how do i wire an outside light into a two gang switch

[deano86]

an outside light is being installed,the supply is being tapped off an existing light switch which already houses a light,how do i wire the the two gang switch and what cable is used.

[Tweed]

Use 1mm or 1.5mm squared single red and earth from the switch to the light. In the existing one-way switch there's a feed and switch wire. Connect the feed, and a short piece of cable to one of the com terminals, and the other end of the short piece to the other com. Then connect the switch wires to L1 and L1. Wire a single black from the outside light to any light on the same circuit. This is only one way to do it, but the most common and easiest.

[mac309]

you probably won't be able to, as there most likely not going to be a neutral at the switch.  

[jockclucas]

Thanks Tweed, done everything you said,and you were spot on,my outside light is working perfect, thanks again.