How to wire a dimmer switch

[MalcMJM]

I need to replace my old double dimmer switch with a new one, however, the wiring of the old switch is different to the new one, can anyone give some adviceplease

 

[endecotp]

There are currently two red wires going to L1 terminals, and a link wire joining them together. You don't need the link wire any more; put both of those red wires in the new switch's central L terminal.

Put the yellow wire that's currently connected to a terminal with a ~ symbol in one of the new switch's ~1 terminals.

Put the red wire that's currently connected to a terminal with a ~ symbol in the new switch's other ~1 terminal.

BEFORE YOU START, make sure you can identify which red wire is which!

Don't touch the blue and black wires in the terminal block.

Can I see an earth terminal of the left hand side of the new switch? It's not very clear.

 

[MalcMJM]

Yes there is an earth wire, I take it that I just connect that as normal, thanks for all you help

 

[Echo the husky]

Interesting, I've never seen a double switch with a shared common before, convenient at times, but limits your wiring options somewhat!