The switch controlling the light also controls the upstairs hall light (which is also controlled by another switch upstairs). I have tried many different permutations of wiring but I cannot get this to work.
I have uploaded a picture of the wiring.
If I swap the black wire second from left with the black wire third from right the light is still permanently on.
If I swap the black wire second from left with the black wire second from right the circuit trips before I even turn the switch on.
Clearly there is a way to wire it which will work as it did before but it is beyond me.
Any advice is much appreciated!
