Thanks for that, Ian.
Yes; I like your style - "block diagrams" and voltage levels (very important). Plus "location of components" (saves embarrassment later).
My only other comment would be about waveforms (frequency etc.); maybe you should expect to see those (a simple sketch) in the "boxes" as well.
Lastly, do your students get to do any fault finding?
Not sure about carbs, though; it's all fuel injection and electronics (mapping) now.
