This article discusses the safety precautions and procedures to follow while working on vehicle systems in an automotive workshop. It covers safety measures for exhaust, ignition, fuel, and LPG fuel systems, as well as high voltage hybrid vehicular systems. The article also explains the reporting procedures for faulty equipment, illness, incidents, and accidents. Additionally, it provides information on tools for repairing vehicle electrical circuits and electrical testing procedures for circuit electrical resistance, open circuit test, short circuit test, and current flow test.