Wire harness failures are very common on '92-'95 M104 engines like yours. The insulation goes bad and flakes off the wires.
Do a search under "wiring harness" and you'll get hundreds of hits.
2001 E430, Bourdeaux Red, Oyster interior.
1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".