Grateful for any assistance...
Once upon a time there was a single wall switch for a ceiling light. Then we got six spots put in and two wall lights running off a 400 Watt double dimmer. The dimmer keeps getting overloaded (the reason for which I now, finally, understand) but on removing the double dimmer from the wall one of the wires got pulled out and I have no idea where to put it back.
Remaining wires show:
Black wire into L1 of dimmer 1
Green & yellow wire from C on dimmer 1 to C on dimmer 2.
Red wire into C on dimmer 2.
The spare wire is green yellow - although I think this is just the sheath for the wire & may not indicate earth. A neighbour has has previously said that this set up is not ideal but is workable.
Grateful for advice on where to replace the final wire.