Congratulations on getting it running again.
Broken wires going to the capacitor and LC filter mounted on the coil bracket could be the cause of the tach not working.

As for the crank bolt I hope that impact you used was weak or something. If not,
I wouldn't try to remove that crank bolt again without being prepared to change the crank if it breaks. Resting a breaker bar on the frame and bumping the starter would be a good way to try to remove it next time

1990 LWB RS A/T
1990 LWB Base A/T
1991 LWB LS A/T Going...Going...