Elliot w/ the '93 EV MV Weekender inquired:

>Has anyone solved this? Or eliminated potential sources?

I don't know if Jack Lowry has read your post yet, but here's
his response from 6/4/96 (or 4/6/96, for you Euro types...):

>Don't try this if you are uncomfortable with your soldering abilities.
>Steps to repair: (I'll keep them short because most the people that hang 
>out here seem to know which end of a screw driver to hold.)
>
>1. remove steering wheel.
>2. Remove cover around the steering column.
>3. remove turn signal and wiper switch from the column (there are 2 or 3 
>screws to do this, do not remove the
>torx head screw. You may also have to remove some wires from the switches.
>4. remove black plastic inside of gauge cave. (two screws at top)
>5. remove plastic face over gauges (two screws one on each side of cover)
>6. Remove tach ( It Just plugs in)
>
>The problem is related to three solder connections in a row at about the 
>2:00 position in the hole where the tach was.
>These connections need to be reheated with possibly a little solder added. 
>There are some voltage measurements
>that have slipped my memory that can also help to tell if you have a bad 
>part or just broken solder connections.
>

'Hope this helps.

Norman
'93 EV MV w/ psycho fuel & temp gauges