There's a ton in the archives about the insulation on the wiring degrading in the cars on engine wiring harness and throttle actuators on M104 engines from 1993 to 1995.

Here is a good thread on engine wiring harnesses:

http://www.peachparts.com/shopforum/tech-help/346497-1994-e320-sedan-running-rough-idol-hunting-surging-plus-brake-issue.html

__________________
Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".