On 31 Jul 96 at 14:42, William Abbott wrote:

> 
>     Yep, 80's VW products had something Blue that looked like an LED
> for high-beams. I always intended to get a 'spare' and see what it was-
> my guess is a lightbulb with a blue plastic cover. If its an LED, it'll
> turn ON in micro-seconds, if an incandesent lamp, milliseconds, so  if
> you're sharp-eyed, or can make a highspeed film or video of it
> you can tell without sawing the thing apart. An led will conduct only
> one way (its a diode after all) while a lamp will conduct both ways.
> 
On my 85 Jetta, I'm pretty sure it's incandescent for two reasons: it 
has a blue plastic 'cap' which covers a clear bulb fitting in the LED 
socket, and I've burnt out 2 of these, but *never* burnt out an LED 
in any of my VWs...

(I've never tried to buy one though - I had a spare cluster to 
scavenge one from..)
 

Shawn
'88 Westy 332k (Kyra)
'85 Jetta TD 350k (Jenni)