1999 Ford Crown Victoria Owner's Manual - Page 180
1999 Ford Crown Victoria Manual
Page 180 highlights
Maintenance and care 2. Install the bulb retaining ring over the plastic base until it contacts the rear of the socket by rotating it clockwise until you feel a "stop." 3. Connect the electrical connector into the rear of the plastic base until it snaps, locking it into position. 4. Install the protective cover over headlamps locking it in place with three knobs. 5. Turn the headlamps on and make sure they work properly. If the headlamp was correctly aligned before you changed the bulb, you should not need to align it again. Replacing front parking lamp/turn signal bulbs 1. Make sure headlamp switch is in OFF position, then open the hood. 2. Remove the protective cover by turning the three knobs to the unlock position. 3. Disengage the safety snap on the connector by pulling upward slightly on the clip. 4. Disconnect the electrical connector from the bulb socket. 5. Rotate the bulb socket counterclockwise about 1⁄4 turn and remove from lamp assembly. 6. Carefully pull bulb straight out of the socket and push in the new bulb. 7. To complete installation, follow the removal procedure in reverse order. 180