The Haynes Manual on Electrical and Electronic Systems (Haynes 4251).
The Haynes Practical Electrical Manual
The definitive DIY manual on car electrics, with an absolute minimum of theory and the maximum of diagnostic and repair information. Includes how to read wiring diagrams, how to use test equipment, fault finding, engine starting and charging systems, alternator and starter overhaul, lighting systems, auxiliary gauges and towbar wiring.
Book No: Haynes 4251