How do you check continuity in car wiring?

To check continuity in car wiring, you need a multimeter set to the continuity or resistance (ohm) setting. Disconnect the battery for safety, then connect one probe of the multimeter to one end of the wire and the other probe to the opposite end. If the multimeter beeps or shows a low resistance reading, continuity is present, indicating that the wire is intact. If there is no sound or a high resistance reading, the wire may be broken or damaged.