Wow, Kiwi_Roy, clearly and succinctly stated. Inroads into my puny brain, so thank you for schooling me. Much easier to conceptualize.
I had a print/copy of the wiring diagram, it was fuzzy, written in Italian in 4pt type, printed in black and white and I believe topped with marinara sauce for good measure; Tolstoy translated into Swahili for my befuddlement, in other words.
Thx.