The one job that even the best mechanics avoid is wiring. Those worries are now over with help from the revised edition of "Advanced Custom Motorcycle Wiring." This book uses Chapter One to cover the basics of DC electricity and Chapter Two to explain batteries, starters, and alternators. It goes on to cover the schematics and factory harnesses for both early and late-model Harley-Davidsons.

Jeff Zielinski, owner of NAMZ Custom Cycle Products and wiring harness and component designer, is the author of this revised Motorcycle Wiring book. In addition to a discussion of factory...