How do you change the headlight bulb on a 1985 Volvo 240?

To change the headlight bulb on a 1985 Volvo 240, first, ensure the vehicle is off and the keys are removed. Open the hood and locate the headlight assembly; twist the bulb socket counterclockwise to remove it. Carefully pull out the old bulb and replace it with a new one, avoiding touching the glass. Finally, reinsert the bulb socket into the assembly and twist it clockwise to secure it in place before closing the hood.