A wiring diagram is a visual representation of an electrical system, showing how different components are connected. It uses symbols to represent various electrical elements, such as batteries, switches, and light fixtures, making it easier to understand the flow of electricity. These diagrams are essential for troubleshooting and designing electrical circuits. Wiring diagrams are commonly used in various fields, including automotive, home wiring, and industrial applications. They help electricians and engineers ensure that systems are installed correctly and function safely. By following a wiring diagram, users can avoid mistakes that could lead to electrical failures or hazards.