6 editable schematics

Boat wiring examples

Keep the bilge pump powered, retrofit a LiFePO4 house battery, or plan solar and separate-bank charging.

Bilge pump with an always-on supply

Keep the automatic bilge circuit powered when you switch off the rest of the boat.

Replace the house battery with LiFePO4, retain a lead-acid starter battery and charge through a current-limited DC–DC charger.

Follow a solar panel through its controller to a house battery, chartplotter and navigation lights.

Give the trolling motor its own battery and keep the chartplotter on a separate supply.

Use separate charger outputs to replenish two batteries without joining their positive terminals.

See how a 1–2–Both switch feeds the same boat circuits from either battery.

Based on manufacturer wiring diagrams. Preview an example for its sources and installation notes.