Wiring for new two way switch

[Gary Willoughby]

Can anyone help, I'm trying to replace a two way switch, but can't get both lights to work, i am a novice with electrics, however don't normally have problems replacing switches. The new switch is totally different to the old one and the colour of the wires is unusual.
Switch 1 - single switch (Two way) L1- red, L2 - yellow, L3 - blue
Switch 2 - Double switch, 1 two way, 1 single
wire 1 - red - incoming live, black Common, yellow/green earth.
wire 2 - red ?, black common, yellow/green earth
wire 3 - red?, yellow ?, blue?
can anyone tell me the correct wiring for the double two way switch

 

[westward10]

No worries Gary best we safe.

 

[buzzlightyear]

The block connector is just an extension of the red wire, the 2 black wires terminate in a block connector inside the socket housing and are not connected to the switch, this is how it was wired originally, I will try to locate an electrician, thank you for you time

mam ma ,now it just dawn on him!

 

[buzzlightyear]

The block connector is just an extension of the red wire, the 2 black wires terminate in a block connector inside the socket housing and are not connected to the switch, this is how it was wired originally, I will try to locate an electrician, thank you for you time

mam ma ,now it just dawn on him!

 

[KEV 1 N]

This is the single switch back box

View attachment 40816

That metal switch doesn’t appear to have an earthing cable connected to it! Tut tut!

 

[buzzlightyear]

That metal switch doesn’t appear to have an earthing cable connected to it! Tut tut!

you mean a earth strap to the back box.