I just installed an electric bilge pump. I put mine on the same line as the manual gusher pump. You will need a check valve after the pump so that it does not short cycle. This is not the greatest arrangement, but, it is the easiest. When wiring the pump it is best to go directly to battery #1 and then the breaker panel. This enables the pump to work when the battery switch is off and you are not on your boat. Be sure to remove your battery leads and test the continuity of the circuit. There should be no continuity when the pump is off or it will kill your battery. Good luck!
