e: Ultrawhite Headlights(& relaying)

[Ben Swann]

Steve, et.al. regarding the below I am mostly in agreement, however my results for the dual relay setup(actually quad when you do both high and low beams) did not eliminate the bulb out warning.  I have found the only effective way to remedy this is to bend the terminal contact over on the headlight relay for the bulb warning.  Also, this reduces the wiring complexity, as the quad relay was really a massive overkill and excessivly timeconsuming.

I have had good results with just relaying the stock headlights without any other changes or just prior to installing higher wattage bulbs.  I have noted a marked improvement just by relaying alone, indicative of the voltage drop present in the stock wiring through the switch.  This was particularly tru in the older coupe and quattro I did.

I don't bother getting a pre-made harness, as much of the time for work to be done will be necessary regardless of if the wires are pre-cut to the correct length, etc.  The additional time save is merely for the crimping of the terminals which only adds about 1/2 an hour.

Ben

[> the intensity of my bulbs are pathetic.  

Two words: Relays & Eurolights.
If you relay your lights, you eliminate the voltage drop caused by all power going through the switch contacts, and small gauge wire. I bought my harness at www.suvlights.com . It was pretty much plug and play, and I am very happy with the quality and fit. Blau also sells harnesses (expensive), and Daniel Stern sells a kit that allows you to build your own with his high quality hardware, and your wire. One issue with relaying is the autocheck feature. It will cause you to have a continuous bulb out warning. There are a few ways around it. One is to jumper it out completely (you can see when a headlight is out anyway). This is the easiest. But, I'm not sure about '95, but on my '96 that autocheck module also gives warning if a running light is out, which the driver would not otherwise see. A better way is to jumper together the two shunts for the headlights in the warning module, thus eliminating only the headlight warning. A third way is to individually relay each side so tha t both sides see current, thus no warning. A third way is to buy a modified module from Blau (expensive). 
http://www.audipartsworld.com/parts%0dept/bodyelectrical/c2/c2b/c2b2/c2b2b/euro_wiring_harness.htm 

A fourth way is to run the actual light current back through the module. But this approach is counterproductive in terms of eliminating voltage drops.
Adding Eurolights will dramatically improve your visibility by improving the light pattern, and allowing you to use H4 bulbs. Then you can get Osram Silverstars (NOT Silvania Silverstars). See the bottom of this page: http://www.danielsternlighting.com/tech/bulbs/blue/good/good.html 
Euros can be pricey. But they're well worth it IMHO. You might find a set used. Some listers have bought theirs from German e-bay at, I gather, considerable savings.
Oh; Also you should read this: http://www.20v.org/light.htm 
And search the audifans archives. There are many, many, many, many, many threads on lighting.
HTH
Steve]