instrument cluster voltage regulator p/n, 5ksq

[Matthew Caprio]

CAN someone please tell me the part number on the voltage regulator IC chip
on the back of the instrument cluster, so I can procure one before taking
it apart?  I believe mine went bad (fuel and temp gauges both reading hi
all the sudden-- over the max).  

I want to just open it up and swap it without having to drive around for a
couple of days with the guts hanging out while I get one...

I'm not (necessarily) talking about the Audi part number-- I'm talking
about a string of digits on the chip-- probably a TI or Motorola part number.

THANKS!
Car is an 88 5ksq
----
88 5ksq
Matthew Caprio
Austin, TX