ok I'll admit. I am an idiot when it comes to things like this(electronics). I picked up this light and switch at Radio Shack. Can someone tell me if this looks to be ok? And how do I connect this to a power supply? Can any battery work or does it have to be specific. I just kinda need some direction on how to get the light to work with the switch. Is one of those 3 things on the swicth for "ground"? Thanks guys!