Thanks, does the earth need to go into any of these 3 parts? It is already connected to the screw in the back box but there is still an end with nowhere to go.
I have just figured out what you meant by this but I'm afraid I can't really follow it. Is anyone able to tell me what wire goes where? As this is now a plastic switch, do I need to do anthing with the earth?
I have just removed a brass dimmer switch and I am trying to replace it with a plastic one. The new switch has 3 parts labelled L1, L2 and ~. i have 3 wires (1 red, 1 black and an earth). Does anyone have any idea what wire goes where?