Okay, so I've been tinkering with cars since forever, but electrical stuff? That was always my kryptonite. This Haynes TECHBOOK changed the game for me.
First off - the diagnosis steps are GOLD. I used to waste weekends chasing gremlins in my wiring. Now I can actually find issues like a pro (well, almost). The color diagrams could be better though - some look like they were photocopied in 1985.
What surprised me most? The safety warnings. Like who knew automotive wiring could be so... explosive? The book doesn't just teach you how to do stuff - it teaches you how not to blow yourself up doing it.
Would I recommend it? Absolutely! But fair warning - if you're expecting pretty pictures and hand-holding, this ain't that. It's a proper manual that makes you think (and occasionally swear).
PS - Mine arrived looking like it survived a warzone, but the knowledge inside is what counts right?