[net.auto] How to replace a burned out bulb

weil@dataio.UUCP (Steve Weil) (08/30/85)

I am sick of this c**p that headlights do not need to be reaimed when
the bulb is replaced.  THINK!  Perhaps this is why so many of you drive
around with misaligned headligts.  Let's think about what a sealed beam
headlight looks like.  Even if the glass case was of uniform thickness
and shape, the filament is little piece of wire held in place by other
thin pieces of metal.  This is supposed to be at the focus of a
parabola to get a well focused beam.  Even minor variations in the
placement of the filament will change the beam direction.  I have
changed lots of headlights (without disturbing the aiming screws) and
every time the beam has been way off.