Connecting a Boat Trailer with a 5-Way and EOH Brakes to 2015 Ram 3500 with 7-Way Trailer Connector
Question:
Hello, I am looking at the 7-pole to 5-way adapter #HM47025 and wanted to know if this will work on my EZ-Loader boat trailer with electric over hydraulic brakes. My 2015 Ram 3500 receptacle has the brake contact on the lower right when facing the receptacle. Not sure what the center pin controls. Thank you for your assistance!
asked by: Jeff C
Expert Reply:
Tthe Hopkins connector, part # HM47025, will connect your 2015 Ram 3500's 7-way to your boat trailer's 5-way but it won't power the EOH brakes. Your truck's brake output pin is the in 5 O'clock position which is standard and the center pin is the reverse light circuit. The Hopkins connector uses that reverse light circuit for the 5th pin that's normally on a boat trailer for its electric reverse lockout.
Instead I'd cut the trailer's 5-way off and replace it with a 7-way. Part # HS381-9000 is a great option because it includes the junction box and connectors to make a clean install.
Products Referenced in This Question
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
Hopkins Heavy-Duty Trailer Coiled Wire Adapter 7-Way to 5-Way Flat with Nite-Glow
- Trailer Wiring
- Wiring Adapters
- Single-Function Adapter
- 0 - 5 Feet Long
- 7 Round - Blade
- Plug and Lead
- 4 Flat
- 5 Flat
- Hopkins
more information >
Continue Researching
- Q&A: Adjusting Dexter 10K Electric Trailer Brakes
- Q&A: Which Bolt Locking Hitch Pin Can be Keyed to a 2014 GMC Sierra 1500
- Q&A: Does BOLT Trailer Hitch Receiver Lock For GM Center Cut Key Fit 2021 Chevy Silverado
- Q&A: Will Bolt Trailer Hitch Lock part # BL7023582 Fit 2-1/2 inch Hitch on a 2011 GMC Sierra
- Article: Testing Trailer Brake Magnets for Proper Function
- Article: Stability Control for Heavy Duty Vehicles
- Q&A: Replacement Control Unit for a Kwikee Steps 909508000 Controller
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: Surviving the Night in a Teardrop Camper...During a Winter Storm
- Q&A: Factory Brake Controller Wiring Harness Location on a 2015 Mercedes Sprinter Motorhome
- Article: Trailer Hitch Receiver Sizes
- Q&A: Replacement Axle For 84 Inch 3,500 Pound Dexter Axle
- Article: Breakaway Kit Installation for Single and Dual Brake Axle Trailers
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)