By chance did your electric starter short out on you?
I'd disconnect the starter 12V line from the solenoid and verify you can trigger solenoid OK.
That smoked wire needs to be removed and replaced.
Theres also a fuse out by the battery to be checked also. with the key on the lights should work if not check this fuse.
Starter is drawing too much current and the weak link was your ground line that enters intot eh stator area. Repalce it. But, first correct the short.
