1997 Ford Expedition Owner's Manual - Page 201

Maintenance and care 3. Remove the electrical connector from the bulb by grasping the wire and pulling it rearward. 4. Remove bulb retainer ring by turning it counterclockwise about 1/4 turn, then slide the ring off the plastic base. 5. Without turning, carefully pull bulb assembly out of parking lamp assembly. 6. Insert the glass end of the new bulb into the parking lamp assembly socket. When the grooves in the plastic base are aligned, push the bulb into the socket until the plastic base contacts the rear of the socket. 7. Slip bulb retaining ring over the plastic base and lock the ring into the socket by turning it clockwise until you feel a "stop." 8. Push the electrical connector into the rear of the plastic base until it "snaps." 9. Align top and bottom ribs of parking lamp assembly with corresponding slots on front of vehicle. 10. Push gently until parking lamp assembly seats (you will hear a snap). 11. Replace screw removed in step 1. 202