Prerequisites: JDAT1140 and JDAT1142. Basic electrical principles and applications of magnetism, electromagnetism, and the safe utilization of electrical test meters are covered. This class covers the operation and diagnosing of basic components found in John Deere Electrical Systems. The design, construction, and safe operation and testing of lead acid batteries is part of this class. Principles of operation, testing, and repair of ignition systems, cranking systems, and charging systems are included.