Auto Electronics

Hi fellow enthusiasts. Guys and girls, do you know were I would could find tutorials on the net relating to Auto Electronics. :smile:
Thank you.

Are you talking wiring harnesses and ECUs (car's computer), stereos and speakers, fuel and spark circuits...electronics is pretty vague. Also what kind of tutorials are you looking for? Car specific? General explanations of the systems? I know some great sites for my car specifically, but that probably wont really help much, unless you drive the same thing.

Basically car electronics as a whole, wiring diagram examples, etc.