Marko wrote;
Thanks all. I want a simple manual switch. If I forget to turn that one
off, I don't belong on the water. ;-)Thanks all. I want a simple manual
switch. If I forget to turn that one off, I don't belong on the water.
;-)
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I have a set up with 2 batteries using a Guest selector switch. I can
choose either battery or parallel both. And shut both batteries off
while I'm away. Works just fine...

Hope this helps.

Norm