My hubby is trying to install my head unit into a 1997 Hyundai Tiburon I just got. The problem is that the original factory wiring harness was cut off. When he put in my head unit, it powered up, but it immediately shut back down. We're having a hard time finding the correct color codes for the wires. We went to Circuit City, but the key they gave us wasn't correct. He figured out which wires were the accessory wires with a circuit tester. However, the constant power is nowhere to be found. Is it possible a fuse is busted, and if so, can anyone direct him to a fuse box key?