A wiring diagram is a visual representation of an electrical circuit. It shows the connections and layout of various components, such as wires, switches, and devices, using standardized symbols. This type of diagram helps electricians and engineers understand how to connect different parts of a system, ensuring proper functionality and safety. Wiring diagrams are commonly used in various fields, including residential wiring, automotive systems, and industrial machinery. They provide essential information for troubleshooting and repairing electrical issues. By following a wiring diagram, technicians can efficiently identify problems and make necessary adjustments to ensure that the system operates correctly.