My instrument cluster,oil gage,water temp.gage,fuel gage,stopped functioning.The light is working.Any sugestions?Thank you.

The fuse for the instruments is out. It is in the fuse box under the hood.

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Benzmac:
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM

Thank you for your help.After a second look I found the broken fuse.The metal was just broken,and hardly visible.

You're lucky you fixed that fuse promptly. When that fuse blows, so does the rear brake lights (at least, that's what happened on my '88 W201).
BTW, a suggestion re stop light bulbs -- When I'm waiting at a light in front of a car, I always take a look at that car's lights or shiny trim to see if I can see all of my brake lights -- it lets me notice any burned out bulbs before I get rear-ended (my '88 W201 doesn't have a "burned out bulb" warning module like the W124's do).
Regards