I cleaned the connectors on ground bus and everything seemed fine for about 15 minutes when I again lost the image on DIC. Cleaning of the ground did help a bit so I now wonder if there might still be related to a grounding issue. A line from the grounding bus must terminate to the car body at some location. Where might the location (*) be found so I can check and/or clean as well.
Gordo

You will have to pull out the cluster and check the green harness wiring in the back for cracks in the wiring. Its common on these units.
Please continue with your original thread.