Not a complete idiot or even a partial one.
I’ve been a mechanic for 40+ years and in my experience, intermittent electrical issues can be some of the most difficult problems to diagnosis and repair. My heart used to sink when I had a “no start” work order and the vehicle started on the first try when I went out to the car.
Don’t be too hard on yourself. You were successful in the end and I’ll bet money ahead.
I appreciate that. Definitely learned from it.