Agamemnon
how many different colors you have?
usually red is positive and black is negative.
are you doing your own wiring? because normally the wires are all connected to like a little white plastic connector!!
You will need to refer to the case manual to see which of the cables connects to where, but I think you are referring to the leads for the power/reset/HDD activity indicator etc.
Should look like this
on your mobo. (Sorry about the pic quality, best I had).