Well I know smoking electronics is never good
but are ignition switches known to just burn out or is there almost always a underline problem. I looked over all the wires under the dash and they looked fine no burned, cut or pinched wires minimal dirt around the adapters and they weren't loose. Looked over the wiring harness from the fuse box up and no cuts or shorts the protecting cover is still in good shape no cuts or pinching or obvious signs or faults, the battery cables look fine hooked up correctly. That's about all I looked at or could think of at the moment.