P501J-119N-3A
Jabsco HotShot HD5 Washdown Pump wiring diagram
12 V marine washdown pump with 70 PSI pressure switch and 5 GPM open flow. Maximum published operating draw is 16 A at 70 PSI; use the specified 20 A fuse. It is an intermittent-duty pump with automatic thermal reset, not a continuously running 16 A appliance.
- Nominal voltage
- 12 V
- Compatible systems
- 12 V
- Continuous draw
- 16 A
Wiring diagram
How the HotShot HD5 is wired.
Open this example in Crimp to use your own parts and cable lengths. Review the assumptions and installation notes as you adapt the circuit.
20 A fuse; at least the factory 14 AWG/2.5 mm² leads. The 1 m-per-leg example is within the companion IOM 6–10 ft round-trip range. Manufacturer installation manual
Edit this wiring exampleCable sizing for this example
Use the diagram as a starting point for your installation. Replace the example equipment and cable lengths with your own, and check the connections against your exact model's instructions.
1 m one way
12 V system
- Wire
- 2.5 mm² · 13 AWG
- Example fuse
- 20 A
- Design current
- 16 A
- Voltage drop
- 1.9%
Sized against ABYC E-11. The design current is the part's continuous draw. The length is one way; voltage drop includes an equal-length return.
Run-length and manufacturer assumptions
The editable example uses 3.048 m (10 ft) runs unless a shorter run is stated. Metric overviews round these to 3 m. Adapt the parts and lengths to your installation before choosing cable and protection.
20 A fuse; at least the factory 14 AWG/2.5 mm² leads. The 1 m-per-leg example is within the companion IOM 6–10 ft round-trip range. Manufacturer installation manual
Supporting parts
- 2 m total of 2.5 mm² (13 AWG) marine cable
- Terminations for 2.5 mm² cable, matched to the equipment's screw terminals, leads or studs
- 20 A fuse and holder on the positive run
- Heat-shrink, strain relief and terminal boots sized to the cable
Check stud sizes, fuse type, run length and how warm the space gets against the gear you actually have before you order.
Installation notes
Before you install.
Open a question for model-specific guidance and sources.
Verified against the manufacturer's documentation (rev. P501J-119N-3A Rev A, April 2024), checked 2026-10-01. Manufacturer documentation →
Match the washdown part number
P501J-119N-3A is the 12 V HotShot HD5 package with a 40-mesh inlet strainer and trigger nozzle. Its published supply range is 9–13.6 V. Open flow is 5 US GPM, while maximum pressure and pressure-switch cutoff are 70 PSI; those values do not occur simultaneously. The 16 A catalog demand is the specified maximum operating draw at 70 PSI, with startup current unpublished. Energy estimates must use actual washdown run time.
Retain 20 A protection and adequate extensions
Connect red to positive and black to negative, with the specified 20 A fuse and an accessible pump switch. Factory leads are 12 inches of 14 AWG, identified by Jabsco as 2.5 mm². Do not extend them with smaller conductors. The companion HD installation manual sizes by total positive-plus-return length: 14 AWG/2.5 mm² for 6–10 feet total, then larger cable for longer routes. A one-metre outgoing and one-metre return example fits that range; the fuse does not authorize reducing the conductor size.
Mount dry and plumb the inlet correctly
Mount with its rubber feet on a rigid surface above the waterline, dry and ventilated. It may be horizontal or vertical with the pumphead down. Fit the supplied strainer upstream, follow the head’s flow arrow and secure correctly sized flexible hose and retained port fittings. The maximum dry-prime lift is 8 feet (2.4 m), not a target for every installation. A through-hull supply needs the vessel’s appropriate accessible shutoff and sound hose installation.
Commission the pressure switch and respect duty
Open the discharge nozzle, confirm the inlet is in water and let the pump prime. Closing the nozzle should let pressure rise until the pump stops; reopening should restart it. Check every joint for leaks and switch off manually after use. The pump is rated for intermittent service. Its thermal cutout can reset and restart automatically after cooling, so isolate the supply before servicing. A cycle that overheats, repeatedly restarts with the nozzle shut or struggles to prime calls for correcting the installation, not a larger fuse.
Manual and scope
Jabsco installation manual, P501J-119N-3A Rev A, April 2024; datasheet p. 2 electrical/duty/lead table; companion HD IOM pp. 4–5 mounting, polarity and total-length wire table. The original PDF is retained in the marine source ledger. The drawing represents the identified electrical interfaces; it does not simulate the equipment’s mechanical performance, radio signals or fluid system. Unpublished connector ampacity and startup current remain unspecified.
Technical reference
Specifications and terminal map.
Check the model, ratings and connection points against your own unit before choosing installation hardware.
Catalog specification
12 V marine washdown pump with 70 PSI pressure switch and 5 GPM open flow. Maximum published operating draw is 16 A at 70 PSI; use the specified 20 A fuse. It is an intermittent-duty pump with automatic thermal reset, not a continuously running 16 A appliance.
- Nominal voltage
- 12 V
- Compatible systems
- 12 V
- Continuous draw
- 16 A
Terminal map
Catalog connection points, current direction and planning limits. Check the manufacturer's pinout and connector ratings before installation.
Red +
positive · input
Black −
negative · input
A dash means a current rating is not specified here.
Sources and sizing method
Equipment specifications. Model details, ratings and terminal roles come from the catalog. Check your unit’s label and current manufacturer documentation for its exact revision.
Example sizing. Sized against ABYC E-11. Boats built to UK or EU rules answer to ISO 13297 — check these figures against it before you build. Results use the example current and run length shown above. Set your actual equipment, lengths and installation conditions in Crimp before choosing hardware.
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