Hello, hope someone can help us. We've just moved into a house where there are two separate lights in the front room, controlled by a normal double switch. However, there are only 4 wires for both lights, ie switch 1: yellow goes to ~ and blue to L1. Switch 2: red folded over and going into both ~ and L1. This works with the double switch but when we try to use the same setup on a dual dimmer switch, nothing happens. Has anyone got any ideas? Sorry if this has already been posted by someone else. Cheers