Hello, all. The wife wanted illuminated switches placed at the top and bottom of our stairway - the circuit being one of those where you can turn the same bulb on or off with either switch (top or bottom of the stairs). I bought 2 switches, swapped out the 3 wires to their respective positions and connected the grounds - but only the top switch would work properly, and only then if the bottom switch was in one position and not the other. Figuring there might be some kind of loop with 2 to-ground connections in the same circuit I replaced the lighted bottom switch with the old unlighted switch - but that didn't help. Is it not possible to add a illuminated switch to a 2-switch system?