I must be having an obtuse moment because I'm having trouble see what
you mean. Any chance you could sketch it?

Is this change necessary to use an ordinary 12 V. relay or just an
improvement?

--

Roger Long



"barry lawson" wrote in message
...
Change the circuit so that the relay coil is in parallel with the
pump, and
the relay coil is in parallel with the upper switch. Any old 12V
relay where
the contacts will carry the load of the pump will do.