Well, I must have too much time on my hands, but decided to change out the switches on the hall panel.
The ceiling light switch (12v), when turned on after having been off for a while would hesitate momentarily before completing the circuit. This is indicative of a failing switch.
So, I went to the local auto parts store (Checker, in this case) and purchased 3 new switches - each has a different color LED as an "On" indicator.
For "Earth", I tapped into the black wire that goes into a 3-wire connector and then onto the Fantastic Fan.
If anyone wants them, I have two of the old switches in my pocket that are good.