I have a light (upstairs) on 2 3-way switches and an unswitched light (downstairs). The home is very old (plaster walls) and I cannot tear- in. I would like to add the unswitched lamp to the switched circuit. I managed to run a line to the switchbox (and remove the original line in) but it doesn't work. here is the configuration currently:
Power in -> upstairs light -> Master Switch -> Slave Switch ->
downstairs light
Is there a way to make this configuration work?
Thanks!