Yes, if you are following AYP, but there seem to be a lot of people who come here with kundalini problems from over-doing other systems. If I were one of those people, I would be interested in how things go wrong under the hood, caused by mistakes in how the controls are used.
Maybe that's just me though; at work I often have to fix machinery with no electrical diagram, so when I DO get to see a diagram it's like gold to me.
Although the diagram is not necessary to operate the machine, it is quite useful to fix it, or at least understand what went wrong.