1993 190E Instrument panel

I have tried to search for the answer to my problem in previous posts, but either I am searching for the wrong keywords or I do not know how to describe my problem correctly. PLEASE help. The gauges on the far left hand side of my instrument panel have just died, not the whole panel, only part of it. I have checked all the fuses and do not believe that any are blown. My speedometer, clock, and tachometer all work but the oil temp gauge, the fuel indicator and battery charge gauge are completely useless. This is very strange because everything was working fine just this morning and now this afternoon, they go bad with no warning at all. Any and all help is appreciated, even if you can just point me in the right direction for keywords to use in my search.