lighting circuit

[macloon]

Hey all, Quick question for you. I have an outside light which is on a 3 gang switch in the hall. I want to add a security light to outside but want to be able to control this seperatly just want to know if there is anyway of doing this using the set up as it is

 

[telectrix]

first, see if you have a neutral at the switch. these will be jointed, usually in a choc block and not connected to the actual switch