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. 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.