1991 Chrysler New Yorker Fifth Avenue, Cleaned Dash, Now Speedo Dead :-)

Have a 1991 Chrysler New Yorker Fifth Avenue. Decided to clean the dash board, and took the plastic off for the instrument cluster.

Cleaned everything and now the speedometer does nothing. All other gauges appear to work.

Just starting to research the point of failure. Any suggestions on where to start?

Is there a fuse to check? Are there common issues I should check.

Appreciate in advance you reading, and any pointers you can provide.
Author: jwhitney