The headlight bulbs on your Peugeot 307 require that you maintain them regularly to keep you safe when driving at night. The bulbs can go out for a variety of reasons, including everything from just wearing out to a shortened life due to oils from skin coming in contact with it when the bulbs are installed in the car. You can replace the bulbs yourself in just a few minutes, ensuring that your headlights are working when you need them.
Determine which bulb is needing to be replaced and then locate the black circular cover that sets behind the headlight.
Disconnect the two pin connectors on the circular cover, pulling them out by hand until the cover is loose.
Pull the cover off the back of the headlight and locate the retaining clip that holds the bulb in place.
Push the spring loaded clip in and turn counter-clockwise to release it from the socket, then pull the bulb out of the clip.
Place the new bulb inside the clip and reinsert the clip into the back of the headlight, turning it clockwise until it snaps into the socket.
Reattach the black circular cover to the back of the headlight, snapping the pins back in place.
Use a clean dry cloth when handling the new bulb to prevent the oils on your hands from touching the glass and reducing the life of the bulb.