A few months back I replaced the original 3-way switches (one in the house, the other in the garage) for our patio floodlights by 3-way switches with pilot lights:
Now the switch in the house has become an "illuminated switch" rather than a "switch with pilot light." IOW, now instead of the light being off when the outside lights are off and on when the outside lights are on, it is on (and much brighter than before) when the outside lights are off and off when the outside lights are on.
The one in the garage still behaves as it did before (i.e., on dimly when the outside lights are on, off when the outside lights are off) if the switch in the house is in one position, but when the switch in the house is in the other position, the light in the switch in the garage remains off no matter what position the switch in the garage is in -- even though it still switches the outside lights on and off.
I cannot even figure out how the switches could be constructed that would cause either of them to behave this way.
Perce