Hi I'm replacing a light switches in my hall and landing from plastic to chrome. The wiring of the old switches is very different to the new ones. I have the following wires 1 red, 1 black, 2 blue and 2 white. The whites went in the L2 upper and lower, the blues went in the L1 upper and lower. For the new switches the diagram shows that yellow or grey goes to the upper L1 (I don't have this colour), 2 blue or black go in lower L3 (I have one black and 2 blue) and 2 red into L2 (I only have one). Can anyone advise what should go where please. Many thanks.