yo get a new reverse wire harness, I used to work in the Tech Bay at best buy. They sell a REVERSE wire harness for any vehicle. Metra and scoshe < i think thats how u spell it> makes them. as for finding what wire is what just match them up with the reverse harness. Or u dont even have to. u can match up every wire with the wire harness you purchased, if u simply just plug in the wire harness u cut to the wire harness u bought, then your golden