"I love it when a plan comes together!" Usually, electrical problems can be solved by breaking things down into individual circuits. It really gets overwhelming when someone tries to look at the entire circuit at once. In the 50+ years I've been fixing electrical problems and teaching the subject, I've found that it takes a special talent for someone to visualize what's going on in a wire. Since it's not possible to watch the electrons flowing, it takes a pretty good ability for abstract thinking. Some folks have a lot more trouble than others doing that!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!