Hello
I have a ceiling light with 2 separate on -off wall switches. (called a
2 or 3 way system). Switches worked fine but I decided to purchase a dimmer switch for it. I purchased the correct dimmer (it was for a 2/3 way circuit). The on-off switch I removed had a ground, two red wires and a black wire - same as on the replacement dimmer unit. I connected up the matching wires. Now the un altered on-off switch must be "on" for the dimmer unit to work. I suspected crossed wires so I switched the two red wires on the dimmer unit with the two red wires in the outlet. No difference. What is going on?paul