just to clear it up....you can use the vehicle harness , but oyu would have to cut it and reconnect it to the apline harness. If it was a pioneer deck your switching to, it might be possible.
you'd still have to replace the RADIO WIRING HARNESS but you can keep the VEHICLE WIRING HARNESS. just take the RADIO WIRING HARNESS and connect it to one side of the VEHICLE WIRING HARNESS and you're set. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif
If it was put in at a circuit city, it might be a smart harness. If it is then it would be plug and play //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
But more than likely you'll just use the vehicle harness and solder the radio one to it.
Yeah, cut the car harness and connect each wire of the radio harness where the car harness used to be... just make sure to save the original car harness, you may need it when shelling the car and installing the old radio