How do you replace the Low Beam Headlight for an Infinity 2002 Q45?

To replace the low beam headlight on a 2002 Infiniti Q45, first, open the hood and locate the headlight assembly. Remove the plastic cover or dust cap on the back of the headlight assembly by twisting it off. Disconnect the electrical connector from the bulb, then carefully unscrew the bulb socket and remove the old bulb. Insert the new bulb into the socket, reattach the electrical connector, and secure the cover back in place.