This application automotive electrical circuits and wiring introduction charging circuit battery construction battery case, coyer, and caps. battery capacity battery charging placing new batteries in service battery maintenance cleaning the battery and terminals. including: starting & charging system -battery, ignition switch, starter motor generator & pnp switch circuit2. engine control module, battery power supply, ground, injector & heated o2 sensor circuit. power window circuit - only front power window circuit - front & rear power window circuit21. central door locking system circuit22. cluster - temperature gauge, tachometer, fuel gauge, oddometer, speedometer & fuel warning lamp circuit - warning (mil, abs, tcs, parking brake & charging) lamp circuit - warning (ssps, air bag, oil pressure & seat belt) lamp & hold mode circuit - indicator lamp . generators regulation of generator output generator maintenance generator repair armature test. alternator output control alternator testing charging system test circuit resistance test starting circuit pinion drive assembly field frame automotive electrical circuits and wiring 2/ 101 neutral safety switch starting motor circuit tests ignition circuit ignition coil ignition distributor spark plug spark