Automotive repair technicians use a variety of diagrams during car repair to compare a specific vehicle's configuration to the recommended manufacturer configuration. Electrical diagrams are commonly used to ensure that all internal wiring and electrical systems are configured properly. Improper wiring can lead to long-term damage or safety issues.
Automotive diagrams differ based on a car's make and model. Most cars' user and repair manuals contain detailed diagrams designed directly by the manufacturer for all relevant systems. The electrical systems of a car often have the most diagrams associated with them, as electrical systems typically consist of numerous wiring systems that must be configured in a single fashion. Improper wiring can lead to anything from shorts in the system that compromise car functions to fires that can harm both the car's occupants or anyone in the surrounding area.
Most automotive diagrams consist of a standard set of symbols that represent the various components involved. For example, an electrical diagram often contains symbols for the different fuses used in the system, the types of wiring involved and the ways in which each wire connects the various mechanisms in the system. Other automotive diagrams can include information for ventilation systems, engine parts or auxiliary systems such as windshield wipers.