If you'd love to know how to simply and effectively modify the electronic systems in your car, this book is for you. In Section 1 you'll find a step-by-step introduction to the world of car electronics. The section starts with very simple circuits but as the pages progress, you'll be introduced to volts, ohms and amps, be shown how to use a multimeter, meet analog and digital signals - and a whole lot more. And at each of these stages, there are real-world car modifications used as examples. Section 2 covers specific modifications to cars. These are wide-ranging - everything from fitting and tuning a commercial engine management signal interceptor, to adding new cabin lights, to cheaply wiring a tow-bar on a CAN bus car, to modifying electric power steering and electronic stability control. Even, the electronic modification of regen braking on a Toyota Prius Along the way you'll find a host of interesting snippets covering things as diverse as stopping turbo boost cuts, a prebuilt module that will improve your fuel economy, upgrading to LED interior lighting, what's inside poor quality relays - and lots more. The modifications that are down-to-earth, practical, cheap and achievable - this a book that should be on every car modifier's shelf.