plate Kit -...
    view full answer...
  • Installing Base Plate Kit and Wiring on 2015 Dodge Durango for Flat Towing
    The Blue Ox Base Plate Kit # BX2411 that you were looking at is confirmed to fit your 2015 Dodge Durango, whether or not it features Adaptive Cruise Control. We haven't had a chance to install this particular kit, so we don't yet have a video available. I did attach the full install manual though that you can look through for reference. I have also attached an image that shows what tools you will need to have on hand. For a lighting solution on the Durango I recommend the Roadmaster...
    view full answer...
  • Parts Needed to Flat Tow 2019 Ford Ranger
    For your 2019 Ford Ranger you are on the right track for picking out flat towing components with the Blue Ox base plate kit part # BX2679 and tow bar # BX7380 but the wiring kit you mentioned is for trailer towing so instead you can use the diode kit, # RM-15267, and not have to worry about cutting into the taillight housing. This will splice into your taillight wiring to allow your tow vehicle to control the taillight assemblies of the towed vehicle. This comes with a round 6-way connector...
    view full answer...
  • Can Hopkins Heavy-Duty Trailer Coiled Wire Adapter 7-Way to 5-Way be Used for Flat Towing
    The Hopkins Heavy-Duty Trailer Coiled Wire Adapter 7-Way to 5-Way Flat with Nite-Glow # HM47025 that you referenced is designed to carry the brake, turns, tail, reverse and ground functions, and is typically used for towing a trailer as opposed to a flat towing setup. I like to recommend the Flexo-Coil Wiring Kit # RM-15267 for flat towing vehicles because it is reliable and allows you to install everything you need for flat towing. It sounds like you're trying to use a trailer brake...
    view full answer...
  • Roadmaster Direct-Connect Base Plate Kit for a 2007 Jeep Wrangler
    I do have a solution for you to use the same style of base plate kit but the Base Plate Kit # RM-521448-5 that you referenced is not a fit. Instead you need the Kit # 1429-3 (won't fit with optional Mopar skid plate) if you have the standard factory bumper or the Kit # 1430-3 if you have a Mopar/Warn bumper. If you have a different bumper then let me know and I can help you find a solution. To complete your flat towing setup you also need a tow bar, safety cables, vehicle tow bar wiring,...
    view full answer...
  • Do Roadmaster Crossbar Style Base Plates Effect Activation of Collision Sensors on 2019 Ford Ranger
    To give you the short answer- No. The crossbar style base plates like the Roadmaster # RM-524459-4 will not interfere with the collision avoidance sensors when installed on your 2019 Ford Ranger. The sensors are mounted on the front bumper far enough away from the base plates that they won't activate them. You will have to disconnect the sensors during the installation, since the bumper is removed, but they are plugged back in once the bumper goes back on. The arms on these base plates...
    view full answer...
  • Is 2006 Pontiac Vibe FWD Automatic Transmission Flat Towable
    According to my research, your best bet would be to use a Tow Dolly like # RM-2050-1, but ONLY if your Vibe is equipped with the U341E automatic transmission, it can be towed if a transmission lube pump is installed. We don't offer the lube pumps, you'd need to locate a part # LP-BK01-019 lube pump kit online. If you decide to go that route, you'd need base plates, a tow bar, safety cables, a wiring harness, a supplemental braking system and possibly a high/low adapter to successfully...
    view full answer...

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Info for this part was:

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

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