[V8] Headlight question

[Roger Woodbury]

I have had four Audis with European headlights.  The first one was an '89
Avant, the second the '93 V8 that eventually became the legendary (?)
Gentleman's Express, and the third was The Old Gray Mare, that was my Dad's
former front wheel drive 100.  My wife's C-4 Avant also has European
headlights.

The Avant's headlights were installed for me by the dealer, and the V8's
headlights were installed by my current wrench.  In both cases neither
installation triggered the bulb alarm.  Both installations relayed both high
and low beams separately, and I think the Avant used four relays.

The 100 installation involved simpler European headlights using just an H4
bulb.  I did the installation relaying both headlights' high and low beams
separately...four relays.  The bulb alarm always came on whenever low beams
were selected.

My wife's C-4 Avant has the same issue, and her headlights were installed by
the wrench.  

Question: why was it that the '89 Avant and '93 V8 had no trouble accepting
the European headlight conversion with the bulb monitor working properly,
but the other cars don't?

Now with the "new" V8, I am probably not going to even think about Euros as
the headlights seem adequate, and I am not planning on doing a lot of night
driving anyway.  That may change as we move further into fall, but I now
know how to neutralize the buzzer and light warning.

Incidentally, my wife likes to see the little bulb warning, and dosen't want
it "fixed".  Wimmen!

Roger