For RVers who remain mystified by their RV's electrical systems - 120-volt alternating current (AC) and 12-volt direct current (DC) - this book is a godsend. It provides a better understanding of what electricity is and what it does. This problem-solving reference answers questions such as: why do interior lights dim or burn out rapidly? and, why won't the batteries recharge after a night without electricity?It tells you: how to repair and improve electrical systems; how to troubleshoot faulty brakes, taillights, and house circuits; how to detect dangerous shorts, faulty grounds, inadequate connections, malfunctioning switches, dead battery cells, or current leakage; and much more. This book could save your vacation, or even your life. All you need to know about RV electricity, including: how to safely use a campground hookup; how to increase battery charging efficiency; how to take the pulse of your AC and DC electrical systems; how to recognize and correct dangerous wiring practices; how to troubleshoot electrical problems of all types; how to upgrade your RV from fuses to circuit breakers; how to calculate your electrical needs and upgrade your system to meet them; how to select the most effective components - batteries, alternator, regulator, coverter, charger, generator, solar panels; and how to recognize phantom electrical loads that can drain your batteries.