red went to L1 yellow to L2 and black to common on one side of old switch
opposite side
red went to L1 blue to L2 on old switch no common
The new switch seems to have these side by side instead of upside down (compared to each other) on old switch
Just decided to fit a new brass 2 switch light switch like for like with very old plastic one
Swapped cables like for like but only one light now comes on
Cable feeding has 3 cores
black red earth
other cable coming in has 4
red
yellow
blue
earth
I stress i have put them into same...