Just today my oil pressure ,water temp and fuel gauges along with my tach stopped working ,at the same time my AC Compressor's Clutch will not engage......I looked for a blown fuse and all were good.....A couple of hours later I drove the car and everything worked fine again....Just tonight same problem reoccurs....What common link do all of these devices share as it is apparent that the failures are related????????

Thank You , Have a GREAT day!!!!!!