Ok, this is like childs play to you experts, but I am so wet behind the ears I might electrocute myself.
Here is the deal.
I have a small DC fan, the ones you would find inside a computer. It has three wires coming out of it, a RED a BLACK and a YELLOW. I want to hook this fan up to a small battery. Question is, which wire goes to the NEGATIVE and which to the POSITIVE? Any help would be appreciated, and again I am sorry for this totally easy lame question to all you experts.