well do you have factory radio ? if you do then you can order one of those wiring kit so you can plug it into the factory wire harness for easy installation.. but about which wire is which.. i really don't have a clue and i don't have any wiring diagram... even the stupid chilton didn't say anything about it... here is where you can get those kits.. this is where i got mine from as well... or you can try ebay.. but i wasn't sure if the 1s that are selling from ebay is gonna work... here is the link to get it from ebay
http://cgi.ebay.com/ebaymot....1618305
http://www.sfxaudio.com