Don't use anything too harsh to clean the inside of the lens, you don't want
to damage the reflector surface.  Regular Windex should do the trick pretty
well.  Here are a  couple posts from thesamba:

http://www.thesamba.com/vw/forum/viewtopic.php?t=179098
<http://www.thesamba.com/vw/forum/viewtopic.php?t=179098&highlight=lens+clea
ning> &highlight=lens+cleaning

http://www.thesamba.com/vw/forum/viewtopic.php?t=378845
<http://www.thesamba.com/vw/forum/viewtopic.php?t=378845&highlight=lens+clea
ning> &highlight=lens+cleaning

Most of the time a good cleaning and buffing with a soft terrycloth towel
will do the trick for the outside of the lens.  If it is really bad, you
could try a glass polishing kit:

http://www.eastwood.com/professional-wind-shield-headlight-kit.html?srccode=
ga030170

Good luck,

Jay

-----Original Message-----

From: Marius Strom [mailto:marstrom@microsoft.com]

Subject: RE: Vanagon rear lights and the pathetic headlights

Hi Jay - what's the recommended procedure to clean the outside/inside of
these glass lenses?  I've been struggling with that - mine have a milky
sheen to them.  I can find 3M products to deal with plastic lenses, but I'm
not finding anything listed for glass -- especially the inner surface.