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See the Jabsco Lite Flush 58500-0012 12V connection points and wiring example. Open the diagram in Crimp to add your equipment and plan the cables between them.
Open this example as a new project. Use your own parts and cable lengths to make the plan yours.
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.
10 ft one way
12 V system
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.
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.
The 12 V Lite Flush 58500-0012 example represents the complete controlled toilet assembly's supply, using its 25 A fuse and 20 A design current. Follow the control, plumbing and cable-length tables; do not connect the internal motors individually from this diagram. Manufacturer installation manual
Wiring diagram
Open this example in Crimp to use your own parts and cable lengths. Review the assumptions and installation notes as you adapt the circuit.
The 12 V Lite Flush 58500-0012 example represents the complete controlled toilet assembly's supply, using its 25 A fuse and 20 A design current. Follow the control, plumbing and cable-length tables; do not connect the internal motors individually from this diagram. Manufacturer installation manual
Edit this wiring exampleInstallation notes
Guidance for this model, with sources linked beside the relevant advice.
Verified against the manufacturer's documentation (rev. 43010-0283 Rev D, 06/2023), checked 2026-10-01. Manufacturer documentation →
58500-0012 is the 12 V Lite Flush with a foot switch. The first press introduces rinse water; the second completes the flush sequence and leaves the bowl dry. The separate 58500-1012 version uses a control panel. This entry describes the complete toilet assembly and raw-water rinse pump, rather than a bare 240 W motor.
The manual's 12 V wiring table gives 20 A draw and a 25 A fuse. Feed the control box through an accessible isolating switch, with red positive and black negative. Size conductors using the full battery-to-toilet-and-return length in that table. The catalog terminals represent that incoming supply, with protection-based planning limits.
Keep the factory harness relationships intact: rinse-pump outputs, flush motor and foot-switch connectors are not interchangeable battery feeds. The control-panel socket is not the foot-switch socket. Do not bypass the control sequence by supplying a motor directly, and do not increase the fuse to cure a jammed pump.
The rinse pump is for raw water; this manual does not authorize connecting the assembly directly to pressurized fresh water. Use the specified inlet and discharge sizes and accessible seacocks. Follow the appropriate drawing for the rim's position relative to the waterline at every expected heel and trim angle.
Where required, the inlet-side vented loop belongs between the rinse pump and the bowl, not in the pump's suction line. A misplaced loop can stop priming while leaving the flooding risk unresolved. Secure hoses and supports, retain access to the pump, and check the particular outlet path to a holding tank or other permitted system. A two-wire electrical example cannot certify the toilet's plumbing.
Open the necessary seacocks for operation. Fill the bowl before use and confirm both stages of the foot-switch sequence, observing inlet flow, evacuation and leaks. Close the inlet and outlet seacocks after use and when the vessel is unattended, as the manual directs. Isolate electricity and close seacocks before opening the assembly; keep fingers clear of the pump impeller.
A weak rinse calls for checking the intake, seacock, air leaks and pump supply. A motor that runs but cannot evacuate calls for inspection of the discharge path and pump. Use compatible cleaners and winterizing procedures from the manual; aggressive solvents or abrasive cleaning can damage toilet parts.
Lite Flush manual: PDF pp. 2–6 identify 58500-0012 and explain operation, vented loops, the 20 A/25 A wiring table and control-box connections; pp. 7–9 cover servicing and faults. The marine ledger records the downloaded original.
Build it out
Add 58500-0012 to your diagram, then connect your batteries, chargers and loads. Crimp calculates cable sizes and checks the connections as you draw.
Every cable you draw there is sized against ABYC E-11, from the same tables as the reference on this page.
Technical reference
Check the model, ratings and connection points against your own unit before choosing installation hardware.
Check stud sizes, fuse type, run length and how warm the space gets against the gear you actually have before you order.
Catalog connection points, current direction and planning limits. Check the manufacturer's pinout and connector ratings before installation.
+
pos
positive · input
−
neg
negative · input
Method & provenance
Manufacturer specifications describe the equipment. Crimp calculates cable results from the circuit and assumptions you enter.
From the maker
Manufacturer, model, ratings and which terminal does what come from the catalog. A newer revision, or the nameplate on the unit in your hand, can say something different — when it does, the nameplate wins.
ABYC E-11
Sized against ABYC E-11 — the US reference, and what Transport Canada accepts as an alternative to TP 1332 for pleasure craft under 24 m. The run length and the current above are what drive the result. Crimp doesn't know how warm your space gets; draw the cable inside an engine-bay zone on the canvas and it sizes for the heat.
Next step
Open this example as a new project. Add your equipment and cable lengths, then review the sizing and checks for your setup.