The standardized system of colored wires used in automotive lighting circuits identifies each wire’s function. For example, a brown wire might indicate a ground connection, while a green wire might signify a right turn signal. This system ensures consistent functionality across different vehicle makes and models.
Standardized wiring colors simplify vehicle maintenance and repair by allowing technicians to quickly identify the purpose of each wire without consulting complex diagrams. This consistency promotes safety by reducing the likelihood of miswiring and potential electrical faults. Historically, variations in wiring practices across manufacturers led to confusion and increased repair times. The adoption of a standard color system streamlined the automotive electrical repair process, contributing to greater efficiency and improved safety standards.