Instrument cluster digital dilemma

[bcinphx]

I hate to bring this back up BUT, after replacing the ignition switch and pulling the gauge panel out and re-inserting the connectors...My gauges are once again going on and off. All I can think of is there must be a ground somewhere for the gauges that is loose. Anybody have an idea where to look? I can tap the right corner of the gauge assy and the gauges will work for a short period of time. I don't think dialectric grease is the answer. Any ideas would be appreciated.