I have bought some dimmer switches to replace my existing switches in my hall. They are the kind that don't have an actual switch, but are touch buttons with an LED light on. In the instructions it states that 'existing switches must be replaced with momentary action retractive press switches - contact us for details of our range'...I currently have - a double switch, which controls the hall lights and the outside light, a single switch that also controls the hall lights and another single switch at the bottom of the stairs that controls the light on the upstairs landing. The dimmers I have bought are all 2 way. Tried to wire them in at the weekend, but there was one too many wires (4) for the amount of terminals on the dimmer (3). Which ones should go to which terminal? also, what do they mean by replacing all switches with momentary action retractive press switches? Would be very grateful of any help, even my electrician was lost! Many thanks!