4 Auto Electricity and Electronics Copyright by Goodheart-Willcox Co., Inc. Auto Electricity and Electronics stresses the use of on-board diagnostics, as well as conventional meter tests, to fi nd electrical/electronic problems in all major automo- tive systems. Information on OBD II diagnostic systems has been strategically placed throughout the text. Additionally, electrical and electronic terminology has been updated to conform to the latest SAE standards (J1930). Th is text is designed to help you pass the ASE Test A6, Electrical/Electronic Systems. However, it will also help you pass other ASE tests since they also contain questions requiring knowledge of electricity and electronics. Auto Electricity and Electronics is a valuable “tool” for anyone wanting to know more about modern automo- biles. It will help the experienced technician learn about new technology, review principles, and prepare for ASE certifi ca- tion. It will guide the student through a sequential program of study to prepare for employment. It will also help the car owner who just wants to know more about what is going on inside all those “wires and black boxes.” James E. Duff y