How do you change a headlight on 2007 Mazda 3?

To change the headlight on a 2007 Mazda 3, first, open the hood and locate the headlight assembly. Remove the cover by turning it counterclockwise, then disconnect the electrical connector from the bulb. Take out the old bulb by twisting it counterclockwise and replace it with a new one, ensuring not to touch the glass part of the bulb. Finally, reconnect the electrical connector, replace the cover, and test the new headlight.