How Do You Read Automobile Wiring Diagrams?
Automotive wiring has been standardized over the decades, and most cars will have “color-coded” wiring for lighting, radio, ignition, and secondary systems. This color coding makes it easier for the layman to quickly repair most automobile wiring issues. You can learn to understand the wiring diagrams by following some basic principles. Locate the source of the electrical problem, such as a damaged relay. Find the location of the issue shown in the diagram. The repair manual will provide troubleshooting steps to determine which electrical component is damaged or malfunctioning. After locating the faulty part on the diagram, usually by labels or shape, the colors of wire on the page should exactly match the wire colors in the vehicle. This will assist in tracing the wire back to it’s power source, or on to the next electrical circuit. Symbols on the diagram could vary, but typically follow electrician standards. In rare cases, the diagram could be in black and white, or printed without
