Recently my double dimmer switch half blew, meaning only one half of the lights in my living room worked, so i went to the same place and bought an identical double dimmer switch, only when i opened the package the backs were different, not to be deterred i took the old switch off and attempted to replace it with the new switch, but i can't get the new one to work at all. I have 2 red and 2 black wires and 1 yellow and green wire...i know where the yellow and green wire goes...but where do the red and black wires go? L1? L2? or C? and which goes where?

Kelly, April 2009