Replacing old 1970s two gang double light switch with new one, back to old wiring red and black, also has another switch which isolates both,

[rhares]

 

[westward10]

Connect the same as the others and ignore the loop.

 

[littlespark]

As westward says, but pay attention to the terminal markings.

Your old switch has Common, L1 and L2 in a triangle, with Common at the pointy end.

Your new switch ( ignoring loop, as it has no internal connections to the switch) Com is Common… same function. 1 way and 2 way are the L1 and L2… but you can see they’re in different positions. Just keep Common to Com, L1 to 1 way and L2 to 2 way.

Also you’ll notice both switches are orientated the same way up on the faceplate as separate entities… whereas your old switch was 2 switches built into one casing.

 

[rhares]

Connect the same as the others and ignore the loop.

Thanks all sorted and very much appreciated

 

[rhares]

As westward says, but pay attention to the terminal markings.

Your old switch has Common, L1 and L2 in a triangle, with Common at the pointy end.

Your new switch ( ignoring loop, as it has no internal connections to the switch) Com is Common… same function. 1 way and 2 way are the L1 and L2… but you can see they’re in different positions. Just keep Common to Com, L1 to 1 way and L2 to 2 way.

Also you’ll notice both switches are orientated the same way up on the faceplate as separate entities… whereas your old switch was 2 switches built into one casing.

Thanks all sorted and very much appreciated

 

[littlespark]

I just noticed the new switch has an earth terminal. Did you sleeve the bare earth wires and connect them to the plate?

 

[brianmoooore]

There's one or two 'odd' things about this set up, that could do with further clarification.
What's with all the connectors at the top of the second pic?
In the third pic, the cables seem to be emerging from a recess chopped into blockwork. Where's the back box? Is it earthed?
Has the switch in the first pic been replaced by a metal faced one as well? If so, is its back box earthed with a flylead to the switch plate?
Rather a lot of exposed copper in the original switch pics. Has that been addressed with the replacements?
Minor point, but I don't like the idea of a live wire being identified with green/yellow tape.