This course will teach participants the relationship between voltage, amperage, and resistance; the function and operation of charging systems; and to perform basic battery testing, troubleshooting and maintenance.  Instruction will include the construction, testing, and troubleshooting of basic electrical systems and testing and diagnosing of charging systems used in a variety of diesel and gasoline powered vehicles.  Hands on exercises include:  determining the relationships between voltage, current, and resistance and diagnosing circuit conditions by interpreting voltage and voltage drop measurements.