I think circuit city is pulling your chain (wire?). There is a wiring adapter that is designed to connect to the OEM stereo harness. You just take that adapter and match the color coded wires to the wires coming off of the head unit. I used crimping connectors and a crimping tool. Then just plug the adapter to the harness and your off to the races. It was really easy and I think I got the adapter at Wal-Mart