Blau Wiring Harness for euro lights questions

Peter Schulz peschulz at
Fri Aug 29 13:08:30 EDT 2003


I have yet to have or hear of an issue about running non DOT headlights, be it from an insurance company or yearly emissions and safety inspection.
If it comes down to cost, call the dealer and find out how much replacement DOT lights cost..You'll find out that it's a wash.

the "dot" lights are hazardous to the safety of the cars occupants as well as others on the road.  The european lights ( make sure that you get ones from the continent so the reflectors are set for driving on the right side of the road) have a crisp cutoff with a flare on the right to illuminate road signs.  properly set they are less blinding to an approaching car than the DOTs

the euro lights have h3 hibeams (dedicated) and H4 ( which has a hi and low beam filament) standard light switch on hi beam enables the H3 and the H4 Hi beam elements.

Do you really need the autocheck system to inform you that one headlight is out?  When you are running the Euros, the light output is not only greater , but much more efficient.  You will know when a light is out - you wont need the auto check to tell you.

(euros on all three audis)

At 10:29 AM 8/29/2003 -0500, Gordy_Schesel at wrote:

>I'm interested in how this works out for you, Chuck.  I got my 200 a year
>ago in October and have been interested in doing the euro-light conversion
>also.  And we all know how inadequate the OE light assemblies perform, even
>when newly replaced at a cost of ~$300 per side.
>I'm concerned about the down-side to the conversion.
>...The cost is ~$750 including the harness
>...They are not DOT approved (will my insurance company have issue with
>that if something happens?)
>...The auto-check system will no longer test the light circuit and report
>as before(?)
>I'm puzzled by your "H1/H3 bulbs on a separate switch" comment.  What bulbs
>are being replaced; and with what?   What bulbs are normally going to be
>lit when the headlight switch is flipped on?
>'91 200 20v tq wagon, white, 109k miles, totally stock so far.
>'91 100 10v quattro, bamboo, 196k miles, also totally stock.
>I am about to install my Euro lights. THe Blau harness gives you a
>option to put the H1/H3 bulbs on a separate switch, so as to not blind
>the innocent.
>Have any lucky souls here used this option? If so where did you put the
>switch inside the car? (neatly)  Has anyone figured out how to set it up
>so the H1/H3 bulbs will only light up when the high beams are selected
>and the switch is on. I am assuming that the Blau optional switch method
>lights the H1/H3 bulbs regardless if the highs are on.
>I was looking at the harness and thinking (a dangerous thing) that I
>could route the power that energizes the regular high beam relay to the
>extra relay for the H1/H3 bulbs and use the switch to supply the ground,
>that way the blaster lights would only be on with the other high beams
>when they are selected. This would be preferred for when I am out
>driving and would not have to move my hands off of the steering wheel to
>turn off the blaster bulbs.
>Chuck Pierce
>91 200 tq 20v Avant    Euro lights to come and Samco hoses
>200q20v mailing list
>200q20v at

Peter Schulz
1990 CQ (awaiting S2 3b engine transplant)
1991 200 20v TQW indigo mica
1991 200 20v TQW titanium grey
Chelmsford, MA USA
peter at

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