How do you wire an ignition switch to the right color wires?

To wire an ignition switch, first identify the wires based on their colors, which can vary by vehicle make and model. Typically, the red wire is the battery power, the brown or yellow wire connects to the starter, and the other wires (often in colors like green or black) connect to the ignition and accessories. Use a wiring diagram specific to your vehicle to confirm the correct connections, and ensure all connections are secure before testing the ignition. Always disconnect the battery before starting the wiring process to avoid electrical shorts.