[200q20v] Blau wiring harness for new Bosches seems miswired

hah at srv.net hah at srv.net
Mon Apr 2 12:15:00 EDT 2001

>We had a sunny weekend here, I popped the new units in on Sunday.
>I missed the warning ( was there one ? ) about the euro units hitting
>the battery jump terminal on the passenger side, among other issues.
>After finishing as the sun was going down, I began testing.  The
>normal beams seem OK, but the driver's high was dead.  After going
>back out in full dark to check out the road-going improvement of the
>low beams ( wonderful! ), I noticed that it wasn't the driver side
>city light that had been coming on, but the hi-beam at a low power.
>Since the lows seemed OK and they are good enough for normal highway
>driving, I haven't yet futzed with this any more.  I have to go back
>in and change out a last minute add-on to deal with the wrong part
>that Blau put in the harness for the city lights, they provided a
>connector for and described a plug that didn't exist on my car.
>My question here is are the plug contact positions in the Bosch
>assemblies the same on each side or mirror images ?  The harness
>instructions did not include a schematic and only mentioned that
>the blue and brown wires should be at the top of the connector.
>I threw my Fluke in the glove box and might get a chance to diag
>this for lunch today, but would appreciate any correct info that
>would save me a bit of time.

See http://www.sjmautotechnik.com/eurolght.html (yes, it's missing the "i" 
in "light") - they are the same on each side.

I'm not familiar with the Blau harness, but "city light instead of 
highbeam" sure sounds like a mis-wired H4 to me. Ground and low/high 
swapped, so high/low goes through both filaments?

Henry Harper
1991 200 quattro, 112k
1988 GTI 16v, 217k

More information about the 200q20v mailing list