Does Power Wire of Hydrastar Brake Actuator Need Diode Wired In
Updated 01/06/2025 | Published 01/05/2025 >
Question:
I purchase a Hydra star 1600 from you a while back. I understand that the wiring from the truck should be used to activate the Hydra star. The trailer is an Airstream. The black wire from the truck also charges the 12 volt house batteries . When disconnected from the truck the black wire will still be hot from the house batteries. Is that a problem? Black wire will be hot and white wire will be grounded but no activity on the blue wire. Should I place a diode between the house battery and the hydra star. Thank you for some advice here.
asked by: Richard K
Expert Reply:
Hey Richard, this is a great question but you do not need a diode on the black wire that runs to your Hydrastar actuator part # HBA16. The black wire is not what activates or primes the actuator as it's the blue wire that does that and that is what runs to the brake controller installed in the vehicle.
Product Page this Question was Asked From
Hydrastar Electric Over Hydraulic Actuator for Disc Brakes - 1,600 psi
- Brake Actuator
- Electric-Hydraulic Brake Actuator
- Boat Trailer
- Travel Trailer
- Disc Brakes
- Hydrastar
more information >
Featured Help Information
Instructions
Continue Researching
- Search Results: hitch pin
- Shop: Trailer Wiring
- Shop: Erickson Spare Trailer Tire Mount Kit
- Shop: Provider ST225/75R15 Trailer Tire with Silver Vesper Mod Wheel - 5 on 4-1/2
- Shop: Kodiak Hydraulic Brake Hose - FIF and 90-Degree Male Fittings w/ Stainless Flares - 1.5'
- Shop: Deka Heat Shrink Butt Connector - 12-10 Gauge - Nylon Insulation - Yellow - Qty 10
- Shop: etrailer 7-Way RV Style Connector with Molded Cable - Trailer End - 6' Long - RV Standard
- Shop: Bright Way Push-to-Test Trailer Breakaway Kit with 1-Amp Charger and 5 Ah Battery - Top Load
- Shop: Curt Vehicle Wiring Harness with 5-Pole Flat Trailer Connector - 60" Wire Lead
- Search Results: 8k drum
- Search Results: pintle ring
- Search Results: pintle hitch ring
- Search Results: hitch extension
- Search Results: straight tongue trailer coupler
- Search Results: trailer tongue
- Q&A: Ford Integrated Brake Controller Not Working Well with Trailer with Electric/Hydraulic Setup
- Q&A: Troubleshooting a 2025 Ford F-450 OEM Brake Controller W/ a Electric Over Hydraulic Actuator
- Q&A: Troubleshooting EOH Brakes With Hydrastar Actuator Not Working With 2024 Ford F-450
- Q&A: Do Hydrastar Electric Over Hydraulic Actuators Run All the Time When Brakes Are Applied
- Article: Trailer Wiring Diagrams
- Shop: Trailer Hitch
- Video: Firestone Ride-Rite Air Bags with Easy Mount Compressor Feature Breakdown
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Video: How to Choose a Trailer Brake Controller
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Shop: Suspension Enhancement
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Video: Curt T-Connector Vehicle Wiring Harness Review C56040


Richard K.
1/6/2025
Thanks for getting back so quickly. You are appreciated.