1. Brake Actuator
  2. Hydrastar
  3. Electric-Hydraulic Brake Actuator
  4. Drum Brakes
  5. 1000 psi
HydraStar Electric Over Hydraulic Actuator for Drum Brakes - 1,000 psi

HydraStar Electric Over Hydraulic Actuator for Drum Brakes - 1,000 psi

Item # HBA-10
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HydraStar Electric Over Hydraulic Actuator for Drum Brakes - 1,000 psi 1000 psi HBA-10
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Anodized aluminum electric-hydraulic actuator lets you use your brake controller (sold separately) to activate your trailer's hydraulic drum brakes. Vented end plate releases heat. Includes hardware. Hydraulic lines and breakaway sold separately. Call 800-298-1624 to order Hydrastar brake actuator part number HBA-10 or order online at etrailer.com. Free expert support on all Hydrastar products. Guaranteed Lowest Price and Fastest Shipping for HydraStar Electric Over Hydraulic Actuator for Drum Brakes - 1,000 psi. Brake Actuator reviews from real customers.
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  • Reviews (20)
  • Q & A (132)
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Hydrastar Brake Actuator - HBA-10

  • Electric-Hydraulic Brake Actuator
  • Drum Brakes
  • 1000 psi
  • Hydrastar

Anodized aluminum electric-hydraulic actuator lets you use your brake controller (sold separately) to activate your trailer's hydraulic drum brakes. Vented end plate releases heat. Includes hardware. Hydraulic lines and breakaway sold separately.


  • Electric-over-hydraulic brake actuator activates your trailer's hydraulic brakes when you apply the brakes in your tow vehicle
    • Brake controller (sold separately) is required to send signal from tow vehicle to actuator when brakes are applied
    • 7-Way trailer connector (sold separately) is needed to transmit signal from brake controller
  • Improved functionality when compared with surge brake couplers
    • Faster response time - trailer brakes are triggered when you apply brakes in tow vehicle, as opposed to when trailer pushes against hitch ball
    • No need to manually lock out brakes when you back up
    • Trailer brakes can be intentionally activated when you reverse
    • Manual override on brake controller can be activated so you can engage the trailer brakes without having to apply your vehicle brakes
  • Vented end plate releases pressure, moisture, and heat in order to protect the internal components
    • Allows actuator to be mounted in places where most actuators would overheat
  • Electronic, proportional pressure valve ensures that braking is smooth and effective
  • Built-in bleeder screw lets you easily flush air out of the brake lines
  • Durable extruded aluminum provides corrosion resistance
  • Compatible with any standard, 5-amp-hour-battery breakaway kit (sold separately)
  • DOT compliant
  • Unit installs on trailer frame and connects to trailer's wiring and hydraulic brake lines (sold separately)
  • Made in the USA


  • Application: single- and tandem-axle trailers (up to 7,000 lbs) with drum brakes
  • Maximum output pressure: 1,000 psi
  • Power: 12V DC
  • Hydraulic port size: 3/16"
  • Dimensions: 11-3/4" long x 3" wide x 7-3/8" tall
  • Wire configuration:
    • Black: 12-volt power
    • Blue: brake controller
    • Yellow: breakaway
    • White: ground
  • 2-Year limited warranty

Note: Do not power wash the HydraStar actuator or take it through a commercial car wash. High-pressure water may damage the seals on the actuator.

The HydraStar electric-over-hydraulic trailer brake actuator applies pressure to your trailer's hydraulic brake system in response to the electrical signals sent from your in-cab brake controller. As a result, your trailer's hydraulic brakes will be activated every time you apply the brakes in your vehicle or press the manual override on your controller. This setup is ideal for boat trailers because you will get responsive hydraulic braking, which you control conveniently from inside your vehicle with your electric brake controller.

HydraStar Electric-Over-Hydraulic Actuator vs. Standard Surge Brake Actuators

With the HydraStar electric-over-hydraulic actuator, you can get all the benefits of towing with an electric brake controller while using hydraulic brakes. Because this actuator will activate according to the settings you have chosen for your brake controller (sold separately), you will have more control over when and how your trailer brakes engage. Depending on the features of your brake controller, you may be able to control both the rate and intensity with which your trailer's brakes activate. You can also use the manual override on your brake controller, which allows you to engage the trailer brakes without having to apply the brakes in your vehicle. And perhaps most impressive, if you have a proportional brake controller, your brakes will be activated with an intensity that matches the braking speed and power of your rig.

This pump-and-motor-based system increases response time compared with traditional actuators because the trailer brakes are triggered when you apply the brakes in the tow vehicle, as opposed to when the trailer pushes against the hitch ball. This not only gives you faster, more efficient braking, but it also eliminates the pushing sensation that occurs in setups that use standard surge brake actuators.

HydraStar actuators are also beneficial because, unlike standard surge couplers, they allow you to activate your brakes when reversing down an incline, such as a boat ramp. Having the ability to brake in reverse gives you more control and prevents wear on your tow vehicle.

HydraStar Installation

Hydrastar Installation Diagram

This HydraStar electric-over-hydraulic brake actuator will give you years of trailer-stopping performance. The actuator mounts on your trailer's frame with the included hardware. Then it splices into the trailer's wiring and connects to your hydraulic brake lines from the 3/16" female port. Lines and fittings are sold separately.

Durable Construction

Just like other HydraStar electric-over-hydraulic actuator models, this system is built of extruded anodized aluminum for excellent corrosion resistance. In addition, the weathertight seals protect internal components from the elements.

This actuator also has a vented end plate that releases pressure, moisture, and heat to help prevent any internal damage. Unlike models that are unable to release heat and pressure, this vented actuator can be safely mounted inside of a compartment on your trailer. As a result, this actuator is great for gooseneck and fifth-wheel trailers where finding space on the tongue can be nearly impossible.

Brake Controller Compatibility

Not all electric trailer brake controllers will work with this electric-over-hydraulic brake actuator. See the following table to determine compatibility with common models of brake controllers. For best performance, it is recommended that you use an aftermarket electric brake controller rather than an OEM factory-installed controller.

ManufacturerVehicle Years/Controller ModelsCompatibleCompatible if Used with HBA-CAM
Brake ControllersDraw-TiteActivator (5100)Yes
Activator II (5500 or 5510)Yes
Activator III (5520)Yes
Activator IV (5504)Yes
HayesEnergize III (81741B)Yes
Energize III+ (HA81742B)Yes
Energize XPC (HA81745)Yes
Engage (HA81760)Yes
G2 Brake Boss (81792BB)Yes
Syncronizer (HA81725)Yes
Endeavor (81770)Yes
Genesis (HA81790)Yes
Blackbird (HA81726)Yes
HopkinsImpulse Digital (47325)Yes
Insight (HM47297)Yes
Brake Force (47225)No
Reliance (47284)No
Agility (47294 or 47295)No
MaxbrakeBrake ControllerYes
RedlineRedline TA900Yes
TekonshaProdigy (90185)Yes
Prodigy P2 (90885)Yes
Prodigy P3 (90195)Yes
Primus IQ (TK90160)No
PowerTrac (39523)Yes
Voyager (39510 or 9030)Yes
ValleyVA32812 BlackbirdYes
VA32811 PhantomYes

HBA-10 Cargo Towing Solutions (formerly Carlisle) Hydra Star Electric-Over-Hydraulic (EOH) Brake Actuator

Replaces HydraStar HSV381-7065

Installation Details HBA-10 Installation instructions

Customer Reviews

HydraStar Electric Over Hydraulic Actuator for Drum Brakes - 1,000 psi - HBA-10

Average Customer Rating:  4.7 out of 5 stars   (20 Customer Reviews)

Anodized aluminum electric-hydraulic actuator lets you use your brake controller (sold separately) to activate your trailer's hydraulic drum brakes. Vented end plate releases heat. Includes hardware. Hydraulic lines and breakaway sold separately.

- HBA-10

Been a year, haven't had one issues, very easy install. I went with the hydrastar unit so that i could utilize the brakes from a rear dana 60 axle, from a old service truck that i made into a trailer. The brakes function great. I recommend this unit to any one that is looking for a good solution to trailer braking using hydraulics, this system will also replace a surge brake system and operate much better. etrailer also had great follow up and customer care to see if I was satisfied with the unit which I am!

- HBA-10

I’ve been installing these HBA - 10 actuators on new trailers for a year now and they have been working great.

- HBA-10
by: 03/02/2021

Great product. Low maintenance. Small enough to put in almost any location. I put mine in a side tool box just above my trailer axles. Breaks engage as soon as pedal is engaged.

- HBA-10

Very good product, it works well with my trailer. Much better than electric drum brakes. Only down fall is I found it is sensitive to voltage spikes. I had a faulty alternator and the control board in the unit burnt out. Somewhat disappointed that replacement parts were not available to repair my current unit. Had to replace that whole unit just for a small circuit board. Great unit otherwise as far as function.

- HBA-10

I have a tandem axle dump trailer that came with factory hydraulic surge brakes. They worked sporatically at best, were very unpredictable, and eventually stopped working all together. I installed the hba 10 as well as an electric breakaway switch and eliminated the surge hitch all together. Works great. Far beyond my expectations.

- HBA-10

This company is excellent! They have things I didn’t even know I needed. Quick turn around time. Couldn’t be easier to get lights, hitches, jacks, brake controls (electric or electric over hydraulic). Been using this company for years and never had a problem.

- HBA-10

Still working as it should, no problems with the actuator. Completely satisfied! If only the rest of my braking system were as trouble free!

I am happy with the actuator and how well it is working
James - 04/12/2019

- HBA-10

I just got it put on the trailer so really haven't had a chance to try it . The part went on the 3 horse living quarters trailer which I hope to pull later today. The brakes activated properly, bleeding process was certainly a two man operation and took quite a bit of time.

- HBA-10

awesome product, I have installed 4 more for customers,, works great, very easy to install and do away with surge brakes,, its a 5 out of 5 ,,, ill be buying more

- HBA-10

Received our order today. It was delivered quickly and in great condition. Obviously we haven't had a chance to install nor use it yet so I can't speak to the review of that. But I will say that Cailee and etrailer did a fantastic job of getting what we needed to us asap! Thank you Cailee!

- HBA-10


- HBA-10

Night and day difference from the useless surge brakes on my boat trailer.

- HBA-10

The product was exactly as picture, etrailer did an outstanding job expediting this order, got the product the next day .

- HBA-10

Work Great Fast Shipping

Have Hydrastar HBA12 1200psiG7 on tandem boat trailer. Breakaway activates brakes well but brakes activated thru vehicle do not work.A check of power from vehicle to trailer indicates circuits are all good. Can hear contact noise from inside brake unit but pump doesnt start but thru breakaway activation the pump works well.Have been told the fault is in the Electronic Chip that activates the pump. Is this correct and if so can I purchase that part only? What part number do I order? Appreciate your reply. John B
-- comment by: John B - 10/23/2013

What brake controller do you have installed in the vehicle? Not all brake controllers will properly operate an electric over hydraulic actuator pump. Some require a different mode or setting to accomplish such. It also may be good to make sure the system is wired properly. Check out the wiring diagram towards the bottom of the page on the HBA-16 actuator.

-- Etrailer Expert Patrick B - 10/29/2013

- HBA-10

it arrived 2 days earlier than expected

- HBA-10

Service was exceptional as for the product is what is, replaced the same that was in service for 6 years, should have lasted a lot longer

- HBA-10

A+ fast service

- HBA-10


- HBA-10

- HBA-10


Ask the Experts about this Hydrastar Brake Actuator

  • Will the HydraStar Electric Over Hydraulic Actuator Work With 2018 Chevy Brake Controller
    The HydraStar Electric Over Hydraulic Actuator part # HBA-10 is an excellent upgrade option over a traditional surge brake actuator. I like this unit because it's much quieter and slimmer than others. It will work with the factory trailer brake controller in a 2018 Chevrolet according to HydraStar so you will not have any issues.
    view full answer...
  • Recommended Electric Over Hydraulic System for Kaufman 6 Max Car Carrier
    For your Kaufman 6 Max Car Carrier Trailer, I recommend the HydraStar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness - 1,600 psi # HS381-9067 if your trailer has disc brakes. If your trailer has drum brakes then I recommend the HydraStar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness - 1,200 psi # HS381-9066. If you just need the actuator itself, then you will use # HS381-8067 for disc or # HS381-8066 for drum.
    view full answer...
  • Weak Trailer Brakes Using Carlisle Electric Over Hydraulic Brake Actuator with 2014 Ford F-350
    First you have to make sure that the brake controller being used is rated for electric over hydraulic brakes. Or you have to make sure that you are using the adapter, # HBA-CAM. It sounds like that is what you meant when you said they have added the other part that is needed. So that leaves the trailer itself. If the braking is not where it should be then the brakes may need to be bled or adjusted. Follow the manual for the bleeding procedure. And on the brake adjustment you will turn...
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  • Process to Convert Trailer from Air-Over-Hydraulic Brakes to Electric-Over-Hydraulic Brakes
    If the brakes assemblies and hubs/drums on the subject trailers are actually 16-inches in diameter we have no compatible brakes. The largest electric and hydraulic drum brakes we have are 12-1/4 x 5, such as the left/right electric brake set # AKEBRK-12 which is rated for a 12K axle and the left/right hydraulic set # 23-408-409 also rated for 12K axles. We do have electric-over-hydraulic (EOH) actuators like the HydraStar Drum Brake Actuator # HBA-10 and the others shown on the linked...
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    Image 1 for
  • What Is Needed To Convert Trailer From Hydraulic Brakes To Electric Over Hydraulic
    I have attached a couple of helpful articles you can check out. They tell you in detail what is needed when adding electric over hydraulic brakes on a trailer. You will need to know the bearing and race sizes on your trailer. The easiest way to do this is by pulling the hub off and checking the inner and outer bearings for numbers. I have attached a drawing that shows where the numbers can typically be found. If you are unable to find the numbers you will need to use a digital caliper...
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    Image 1 for
  • Trailer Brake Lines Sucking In Air Using Hydrastar Electric Over Hydraulic Brake Actuator
    It doesn't sound like the pump on your Carlisle Hydrastar actuator # HBA-10, is out. It does sound like a possible issue with a seal, the cap, or something could be blocking the flow of fluid at the fitting that connects to the brake lines. Fluid in the brake lines may not leak out anywhere unless enough pressure is in the lines. I would not rule out the brakes or a wheel cylinder. Check the backs of the wheels and tires for any evidence of leaking fluid which would indicate a bad wheel...
    view full answer...
  • Replacement 4 Wire HBA-CAM for Older Carlisle Hydraulic Trailer Brake Actuator
    It sounds like you have an older generation of the Carlisle Hydrastar brake actuatuator. The current # HBA-CAM would only be compatible with 6th generation and newer actuators. It wouldn't be a compatible replacement for your 381-7061. The current 4 wire version is part 381-7063, but we do not offer it. If you were to use an aftermarket brake controller that's compatible with electric over hydraulic braking systems like the Tekonsha Prodigy P2 # 90885, you wouldn't need the # HBA-CAM...
    view full answer...
  • Brake Controller Recommendation for a Truck with Air Brakes and a Trailer with Electric Brakes
    The trailer brakes work on a separate circuit than the lights. You have a couple of options to control the electric brakes on the trailer. One option is to use an air over electric brake control, # HA100400C. This unit connects to the air brakes on the truck and when the brakes are applied it sends an electric signal back to the trailer brakes. The other option, and what I would do, is to use an electric brake controller like # 90885. For either of these controllers, the red wire...
    view full answer...
  • Testing the Hydrastar 1600 PSI Electric/Hydraulic Actuator for Proper Function
    I spoke to the manufacturer and he said that assuming the unit is getting a full 12 volts, the best thing to do would be to bench test it. A 12V power source will be needed to do so. Isolate the wires of the Hydrastar (black, blue, white, yellow) 1. Attach black wire to the positive terminal and white wire to negative terminal of the 12v battery. Nothing should happen 2. Attach black and blue wire to the positive terminal and white wire to the negative terminal of the 12v battery....
    view full answer...
  • Trailer Brake Controller that is Compatible with Electric Over Hydraulic Braking Systems
    There are only certain brake controllers that are compatible with electric over hydraulic braking systems. The Draw-Tite controller is not one of them but we do have several options that are electric over hydraulic compatible. Using one of them you could use any actuator you wanted. I know converting to electric over hydraulic brakes can be expensive so to save some money the most affordable controller that is compatible is the Hayes Engage, # HA81760. This is a time-delayed controller...
    view full answer...
  • Adding Brake Control to 1992 Ford F-800 with Air Brakes
    You have a few options to use electric brakes on a trailer with air brakes on a vehicle. You could use Warner brake control # 1300-80. These controllers tap into the vehicle air brake line and send an electrical signal back to the trailer brakes when you step on the vehicle brake pedal. The other option is to just use a regular brake controller such as # 90885. Electric brake controllers do not tap into the vehicle braking system at all. They only need an input signal that tells it you...
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  • How to Test The Hydrastar Actuator to Make Sure it is Operating Properly.
    When testing the HydraStar Electric Over Hydraulic Actuator part # HBA-10 it is a three pronged approach. The first step when no wires are connected to anything is to attach the white to ground and the black to 12V positive in this configuration the actuator should not operate if it does it needs replaced. The second is to leave the white wire attached to negative and twist the black and blue together and connect to 12V positive once done it should run and pressurize. If it doesn't...
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  • Converting Military M105A2 Trailer From Air Over Hydraulic Brakes to Electric Over Hydraulic Brakes
    You should just need an electric over hydraulic actuator such as # HBA-10 for drum brakes or # HBA16 for disc brakes. You should not need any additional brake lines or anything because the actuators work with the hydraulic lines and brakes that are already on the trailer. The tow vehicle will need to have a brake controller that is compatible with electric over hydraulic brakes, such as the P2, # 90885, and both the vehicle and the trailer will need to be equipped with matching trailer...
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  • Wiring a Brake Controller to a 2007 International Trucks 4300 Series
    We may have a solution for you. To wire a brake controller on your 2007 International Trucks 4300 Series, you need to wire the controller's red wire to the stop light circuit. If the only wire you've found for brake lights is tied to the turn signal lights, then that wire cannot be used. The reason is that the turn signals, once engaged, would activate the brakes. There may be a brake switch circuit that is sometimes abbreviated as the CHMSL circuit. Use a tester like part # 40376...
    view full answer...
  • Factory Brake Controller on 2010 Ford F350 Isnt Activating HydraStar Electric/Hydraulic Actuator
    The factory brake controller should be compatible with the # HBA-10 brake actuator. The first thing I'd recommend you do is closely examine the 7-way connector on the vehicle and on the trailer. A corroded or damaged connector would explain the intermittent problem your controller is having reading the trailer. If you need to replace the connector on the truck, part # HM40975 would be a good replacement, or for the trailer, you'd use # HM48510. Since the actuator is working with the...
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  • Brake Controller Compatibility With Hydrostar Electric Over Hydraulic Actuator
    The HydraStar Electric Over Hydraulic Actuator for Drum Brakes - 1,000 psi # HBA-10, is a great product. There are only certain brake controllers confirmed to work with this actuator. There are many factory integrated brake controllers and some time delayed controllers that won't work well with any Electric Over Hydraulic system. Obviously we want your trailer brakes to work properly every time you hit your brakes in the tow vehicle as well as when you hit the manual override on the...
    view full answer...
  • Carlisle HBA-10 Electric Over Hydraulic Brake Actuator Not Working with Dodge Factory Brake Control
    Your Hydrastar actuator is not cycling on to build pressure to apply the brakes when needed. This could mean that there is an electrical problem or a malfunction with the motor, or even a problem with the brake controller. I have included a picture of how the unit should be wired up. Any corrosion could be a cause of the problem. Make sure that the trailer and vehicle connectors are clean and free of corrosion on the pins and around back where the wires attach. You can also make sure...
    view full answer...
    Image 1 for
  • Converting Military Trailer Air Over Hydraulic Drum Brakes to Electric Over Hydraulic
    You are correct, there are 4 electric over hydraulic braking systems, from 3 manufacturers, that can be used to eliminate the air over hydraulic actuator on your M200A1 trailer. These systems all require a breakaway system to meet DOT safety standards. I will detail each system for you so you can select the one that will work best for your truck and trailer setup. First, the Dexter Electric Over Hydraulic Brake Actuator, # K71-650, would be a good choice because it will work with the...
    view full answer...
  • Carlisle Hydrastar Electric Over Hydraulic Trailer Brake Actuator Runs But Does Not Build Pressure
    The following are the troubleshooting tips from Carlisle: If the Brakes are slow to respond: Re-bleed the trailer brakes and atuator. If the trailer is equipped with drum brakes, re-adjust the drum brakes to the trailer manufacturer's recommended running clearance. Slow response can be caused by trailer wiring that is too small. Slow response can be caused by brake lines that are too restrictive on the trailer (small diameter/long length restrictive fittings/routing restriction) If...
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    Image 1 for
  • Troubleshooting Hydrastar Actuator that Works Half the Time
    It could be there is an electrical problem or a malfunction with the motor. You will want to make sure that the Hydrastar white ground wire is connected to the vehicle ground and not to the trailer. They are very particular about this ground connection and it must be connected to the vehicle ground. To further test the unit, leave on the blue, black, white, and yellow (or blue with white stripe) wires. Make sure it is disconnected from any other wires going to the tow vehicle or breakaway...
    view full answer...
  • Replacement Cap Recommendation for a Hydrastar Electric Over Hydraulic Actuator
    Yes we do. For the cap for the # HBA-10 you would need the part # HBA-BC.
    view full answer...
  • Could Trailer with Electric Over Hydraulic Brakes Have Trailer with Electric Brakes Connected
    So your electric over hydraulic brake actuator is receiving a standard brake controller output signal to tell it how to operate your EOH trailer brakes. So it would be possible that you could take this circuit (most likely blue wire) and extend it from where it connects to the actuator to the back of the first trailer so that you could then connect it to the electric brakes of your second trailer. You'd need 10 gauge wire like part # 10-1-1 (sold by foot) to get the circuit to the trailer...
    view full answer...
  • Wiring Diagrams for Hydrastar Electric Over Hydraulic Trailer Brake Actuators
    If it is a 1000 psi then it would be the Hydrastar for drum brakes. The newest one is # HBA-10 and it has different wire colors, see picture. So you know that black is 12 volt power in and white is the ground. Blue/white goes to the break away switch. So that leaves red and green. One of those two has to be input to the Hydrastar from an in-cab brake controller. The other, I am not sure of the function since the wiring for HBA-10 only shows 4 wire connections. It might be similar...
    view full answer...
    Image 1 for Image 2 for
  • Brake Controller for Freightliner with Air Brakes for Trailer with Electric Brakes
    For vehicles like your Freightliner that have air brakes we have brake controllers that are designed to connect to air brake system and control electric trailer brakes. For that we have the Hayes Air Actuated Trailer Brake Controller part # HA100400C which will work well. The part # PK12-724 is designed to plug into a 7-way round connector like what your semi-truck has and provide you with a 7-way blade type connector for your RV 7-way.
    view full answer...
  • Brake Controller for Electric Over Hydraulic Brakes
    I do have a great option for you, however your Tekonsha Prodigy RF Wireless Brake Controller 90250 is not compatible with electric-over-hydraulic brakes. Unfortunately you will not be able to use the controller with your trailer after converting the braking system. For an excellent brake controller that is compatible with EOH brakes I recommend taking a look at the Tekonsha Prodigy P2 # 90885. This is a wired proportional controller that will activate the trailer brakes at the same time...
    view full answer...
    Image 1 for
  • Troubleshooting HydraStar Actuator HBA-10 Not Working with 2012 Ford F-150, Factory Brake Controller
    I confirmed the compatibility of your 2012 Ford F-150 with integrated controller and the HydraStar EOH Acutator for Drum Brakes # HBA-10 with my technical contact at HydraStar. You will not need the # HBA-CAM or an aftermarket controller to use this system with your truck. You mentioned that you tested the brake controller signal on the truck's connector, but you will want to ensure that a 12V signal is reaching the # HBA-10 when you step on the truck's brake pedal. This can be done...
    view full answer...
  • Surge Brake Actuator Recommendation to Convert Trailer From Air Over Hydraulic Brakes
    Yes you can, all you need is a surge actuator that is compatible with drum brakes and you would be good to go. For one that has a lunette ring on it you would want the part Titan Zinc-Plated Brake Actuator # T4093200. This has an 8k capacity.
    view full answer...
  • Installing a Brake Controller on a Freightliner M2-106 with Air Brakes
    Trucks with air brakes might not have wire at the brake switch for a brake controller but I do recommend checking that first. The brake switch should be located above the brake pedal with wires going in and out of it. Use a circuit tester such as # 40376 to test the wires (the truck may have to be on, but not running). You need a wire that only shows power when the brake pedal is pressed and not when the headlights or turn signals are on. If you cannot locate a wire at the brake switch...
    view full answer...
  • Availability of Brake Controller that Connects to Air Brakes of Vehicle to Activate Electric Brake
    We do have a brake controller that is designed to connect to air brakes and then activate the electric brakes of a trailer. For that you'd want the Hayes brake controller part # HA100400C.
    view full answer...

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