Hi,
Mercedes have done some Safety Recalls for a lot of cars, at least if you read the information given by Alldata at:

http://www.alldata.com/TSB/35/92355320.html

A snip from that page:
95-0223........MAR 95......Wiring Harness Chafing/Shorting
95V031000......FEB 95......Wire Harness Protecter Installation


Good Luck!
/Patrik S.

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Patrik Sjoblom....1993 MB 320 CE......Bought Jan 2001. Only 16.8 mpg
Stockholm.........Silvermetallic....DEFA immobilizer/alarm + Original larm
SWEDEN............17x7.5 ET35 wheels with 215/45-17 Kumho 712 ECSTA .