Car dying when the lights are turned on?

I had this happen on my Barracuda years ago. Under the dash is the main thick red ignition wire that goes to the wiring bulkhead on firewall. It's in the center of all those and got hot and fused wires together. Check their for heated up wires. (Melted harmed tape,exposed wires that got heated and came through harness tape. Also look underhood where wireing bulkhead is and fuseable link is and look for wires showing heat damage. This is where I would look. Mine would die instantly when I would pull head light switch. Good luck and let us know what you find.