I dont bother with all the wiring stuff. My little bro does this for a living, i see your from Iowa. how close to Sioux Falls S.D. If nothing else you can give Audio Playground a call, talk to Justin. Tell him big bro sent ya. He did my complete system, two 10s, five channel amp in back, rockford in the doors and pillers, with complete OEM integration, everything looks stock, but it rocks, been in a couple shows, to display what he can do.
MIKA, I believe a stereo shop can wire in an ipod cord for ya, all i know about it was i had two little green boxes inside my dash when he was done. sorry i'm not much help with what exactly to buy.