Current situation: Switches at bottom and top of staircase control light fixture in upper hallway.
My wife would like: Another light added (no problem) and another switch added near the bedroom doorway (opposite upper landing switch).
How would I go about wiring three 3-way switches to control the upper hallway lights? In all my books, I can find no method of doing this, just the usual 3-way switch wiring. :confused: