For RVers who remain mystified by their RV's electrical systems, 120V alternating current (AC) and 12V direct current (DC)– this book is a godsend. Problem-solving reference book answers questions like, "Why do interior lights dim or burn out rapidly?" and, "Why won't batteries recharge after a night without electricity?" Includes tips on troubleshooting, repairing and improving electrical systems. 288 pages. 100 illustrations.