Amazingly detailed write up. I would love to know the reference material used to figure out the pinout's of the control units. One of the things I miss from old

Amazingly detailed write up. I would love to know the reference material used to figure out the pinout's of the control units. One of the things I miss from older cars is how hackable they were. It feels like new cars are just a bunch of black boxes strapped together with no labels on them, so reading someone able to actually mod one is super impressive.