Most of the engine harnesses for ALL M104 engines until 1997 are prone to excessive spliting. Therefore exposing wires & causing a myriad of problems.
It's no big surprise though. I mean Mercedes has these harnesses available at every dealer. For about $700+
As far as (W140) goes ? ?
But DOC is right on the money about the heater regualtor problem.
The bad part is that I am going to be buying a NEW harness for my 16-vlv. I thought $700 was expensive, but I am paying $954.00 (US$) for mine. OUCH ! ! ! !
1994 E500 (MY SUNDAY DRIVER)
1993 190E SPORTLINE LE W/ M104 SWAP
2000 BMW 528I (WIFEY'S CAR)
"Excuses are crutches for the unfounded."