Bilge pump

[Billy654]

I have a (new to me) 1980 Catalina 30. I noticed that the automatic bilge pump only works when the battery selector switch is on both. Am I missing something? Shouldn't it work when switch is on off?

[JimsCAL]

The automatic bilge should normally be connected to the house battery, bypassing the battery selector switch. Sounds like yours isn't wired that way.

[Waltthesalt]

Chase down the wires I think it's possible to do but wierd. I'd start by looking at the back of the battery switch. People usually bypass the battery switch and go directly from a battery on automatic bilge pumps ehrn the switch is off so when leaving the boat you have pumping power but the minimum number of circuts energized.