Hello I'm new to this forum and would appreciate any help or advice on the following :-
I have recently attempted to change a double light switch that operates 2 sets of lights in the living room independently - until i started to replace it !.
1 switch operates the 2 wall lights and the other switch operates the ceiling light.
On removing the old switch I was horrified to find that the new light switch had totally different parts to the one i was replacing. In the switch casing there are 4 red wires that come out of 4 different white cables that went into the old plug and a common earth wire, i have managed to put the right wires (4 red and 1 earth) in the right holes i think? after many tries and both lights now work as they should except that one light comes on when the switch is in the off position - to get to this stage has taken hours - however when screwing switch to wall using metal ? screws the lights do not work again as they should .
Does the metal screw form part of a circuit when contacting switch and bit you screw it to.The switch is earthed
Any help / advice much appreciated