This comes under the "for what it's worth" heading. After taking the steering column apart I have become convinced the problem is NOT in the column or instrument cluster. I say this because the tach seems to work on a voltage reduction. At engine on but not running, the tach gets 12.+ volts. As the engine runs up in rpm, the voltage going to the tach is reduced.
I considered a short in the turn signal indicator lights, but still had the problem with the indicator lights removed from the instrument panel. I tried disconnecting the power supply to each horn for the same reason, no change.
Now on the turn signal, engine running and turn signal on, the voltage goes from 12.+ to 11.5 or so. I didn't measure the full fall in voltage from the horn because I figured the voltage drain would burn out a fuse (8 amp, number 12 I think) like it has in the past.
Maybe I should go buy a new VW....
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