Hard Starting 1990 FWD 100

[Theodore.Haug at rrd.com]

Hopefully, someone has encountered this before, and the fix is
simple....the patient is a 1990 Audi 100 FWD - the car has been starting
beautifully of late.  Until this afternoon anyway.  I recently replaced the
electronic portion of the ignition switch (three weeks ago), and the car
has been fine.  Today, however, she is difficult to start, and I have no
dash warning lights, or working instrumentation when the key is turned.
The accessory portion of switch works fine, I can turn on the headlights,
and the climate control unit is working.  Then I turn the key to the start
position and the starter turns and engages, but she doesn't want to start,
and none of the instrumention seems to work and no dash warning lights.

Has anyone encountered this before, and can tell me where to look, I would
really appreciate any guidance.

Humbly,

Ted Haug
90 100
90 V8 quattro
87 Coupe GT
94 Cabriolet