Buick 1993 Roadmaster Owner's Manual page 267

I -
Halagen bulbs have pressurized gas inside and
can burst if
you drop or scratch the bulb. You or
I
others
could
be injured. Take special care when
handling and displssina of halogen bulbs.
l l
Headlamp Bulb Replacement
2.
T u r n each of the access cover retainers 1/4
turn and
lift the cover off.