ignition starting problem

Yeah it takes awhile to get the hang of reading those old schematics. Even though there's less stuff than a new car has they can be a chore.

Yes I did mean the part the key slides into. If your voltage dropped to .3 volt when cranking that's probably your problem. I don't know positively since I've never had to work on my key switch section but I believe it may just have a big slide on multi terminal connector so changing it is a snap.

It should have at least 11 volts on the coil positive terminal during cranking. It would have full battery voltage but the starter draws alot so that pulls it down some.

The positive side of the coil is the main thing you need to check anyway. The negative side only goes low when the pickup sends a signal to to make it fire so concentrate on getting B+ to the pos. side when cranking.

Good luck.