Cheap (almost free) electric bilge pump
A windshield washer obtained from the junkyard can be used to make a 12 Volt bilge pump.
First, check to make sure the motor is functioning by connecting the motor leads to a car battery. If it runs, but screams and squeals, remove the motor from the housing, and put a small amount of grease on the motor shaft ends. Replacement motors are available for around $5 from auto stores.
Red in the drawing above shows where to cut in red. Make sure you don't cut into the motor compartment. Leave some of the plastic around the motor area for mounting purposes, and leave the outlet intact so you can attach a hose to it.
Silicone rubber can be used to seal the motor from water on the connection end.
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