Stop in for a cup of coffee

As far as the electrical lesson goes,dont know why but i never took one glance at any of the diagrams posted. I should, as i will be doing electrical in both my cars. But reading the explanations are getting through.
I wrenched professionaly for years. Fixed and repaired countless electrical issues yet never truly understood the systems. It’s cool to finally start understanding it as I am starting from scratch on this one. And a shout out to @Mattax for all the great advice, clarification and diagrams! Much appreciated!