Ok, i have some kickas$ led's and their wired in my car now, in the positions i want. The thing is.. is that id like to make them sound reactive... what and where can i get what i need to do this?

 

Something like this might be the easiest route:

http://www.skycraftsurplus.com/index...ROD&ProdID=431

You could just soldier to the leads on that board and then wire them up in parallel. If you actually wanted to wire them to the speaker wire it could be complex.. or really simple I'm not sure. I would guess complex though