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Hydrastar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness - 1,000 psi

Hydrastar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness - 1,000 psi

Item # HS381-9065
Our Price: $951.49
Brake Actuator
Shipping Weight: 21 lbs
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Vented, marine-grade aluminum electric-hydraulic actuator lets you use your brake controller (sold separately) to activate your trailer's hydraulic drum brakes. Includes wiring, 7-way harness, and breakaway. Brake lines sold separately. 1-800-940-8924 to order Hydrastar brake actuator part number HS381-9065 or order online at etrailer.com. Free expert support on all Hydrastar products. Great prices and Fastest Shipping for Hydrastar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness - 1,000 psi. Brake Actuator reviews from real customers.
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Hydrastar Brake Actuator - HS381-9065

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

Vented, marine-grade aluminum electric-hydraulic actuator lets you use your brake controller (sold separately) to activate your trailer's hydraulic drum brakes. Includes wiring, 7-way harness, and breakaway. Brake lines sold separately.


Features:

  • 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
    • Included 7-way trailer connector transmits 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
  • Electronic, proportional pressure valve ensures that braking is smooth and effective
  • 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
  • Built-in bleeder screw on actuator lets you easily flush air out of your brake lines
  • Durable extruded aluminum construction provides superior corrosion resistance
    • Marine-grade gasket and stainless steel hardware make actuator ideal for marine use
  • Breakaway system activates your trailer's brakes if the trailer disconnects from the tow vehicle
    • Battery charger ensures the system's battery is always charged
    • Weather-resistant polymer case is top loading for easy access from above
    • Built-in mounting bracket offers simple installation
  • Insulated 7-way, RV-style trailer connector is molded to protect wires and terminals
  • Weatherproof, corrosion-resistant 7-pole junction box protects wires, eases installation, and makes diagnostics simple
    • Ring terminals and butt connectors included for connecting wiring
  • Wire loom protects wiring from the elements and allows wires in and out along any point of the loom for easy installation
  • Mounting pads have adhesive backing for securing cable ties
  • Kit includes:
    • Hydrastar marine electric-over-hydraulic actuator (Model MHBA-10)
    • Breakaway system
    • 7-Way trailer connector
    • 7-Pole junction box
    • 6' Split wire loom
    • 4 Mounting pads
    • Mounting and wiring hardware
  • DOT compliant
  • Made in the USA


Specs:

  • 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"
  • Actuator dimensions: 11-3/4" long x 3" wide x 7-3/8" tall
  • Actuator wire configuration:
    • Black: 12-volt power
    • Blue: brake controller
    • Yellow: breakaway
    • White: ground
  • Battery capacity: 5 amp-hours
  • Breakaway battery case dimensions: 5-7/16" long x 4-1/4" wide x 4-1/4" tall
  • Battery dimensions: 3-7/8" long x 3-1/2" wide x 2-11/16" tall
  • Breakaway switch lead wire length: 7-1/2"
  • Trailer connector length: 6'
  • Trailer connector wire gauges:
    • Black/white: 10 gauge
    • Blue: 12 gauge
    • Brown/red/green/yellow: 14 gauge
  • Junction box dimensions: 6-3/4" long x 3-1/2" wide x 2-1/4" tall
  • Split wire loom length: 6'
  • 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 stainless steel hardware. The included 7-pole junction box with color-coded studs makes it simple to splice into your trailer's wiring and to connect the provided 7-way trailer connector. Once the actuator is correctly wired, you can connect your trailer's hydraulic brake lines to the 3/16" female port. Lines and fittings are sold separately.


Durable, Marine-Grade Construction

The Hydrastar Marine actuator is ideal for use on boat trailers. Just like other Hydrastar electric-over-hydraulic actuator models, this system is built of extruded anodized aluminum for superior corrosion resistance. The weathertight seals protect internal components from the elements. The Hydrastar Marine actuator also features marine-grade gaskets and stainless steel hardware that won't rust. These extra features make it perfect for marine applications.


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.


Breakaway Kit

Required by law in most states, a breakaway system will activate your trailer's brakes in the unlikely event that your trailer disconnects from your tow vehicle. This kit wires to the included battery and to the Hydrastar actuator. If your trailer separates from your tow vehicle, the breakaway kit signals the actuator to apply the brakes.


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
VehiclesFord2005-2006Yes
2007-2008NoYes
2009-2015Yes
Dodge2010-2015Yes
GMC/Chevy2007-2015NoYes
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 or 47285)Yes
Agility (47294 or 47295)No
MaxbrakeBrake ControllerYes
RedlineRedline TA900Yes
RedlineTA900ANo
RedlineTA1000No
RedlineTA1100No
RedlineTA1200No
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


381-9065 Cargo Towing Solutions (formerly Carlisle) Hydra Star Marine Surge Brake Conversion Kit - 1000 psi - Model MHBA-10-CON






Customer Reviews

Hydrastar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness - 1,000 psi - HS381-9065

Average Customer Rating:  4.6 out of 5 stars   (7 Customer Reviews)

Vented, marine-grade aluminum electric-hydraulic actuator lets you use your brake controller (sold separately) to activate your trailer's hydraulic drum brakes. Includes wiring, 7-way harness, and breakaway. Brake lines sold separately.

by:

This is the BEST way to convert your surge brakes to electric. Pared perfectly with my 2014 F150 with the electric trailer brake option. Controls work great and this specific 1k PSI version easily handles my trailer and 21' SeaRay boat.



by:

Most of the items in this package were top shelf! The one exception is the 7 way harness supplied. The harness was not wired following standard the color code for trailer lighting. The red and yellow wires were reversed and the brown and green wires were reversed in this harness. This error consumed quite a lot of time troubleshooting the trailer lights until I wired the trailer and performed a plug pins to wire check and found the errors.

Richard

8/19/2022

It works fine after I discovered the color coding on the pig tail was not correct.



by:

This is an excellent device. After years of towing camping trailers with electric brakes, I got used to the control that provided: a bit of sway starts and all you have to do is activate the trailer brakes alone via the controller and everything settles down....so in comparison the surge brakes on my new 6000 lb boat trailer outfit were not doing it for me. Plus-- no trailer braking while backing down a slippery boat ramp?? So this was such a great solution. I can back down the boat ramp with full control at all times, and can adjust braking on the road with the boost and gain functions of my P3. Oh one thing- not all controllers work with this! Had to switch my Prodigy RF for a P3. I had the trailer brake system installed by my mechanic but I did the wiring myself. The light and brake connection outputs from my VW Touareg factory 7-way did not match the instruction's colour diagram but I figured it out eventually. Probably just a VW thing.

Michael

3/29/2021

Continues to be brilliant. Such a secure feeling backing down ramps knowing the trailer is being braked even in reverse. Have now moved it to an Audi Q7 - plug and play, the connector was the same as the Touareg



by:

I bought this as I was replacing a worn out surge brake set up.

I went with the electric hydraulic set up (after discussing options with Ricky S. Thanks!) as I wanted to address two issues: 1) better braking for an 8,500lb boat/trailer configuration; and 2) be able to use the Reese SC Weight Distribution w Sway Control set up with the Reese Pole-Tongue Adapter for Weight Distribution Systems.

This is an amazing upgrade! Backing up is now easy, I have brakes loading/unloading the boat on the ramp now, and vehicle stops better without the "pushed around" feeling that I used to get from the surge brakes. Additionally, it allowed me to make my vehicle safer by using the WD hitch as recommended by the manufacturer.

While this was a more expensive option that a straight surge brake replacement, it was probably the best few hundred dollars I've ever spent!



by:

Good looking product. Everything was included as I expected, the length of the truck plug whip is a good length for a universal kit. All the colors for wiring in the box are also labeled, that was nice to see. That will help with installation time. This is being installed on a boat trailer with a swing away hitch so the hitch neck is short but it looks like everything will fit without getting it all wet.



by:

Put the product on an ambulance simulator used in training EMS personell. It was easy to install and worked as expected. We would order again if need came up>

Emergency P.

8/1/2018

We installed the brake system on a customers trailer...they are happy with the system and we have not had any issues to where the trailer would come back for service. We would use the product again if needed.



by:


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See what our Experts say about this Hydrastar Brake Actuator

  • Recommended Trailer Breakaway Kit and Hub/Drums and Hydraulic Brakes for Trailer with Dexter Axle
    You can use Tekonsha Breakaway Kit # 50-85-313 along with your HydraStar EOH Drum Brake Actuator # HS381-8065. If you prefer, we also offer the HydraStar Marine drum brake actuator kits # HS381-9066 (1200-psi) and # HS381-9065 (1000-psi) that include breakaways and 7-way wiring parts. To find compatible hub/drums you will need to find the bearing part numbers from your current hub. Please refer to the linked diagram to see how these part numbers appear. You want to match up the axle weight...
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  • Replacement Filler Cap for Hydrastar HBA Electric Over Hydraulic Actuator
    We do have a replacement filler cap for the HydraStar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness # HS381-9065 you have. To replace the cap what you need is the Replacement Filler Cap for HBA-Series Hydrastar Actuators # HBA-BC.
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  • Is There a Way to Use Electric Brake Controller with Hydraulic Trailer Brakes
    If the electric brake controller installed in your F-350 is compatible with electric over hydraulic brakes, then you can tie the two systems together by installing an electric over hydraulic actuator on the trailer. Chances are your military trailer doesn't have a standard 7-way trailer connector, so I recommend the HydraStar # HS381-9065 because it includes a 7-way trailer harness as well as a breakaway kit, also required to complete the conversion. A junction box and all ring terminals...
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  • Which HydraStar EOH Actuator for Seasport Boat Trailer With 3500-lbs Drum Brakes
    In order to use the # AKFBBRK-35-D as electric over hydraulic brakes, I recommend using the HydraStar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness - 1,000 psi # HS381-9065, which is the correct actuator for trailers with axle capacities of less than 7000-lbs each; this makes it perfect for your 4000-lbs trailer. I really like kit this since it comes with all of the parts you're going to need to make the switch from a pure hydraulic system to an electric over...
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  • Disc Brake Kit for Converting Trailer with 84 Spindles to Electric Over Hydraulic Disc
    The Kodiak Disc Brake Kit # K2R526D wouldn't be ideal for you since you have an 84 spindle as this kit fits idler hubs that fit the 42 spindle. A better option would be the Kodiak kit part # K2HR35D which comes with hub/rotors that fit the 84 spindle. Then for an actuator kit that comes with everything needed plus an actuator with the best reaction time and reliability you'd want the Hydrastar part # HS381-9065.
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  • Recommended Kodiak Disc Brake Kit for 3,500 Pound Tandem Axle Trailer
    The Kodiak Disc Brake Kit # K2HR35DS is for one axle. So you need to purchase two of them for your trailer. Kodiak does not offer a tandem axle DAC/SS kit at this time. If you need an actuator as well, you can use the HydraStar Marine Electric Over Hydraulic Actuator # HS381-9065 if you have electric over hydraulic brakes. If you have surge brakes you can use # T2480000. These will work with Kodiak brakes and keep you from having to piece everything together. For a Kodiak tandem brake...
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  • Brake Controller Recommendation Compatible with Hydrastar Electric Over Hydraulic Actuator
    I was not able to find any information on a Reese F333 brake controller online. Are you sure that is the part number? For a controller that is compatible with the Hydrastar # HS381-9065 we have the P2 part # 90885 which would be an excellent choice. The P2 is made by the same company as Reese as well. This is our best selling brake controller because of how well it works and how easy it is to setup. This is a proportional brake controller that senses the amount of braking the tow vehicle...
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  • Recommended Electric Over Hydraulic System for Boat Trailer
    Unfortunately, I can't find any information on the bolt hole mounting locations on your Tie Down model 125 actuator. So, I've linked the page to our 2 inch and 2-5/16 inch hitch ball couplers that are bolt on so you can see what will fit your measurements. Each of our product descriptions should tell you the distance between the mounting holes. If you want to send me your measurements and trailer weight, I'd be happy to give you a recommendation. For your EOH brakes, I recommend the...
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  • Recommended Electric Over Hydraulic Conversion for Dutchmen Voltage 3818 Toy Hauler Triple Axle
    We do have the ability to convert your Dutchmen Voltage 3818 to Electric over Hydraulic brakes. First you will want the brake assemblies and for those, I recommend the Hydraulic Brake Kit - Uni-Servo - Free Backing - 12" - Left/Right Hand Assemblies - 5.5K to 7K # AKFBBRK-7 (one kit per axle). Then you will need brake lines like the Deluxe Hydraulic Line Kit - Tandem Axle - Drum # 9579-2 along with the Hydraulic Line Kit, 3rd Axle - Drum and Disc # 9579-01. Then I recommend the HydraStar...
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  • Recommended Hydraulic Brake Assemblies, Actuator, And Brake Lines For Dual Axle RV
    For your conversion to hydraulic brakes on your 7,000 lb dual axle RV, I recommend the Hydraulic Brake Kit - Uni-Servo - Free Backing - 12" - Left/Right Hand Assemblies - 5.5K to 7K # AKFBBRK-7. These assemblies are side specific and are labeled for you. These will work with your current hub and drum assemblies. For installation and adjustment, you will want the Brake Adjustment Spoon for Drum Brakes # W80630. If you need the mounting bolts for these assemblies, I recommend # BRKH12. If...
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  • Can Hydraulic Surge Brake Actuator be Locked Out for Electric Brake Conversion
    The Demco Channel Tongue Trailer Coupler # DM12717 and other tongues like it are meant to be mounted on the outside of the frame. None of our couplers will fit a 3-1/2" frame so it would be better (and more cost-effective) to just lock out your older hydraulic coupler. We do have everything that you need to convert your trailer from hydraulic to electric brakes. I have attached a helpful article that shows everything you need. If you let me know what size axle(s) you have I can make some...
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  • How To Use Ram Truck with Factory Brake Controller with Surge Brake Trailer Using EOH Actuator
    In order to use the trailer brakes with an electric trailer brake controller you'll need an electric over hydraulic actuator if you don't already have one, I recommend the Hydrastar Electric Over Hydraulic Actuator part # HS381-9065 for drum or part # HS381-9067 for disc. In order to make an electric over hydraulic actuator work with a factory trailer brake controller you'll just need an adapter. I recommend the Hydrastar Electric Over Hydraulic Actuator Adapter Module part # HBA-CAM which...
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  • Parts Needed to Replace Hydraulic Brakes with Electric Brakes
    To determine what the correct hub and drum/brakes are for your trailer you will need to remove a hub and note what the part number of your inner/outer bearings are as well as your grease seal. Newer axles have more of a standard fit when it comes to hubs which can be determined by the axle weight capacity, but since your trailer is a 1997 it would be best to verify the bearings and seal. If you cannot find a part number on those components then you can use a digital caliper and measure...
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  • Does the Hydrastar Marine Actuator Work w/ the RedArc Tow Pro Elite Brake Controller?
    Yes, the Hydrastar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness item # HS381-9065 will work with the Redarc Tow-Pro Elite Trailer Brake Controller item # RED44FR. The Tow-Pro Elite works with electric over hydraulic brakes.
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  • Electric Over Hydraulic Actuator Compatibility with Drum Brakes on Car Trailer
    The HydraStar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness - 1,600 psi # HS381-9067 is designed for disc brakes only. The pressure of this system is far too high for drum brakes so it will not be compatible. For your car trailer with drum brakes, I recommend the HydraStar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness - 1,200 psi # HS381-9066 if the axles are 8,000 lbs or larger. If under 8K axles, then use 1,000 psi # HS381-9065.
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  • Parts Needed to Convert From Hydraulic Surge Brakes to Electric Over Hydraulic Brakes
    You won't need to replace your trailer's drums or brakes unless they need replacing anyway. You can keep drum brakes with an electric over hydraulic system. What you will need is an EOH actuator, a breakaway kit, and an electric brake controller. On a 6,500 pound boat trailer I recommend the HydraStar Marine EOH Actuator # HS381-9065. It's for trailers up to 7,000 pounds and is designed specifically for boat trailers. It also includes wiring and mounting hardware for the install....
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  • Does Hydrastar Marine Electric Over Hydraulic Actuator Require a Mounting Pad
    The Hydrastar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness # HS381-9065 mounts directly to the trailer frame and does not require any mounting pads. I checked with Hydrastar and they recommend the unit get mounted level with the filler side up. This would work well for your tandem axle drum brake trailer.
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  • How to Convert Hydraulic Drum Brakes to Electric Over Hydraulic EOH
    In order to convert the hydraulic drum brakes you have on your trailer to electric over hydraulic (EOH) you will need a electric over hydraulic actuator, breakaway kit, brake controller, trailer wiring harness, and trailer coupler. We do have all of these components for you but not in an all inclusive kit. For the electric over hydraulic actuator, breakaway kit, and trailer wiring I recommend the HydraStar Marine Electric Over Hydraulic Actuator part # HS381-9065. This kit contain the...
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  • How to Find Correct Replacement Hydraulic Surge Brake Actuator for Trailer
    In order to find out what you need for a replacement actuator you will want to start by finding out what kind of brakes you have. A different brake actuator is needed if you have drum brakes or disc brakes. You will also want to choose a replacement that meets or exceeds the weight of your trailer and probably one that fits the same size ball your current coupler has. Occasionally you may be able to pull a part number off of your current actuator to see if a direct replacement is available. Assuming...
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  • Can Actuator, Harness and Brake Lines be Purchased as a Kit?
    The HydraStar Vented Marine Electric Over Hydraulic Actuator # HS381-8065 is available in a kit. The HydraStar Marine Electric Over Hydraulic Actuator with Breakaway and 7-Way RV Harness # HS381-9065 features the actuator, breakaway system and 7-way connector. The only other piece you'd need is the brake lines; for a single axle you would want the HydraStar Hydraulic Brake Line Kit # HS496-151 and for a double axle you would want # HS496-152. I've added links to video reviews of these...
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  • Can Electric Over Hydraulic Actuator be Submerged when Launching Boat
    I would not recommend submerging the actuator of the HydraStar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness # HS381-9065. Is there anyway you could lower the boat on the bunks maybe so that it would launch with less of the trailer in the water?
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  • How to Wire a HydraStar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness
    I have provided an electrical schematic below that shows how the electric over hydraulic actuator # HS381-9065 gets wired to the breakaway kit that comes with the kit. I have also provided a link to a helpful article we have when wiring up your 7 pole.
    view full answer...
    Image 1 for
  • Recommendations To Use Brake Controller With Boat Trailer
    Yes. Electric brakes can work fine on boat trailers. I recommend using components that are galvanized or otherwise more protected and unplugging your trailer from the electrical connection before backing into the water to unload or load. You can use the junction box kit # HS381-9000 to make these connections, but again, disconnect before submersion to prevent electrical damage. You can use # 10-2-1 to wire your brakes on each side of your trailer. Let me know the size of your axle...
    view full answer...

Do you have a question about this Brake Actuator?


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Randy B
Installed by:
Randy B
Employee Jameson C
Expert Research:
Jameson C
Employee Kathleen M
Video by:
Kathleen M
Employee Wilson B
Updated by:
Wilson B
Employee Manda E
Updated by:
Manda E
Employee Amanda M
Written by:
Amanda M

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