I am rehabbing a house. Upstairs there are two three way switches about 15
feet apart that control two light fixtures. I have identified the two
travelers. I have identified the hot wire (wire supplying 120VAC) and I have
identified the wire going to the lights. So far, so good.
I have the travelers wired the same on both switches (one traveler, red, to
the upper-most switch terminal and the white traveler to the middle
terminal). I have the hot wire (supplying 120) to the common terminal of one
switch, and the line to the lights connected to the other common termnal.
But here is what happens...
If I am at one switch, I can turn it on, off, on, off, no problem,
everything works fine. But if I now go to the other switch, nothing. If I am
back at switch one and just turn it on, I can go to the other switch and
turn it off and then that switch is the controlling switch. It is like
either switch can turn the lights off if they are on and then the switch
that turned them off is the only one that can turn them on again.