[vstech]

The installation manual explains a lot.
Weather or not you are planning diy, this forum does not instruct train, or explain wiring, function or funding for anyone to see, search for, or use, because we cannot know the qualifications of understanding anyone would have.

The professionals that are vetted to their knowledge have access to training, that is all we can do.

Every unit i have ever worked on have wiring diagrams on the panels...