Why do you need to find out which one is which?
If you put one in COM and the other in L1 your light should work.
Remember if you want to use a metal light switch you should run a flylead from the backbox to the switch plate.
Adam
September 2009
All ? how many wires do you have? How many switches? How many lamps? One way switching or two way?
A light switch has Live going into it and, when the switch is set to ON, it has live coming out of it...
You may do best to call in an electrician.
Take care...
Peccavi
September 2009
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