FORD 2010 Expedition v.2 - Manual (Page 126)

5. Install the bulb socket in the lamp assembly by turning it clockwise.
6. Install the lamp assembly and secure it with the retaining screw.
Replacing approach lamp/mirror turn signal bulbs (if equipped)
For bulb replacement, see your authorized dealer.
Lights
126
2010 Expedition (exd)
Owners Guide, 2nd Printing
USA (fus)