I've taken a 3-core from a ring outlet through a wall into cupboard and connected to a switched spur which will be fitted with a 3 amp fuse. From the spur cable has been run to a 1way architrave switch, where I have L1, L2 and COM terminals. The batten light is installed with cable running back to switch. Earth is connected at all points including switch pattress so I now have red and blue from both spur and light. Which wires go where into the switch terminals?