At 07:10 PM 9/28/2009, David Beierl wrote...
>Gentlemen, we're mixing two subjects.  The 22uF is to damp the output
>of the AFM.
>
>The cap for the temp gauge is smaller, I'm sure.  I rather suspect
>10uF, but I'll have to look inside one to be sure.

This says 10 mF :
http://www.thesamba.com/vw/forum/viewtopic.php?t=168239 That pretty
much implies the need for an electrolytic.

My understanding is that the constant blinking is caused by a leaky
cap. It is probably just there as part of an RC circuit so the LED
blinks for a bit at power-on. Perhaps simply removing the old cap will
allow proper operation, except for that power-on indication.