Oh well... my problems are more mundane these days. But, here's my current dilemma: I'm doing a little household renovation. I need to add lighting at the bottom of my basement steps which are currently lit from the top of the stairs with a 3-way switch arrangement (switches at top and bottom of stairs). This normally wouldn't confound me; but drywall does. That is, the... 3-Way Electric Circuit - Possible Secondary Slave Circuit?