That's faucet not fosset.  Unscrew the top of the faucet and LOOK at the
switch - is it broken?  Check for continuity along all of the wires.  Check for
12 volts at the faucet.   Then try "jumping" the switch with 12 volts from the
battery.  If it still does not work try jumping the pump at the wires just on top
of the tank.   Maybe it's a bad ground too.  Malcolm

Zoltan wrote:

> All the fuses are good.  Is there a generic problem that I can fix?
> What to test and how?
> Who knows?  Please let me know if you do.
> Zoltan