Let me start by saying this book is a game-changer if you've ever stared at a tangled mess of car wires feeling utterly lost. I’ve been tinkering with cars for years but always avoided electrical work like the plague—until this book landed on my workbench.

The Good: Tony Candela’s writing is like having a patient mentor beside you. The diagrams? Crystal clear. I finally understood why my aftermarket fan kept blowing fuses (turns out, 14-gauge wire wasn’t cutting it for the current draw). The project-based approach—covering gauges, fans, and more—gave me confidence to tackle real-world jobs instead of just theory.

The Not-So-Good: If you’re looking for "connect wire A to slot B" hand-holding, this might frustrate you initially. It dives into calculations and concepts (Ohm’s Law, voltage drop), which felt overwhelming until I realized—aha!—this is why my past hack jobs failed. Pro tip: Pair it with Volume 1 for fundamentals.

Real Talk: I wired up a vintage Mustang’s auxiliary lighting using this guide. Measuring twice, crimping once (thanks to Tony’s obsession with proper technique), and voilà—no fiery disasters! That said, if you’re allergic to multimeters, be prepared to embrace them.

Verdict: Worth every penny for DIYers ready to level up. Not magic—you’ll still curse at stubborn connectors—but suddenly, wiring diagrams stop looking like alien hieroglyphics.