We have a long hallway, with light switches on both ends. When we first moved into this house, you could turn on the light on one end, and turn it off at the other end. The switches eventually wore out, and my husband replaced them. Now you have to turn on the light and turn it off at the same end. This is very inconvenient, but my husband doesn't know how he messed them up. Do you have any idea how to fix the switches, to turn the light off and on at either end again?
