How to replace a double 3-way light switch (Ed.)

[pleasehelp44]

Hi I'm trying to replace a double light switch but with out success.

 

[jurassic sparkk]

RED L3 TO L22
BLUE L2 TO L21
YELLOW L1 TO COM2
RED L1 TO COM1
RED L2 TO L11

while your at it run a cpc to the switch.

 

[pleasehelp44]

That's great thanks, what is a CPC.?

 

[ericmark]

The black line shows divide between both switches, the pair of reds to left and the red, yellow, blue to right.

Circuit protective conductor (cpc). A protective conductor connecting exposed-conductive-parts of equipment to
the main earthing terminal.

 

[mattylad]

cpc means the earth wire.

 

[pleasehelp44]

All good thanks a lot.