Parts Needed to Convert Hydraulic Brakes to Electric Brakes on a Boat Trailer 3.5K Axles
Question:
My boat trailer has hydraulic brakes that are always locked up. I removed the brakes to at least be able to move the trailer. How do I change to electric only? Can I use the same brake hubs? Current hubs are Trailer Buddy Unique Functional product HD 1377. Inside dia. is 10in, outside dia. is 10 5/8in. 5 open thread holes for mounting tire with bolts, not lugs.
asked by: Fran
Expert Reply:
To change your boat from hydraulic brakes to electric brakes you will need to replace the hubs and brake assemblies. The UFP hubs that you have do not have a surface suitable for a brake magnet. You will also need to add wiring for the brakes and a breakaway battery.
Here is a list of parts I recommend for your trailer:
-3.5K Brake Assemblies # AKEBRK-35-SA
-3.5K Galvanized Hubs # AKHD-545-35-G-EZ-K
or
-3.5K Painted Hubs # AKHD-545-35-EZ-K (if you don't want to spend the extra money on galvanized)
-7-Way Upgrade Trailer Wiring Kit # HS381-9000
-12 Gauge Wire # 12-2-1 (Sold by the foot. This will run from the junction box back to the brake assemblies)
-Heat Shrink Butt Connectors # DW05745-5
-Breakaway Battery Kit # 3802346
For your vehicle, you will need a 7-way trailer connector if you don't already have one and you will need a brake controller. If you'd like some guidance or recommendations on equipping your vehicle, please let me know what vehicle you have and whether or not it has a factory tow package.
I've attached a few help articles and videos for you to check out.
Products Referenced in This Question
Jacketed 2 Wire (Brake Wire) - 12 Gauge - per Foot
- Wiring
- Wire
- Jacketed Wire
- 2 Wire
- 12 Gauge
- Deka
more information >
Bright Way Push-to-Test Trailer Breakaway Kit with 1-Amp Charger and 5 Ah Battery - Side Load
- Trailer Breakaway Kit
- Kit with Charger
- Side Load
- Single-axle
- Tandem-axle
- LED Tester
- 1 Amp Charger
- Battery Included
- 5 Ah
- Bright Way
more information >
etrailer Electric Trailer Brakes - Self-Adjusting - 10" - Left/Right Hand Assemblies - 3.5K
- Trailer Brakes
- Electric Drum Brakes
- Standard Grade
- Self Adjust
- 10 x 2-1/4 Inch Drum
- 3500 lbs Axle
- etrailer
more information >
Easy Grease Trailer Hub and Drum Assembly for 3.5K Axles - 10" - 5 on 4-1/2 - Pre-Greased
- Trailer Hubs and Drums
- Hub with Integrated Drum
- Easy Grease
- EZ Lube
- Pre-Greased
- L68149
- L44649
- For 3500 lbs Axles
- 1/2 Inch Stud
- 5 on 4-1/2 Inch
- 13 Inch Wheel
- 14 Inch Wheel
- 14-1/2 Inch Wheel
- 15 Inch Wheel
- etrailer
more information >
Easy Grease Trailer Hub/Drum Assembly for 3.5K Axles - 10" Diameter - 5 on 4-1/2 - Galvanized
- Trailer Hubs and Drums
- Hub with Integrated Drum
- Easy Grease
- EZ Lube
- L68149
- L44649
- For 3500 lbs Axles
- 1/2 Inch Stud
- 5 on 4-1/2 Inch
- 13 Inch Wheel
- 14 Inch Wheel
- 14-1/2 Inch Wheel
- 15 Inch Wheel
- etrailer
more information >
Deka Heat Shrink Butt Connector - 12-10 Gauge - Nylon Insulation - Yellow - Qty 5
- Wiring
- Wire Connectors
- Butt Connectors
- 12-10 Gauge
- Deka
more information >
Wiring Kit for Hydrastar Electric Over Hydraulic Actuators
- Accessories and Parts
- Brake Actuator
- Disc Brakes
- Hydraulic Drum Brakes
- Wiring
- Hydrastar
more information >
Product Page this Question was Asked From
Tekonsha POD Trailer Brake Controller - 1 to 2 Axles - Time Delayed
- Trailer Brake Controller
- Time Delayed Controller
- Electric
- Automatic Leveling
- Under-Dash Box
- Dash Mount
- Up to 2 Axles
- Indicator Lights
- Up to 360 Degrees
- Tekonsha
more information >
Featured Help Information
Instructions
Miscellaneous Media
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