Gunrunner John
excuse my ignorance as I am weak on tracing current flow. In the box you made for bell/whistle can you trace the current flow when each switch Is opened. It looks like to me that when the switch on the left is open, current would only flow through one diode assuming the current follows the path of least resistance ? Or would it also flow through the lower array of diodes? I just received the components to construct your controller
thanks
Dogdoc