Norm, I've gotten myself in a bit of a muddle because technically speaking a normally open (NO) switch is an electrical switch that is in an open state when not activated. When activated, the switch closes the circuit and allows current to pass through. Normally open means that the switch or contact (when it is not compressed or activated) doesn't let current flow through in its normal state.
As this switch is closed in the off position, that technically means it is a N/C switch, but as the "activation" in this case is to kill the engine, I guess that is why it is viewed here as an N/O switch? Is that correct or am I getting myself confused?
I do understand that the momentary push button has to be an N/O switch.
