On Nov 13, 2009, at 5:37 PM, Marc Sayer wrote:

> Many modern headlight systems can not be properly aimed manually (by
> sight). A clamp on aiming device is needed to properly aim the
> headlights. That's what the bumps and protrusions on the face of the
> lenses are for, to properly orient and attach the aiming device to the
> headlight. Of course, as with many aspects of automotive repair and
> maintenance, just because there's a right way to do something, doesn't
> mean all (or even most) shops use the proper procedure.

Until about 1990 this was a true statement.  The little nubs are long
gone and now one needs something like the Hoppy Vision 100 or VA-25 to
properly aim headlights. About $1500 for the Vision. About $700 for
the VA-25....

Jim