Xenon headlights

[Tom Nas]

At 16:19 14-9-00 -0500, Rob Andrews wrote:
>Slightly incorrect...not a lot of work.  Drop in Euro S4 replacements.  Goto
>www.lltek.com and they have em for sale.
>I have em and love em.  I'd drop that kind of money again in a heartbeat for
>this night vision
>Later!

I have the Audi mechanics training booklet for the S4, and it describes the 
entire Xe installation. Because Xe lights are prone to dazzling oncoming 
traffic, the law here in Europe requires these lights to be continuously 
aimed electrically according to load, road orientation, speed etc. For this 
purpose, Audi has installed a couple of sensors (three, if I recall 
correctly) and a number of pickup points on other senders. This setup sends 
corrections to the motors aiming the lights several times a minute, more 
frequent at higher speeds.

What I think you have is either a projector setup (excellent light and a 
lot easier and cheaper to install) or a sort of 'halfway' solution with the 
Xe lights but not the aiming equipment. Looking at the Euro A4 wiring 
diagrams, I know the Xe sensor wiring is not in place in the 'lesser' 
non-Xe-equipped models. I think (can't find my copy of the S4 options list) 
that Xe is optional here, and projectors are standard.

Regards, Tom