All dash instruments on strike on my 200

[Mike Posner <posne@cts.com>]

The electronic dash instruments and the rearview mirrors   stopped working
at once.  Dash lights are working, as are interior lights, but no
auto-check display, no guages, no speedometer.  Dont see any fuse covering
all this stuff. Anyone
btdt with this gremlin?   Alan cordeiro posted   about similar display problems
8/23/94  and had to pull the instrument cluster out and clean all
connectors and grounds off.   His problem wasent  with the guages though.
          
This is on my 90 200-   Thanks   to all               for any suggestions. Mike
Posner.  San Diego.