How do you change a headlight bulb on a 1992 240?

To change the headlight bulb on a 1992 Volvo 240, first, open the hood and locate the back of the headlight assembly. Disconnect the wiring harness from the bulb by twisting it counterclockwise, then carefully remove the old bulb. Insert the new bulb, ensuring not to touch the glass with your fingers, and reconnect the wiring harness. Finally, test the headlight to ensure it works before closing the hood.