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Old 06-30-2014, 09:13 AM   #15
Billylll
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City: Tuckerton, NJ
Country: USA
Vessel Name: WIRELESS ONE
Vessel Model: 36 Gulstar MarkII
Join Date: Mar 2011
Posts: 937
Quote:
Originally Posted by rwidman View Post
If everything else is working and wired properly, you should read 12 volts across the float switch when it is in the "off" position and zero volts when it is in the on position.

Trying to read the voltage across the switch tells you nothing.

The bilge pump circuit is no different than a lighting circuit. Power is supplied from the positive side battery through a fuse or circuit breaker, then a switch, the pump motor, and back to the negative terminal of the battery. There may be more than one switch. A power switch and a float switch.
I agree Ron the circuit isn't that complicated.
Bill
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