MikeMl
got your addition today, thanks
switch for demonstration model will be push button > for website design prototype, switch will be relay controlled by wall-mount intermatic timer
9V DC transformer stopped working >> ?? it was old >> or the ends grounded out
new transformer fresh out of box >. all spectrum P/N: AD-121AN
input 110V AC > output 12V DC 1000mA (1Amp) 2.1mm, center positive
I am studying your schematic quick as possible > some questions will be answered by your addition
Question 1: the 2 wires on DC transformers are marked > which of 2 wires is negative? I assume wire marked with long dashes is negative.
Question 2: on the schematic, ground goes to positive, correct?