how do u add lights on and off...i know it has to do with switch but how does it works? thanks

Lol, all they do for that, is they disable your vision to yourself, that's all it is.

It is an AI script accessible in scmdraft. (And SCXE and starforge.) To turn the lights off you would have something like:
This would be for player 1.
Conditions:
Current Player brings 1 (unit) to location 'LIGHTS OFF'
Actions:
Execute AI script: 'Turn OFF Shared Vision for Player 1'
Preserve Trigger

To turn it back on, you would do almost the same thing, except, of course, it would be turn on shared vision with yourself.

aite thanks got it...