1. I wired it identically as the old one.
2. I put the first light on that was fine. Then I put the second one on simulanteously and that was when it blew. Then the first one would still work but not the second light.
3. As for the earth. I wired the earth to the new switch (as it is...
I have tried to replace an existing double switch with a double dimmer. The instructions enclosed are useless and only relate to single switches. Anyway by replicating the original wiring I got both lights to work for a moment and then bang and the fuse was tripped.
The original wiring was...