Isn't electrical stuff fun!?
It's the best!
I've definitely gained an appreciation for those with deep knowledge of the systems on these trucks and on Mustangs. The wiring diagrams and books are good for getting a high level understanding but getting a simple explanation such as "the main black wire with the yellow stripe that starts at the hot side of the starter solenoid and runs into the main connector at the firewall provides power from the battery to the fuse box, ignition and..." is easier to understand than the digrams and pages in the factory manuals.
I'm not a guru but try to help others in areas I'm able to. Back when I worked on Mustangs all the time I used to be able to identify all the nuts, bolts screws etc on a Mustang w/o needing to label them cause I was just that familiar with their sizing, use etc. Not so much these days, but I spend way less time on that now since both my hobby vehicles are mostly restored to the point that I want them to be.