I just noticed another thing, existing wires are as follows:
- one red plugged onto the label 'IN' of the switch.
- another red (with a black tape sticked on) and a yellow plugged
together onto the label 'OUT' of the switch.
- a blue and a black joined together.
- plus a earth to...
I am trying to replace my one control switch in the hallway with a two controls, so that the light outside operates independently from the one in the hallway.
The switch currently fitted has wires as follows:
- one red plugged onto the label 'IN' of the switch.
- another red and a yellow...