The "indicator" is a white LED with a blue cover over the top of it.
Basically the 12V from the highbeam goes to a resistor and then to the LED
and then to ground.  These are all on a plastic flim that is on the back of
the instrument cluster.  Sometime condensation makes some corrosion and the
connection is intermittened... wiggle the LED and the resistors and this
will give you a rust free connection for a while.  If the LED is dead, it
has to be reaplaced, they are either working or dead.  Radio Shack has LEDs
in all sorts of colours.  I get mine from dead computers.  Hope this helps!

At 01:45 PM 31/03/2000 -0800, Jose R. Moscoso wrote:
>Fellows and fellaws:
>Some time ago there was a subject running around about high beam led light
>dimming to off.  I have just receive this fairy on my '84 Westfalia.  The
>LED was coming on dimmer and dimmer each time until know it is impossible to
>guess if its on.
>
>I don't recall having seen a final determination on cause, possibilities or
>cure for this, except that it was not clear if this was a bulb or an LED.
>Can someone help?
>
>

--   David Marshall -                    - Quesnel, BC, Canada   --
--    78 VW Rabbit, 80 VW Caddy, 84 VW Westie, 85 VW Cabriolet   --
--       87 Audi 5000 Quattro, 88 2.0L VW Syncro Double Cab      --
-- David's Volkswagen Home Page        http://www.volkswagen.org --
-- Fast Forward Autobahn Sport Tuning  http://www.fastforward.ca --
-- david@volkswagen.org (pmail) or vanagon@volkswagen.org (list) --