My 1973 240Z is dead. It was Thanksgiving and I was on the freeway driving to work and it started to die. Then it backfired for the first time and kept going. About 15-20 seconds later it died again. No power, nothing. When I pulled over I noticed my amp/fuel gauge was smoking. After I had it towed I pulled the gauge out. It was blown. The lead wire coming off of the starter that goes through the firewall is fried as well. I replaced the wire and bypassed the amp gauge to see if I could get the car to start. Nope, just more fried wires. I didn't notice any bad connections to the alternator. What could be causing this? I'm this close to tearing everything out and redoing the wiring. I just don't want to redo the wiring and have this happen again right after. Any thoughts?