Today's Technician Medium/Heavy Duty Truck Electricity and Electronics is a two-set manual written to enhance the in-service technician's understanding of the various electrical and electronic systems at work in today's medium and heavy duty trucks. The clasroom manual covers theory and component descriptions, while the shop manual will give the user real-world, practical application procedures and guidance in a shop setting. Both are designed to strengthen the skills and increase the productivity of the user. This comprehensive set, covers the fundamentals of electricity and then relates it to all facets of truck electrical systems including; batteries, starting systems, charging systems, lighting systems, electrical accessories, instrumentation, ignition, and engine and vehicle computers.