When did the m104 wiring harness change?
 

What "year" if ever did the wiring harness for the 104 motor change so as not to need replacement at 100k miles? Thinking about buying another 300E but the 93 I had had wiring problems as well as the wires on the throttle position, part alone was 1500.00

The "good" wiring harness didn't really come until the 210 body which has other problems of its own. You may be overly concerned with the issue. There are very few cars on the road that have not had the problem harness replaced. Also while you may have paid $1500 for the harness it has always been available for less than half of that, and it's a fairly easy DIY project. Better just to look for a nice car.

1993 to 1995 had the troubled wiring harness.

Thnaks. Also where can you find a Electronic Throttle actuator for 500.00, I sure would like to know in case I have to replace it?