Mercury Mountaineer 2003 Owner's Manual page 46

3. Remove the bulb socket from the
lamp assembly.
4. Carefully pull old bulb out of the
lamp assembly
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.
Reverse steps to reinstall bulb(s).
Lights
45