91 Dodge Caravan Intermittent Instrument Cluster

91 Dodge Caravan Intermittent Instrument Cluster
Due to intermittent failures of the instrument cluster, my wife took into one of the local garages while I was out of province last year.
Said garage replaced instrument cluster with a used one. Worked for a bit and then started acting up again. Same story next time she took it in. Wife said it seem to be worse in wet weather (though I have personally seen it die during this hot last summer). The unit now displays absolutely nothing except for a couple of momentary lights while starting the vehicle and "Check gauges" constantly on while operating the vehicle.
My Chilton's points to a defective instrument cluster voltage regulator, poor ground etc.
Seems Google only returns hits for such a voltage regulator up to '89; can anyone confirm this?
If indeed, the '91's have a voltage regulator, information as to where it's located on the vehicle would be appreciated.
Any tips regarding tracing, identifying possibly intermittent connectors and/or ground connections would also be appreciated.
Thanks! :-)
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.