@bracconiere In you particular situation see the attached photo. It may or may not apply to any other dryer you find. That's where a wiring diagram is important. You can tell from the actual wiring (following the paths) if you know what to look for also.
View attachment 748514
As far as lessons, I was referencing to centrifugal motor switches and the like. I'm not scolding you for tearing ass in to your dryer, I'm not that way.
Referring back to my dad, he believed that it was more important to understand
how and why things work. Only then, can you find the problem
when they are not.
Cheers,
Joel B.