Ford F-150 2010 Owner's Manual page 80

Lights
3. Loosen the three retaining bolts
(two at top of lamp, one at lower
inboard corner).
4. Once the three retaining bolts have been removed, slide the headlamp
assembly forward, disconnecting the two snap attachments at the fender.
5. Disconnect the electrical connector from the bulb by pulling rearward.
6. Remove the bulb and socket by
turning it counterclockwise, then
pull it straight out.
WARNING: Handle a halogen headlamp bulb carefully and keep
out of children's reach. Grasp the bulb only by its plastic base
and do not touch the glass. The oil from your hand could cause the
bulb to break the next time the headlamps are operated.
Install the new bulb in reverse order.
Replacing front parking lamp/turn signal/sidemarker bulbs
1. Make sure that the headlamp control is in the off position and open
the hood.
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