Stephen,

Perhaps to help a bit more, follow the speedo cable from the inside of the
left front wheel hub to a little (pack of smokes sized) black box.  You
should be able to find the button with a bit of exploring.  Push it in with
a pencil, etc. till you hear a click.  If you have an assistant who can look
at the light while you are pushing in the button, he can verify the light
has gone out and save you hopping up and down to verify that the procedure
worked.  I've never had to drop the spare tire to get at this box, but I
suppose it could make access easier.

The tranny drain plug is on the side of the tranny, a bit less than halfway
up the right side (with the shift linkage) about four inches from the front
(vehicle front) of the tranny.  It is a 17mm allen head fitting and will be
flush or slightly recessed.  DO NOT remove the drain plug until you have
determined that you can remove the fill plug (think about it).

Good luck,

Karl Wolz
----- Original Message -----
From: "Stephen Hosick" <peterho@SWBELL.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Tuesday, April 16, 2002 12:29 AM
Subject: HELP!My vanagon is missing OS sensor switch and trans fill plug

Hey all,
  So my OS light came on the other day,and I replaced it(I immediately
pulled over and bought one and replaced it in the parking lot)and now I
can't find the damn switch to turn the light off.Then I went to drain and
fill the transmission,and I couldn't find a fill plug.Somebody let me know
where this stuff is found!!!
Stephen
84 Vanagon GL
"The Nosfaratu"