Hi, I have a double switch by my front door. Currently the switch on the right is working the main light in the lounge (this is also on a 2 way with a switch ont he other side of the room) the other switch is not wired up at all (i think originally it was connect to an outside light but all wires ahve been removed). I want to use this switch to run an ourside porch light independently - how should i wire this up? The switch has 'com' L1 & L2 in a triangle shape behind both individual siwtches.

Thanks all,
Rob

Rob H, October 2009

You will need to take a live and neutral from another light on the same circuit (your lounge light by the sound of it) to the new light in the porch.
Obviously this will mean the light would be on all the time, so you need to take a 2 core and earth from the light (brown wire) to the switch and back again (blue wire with a brown band or bit of tape to indicate it can become live).

Adam, October 2009