Well, I think I found one of the functions of the ETA besides ASR. Since I took the canon plug off with my engine running last week, my cruise control is completely inoperative. Also, I'm getting a DTC 3 on Socket 7 of my 38-pin connector. The code cannot be cleared. I noticed that my idle speed has dropped from about 500 RPM to 250 RPM too. I checked the fuses in the regular box. I don't want to jump to the conclusion that it's a bad cruise control amplifier, since I think the problem originated from my own monkeying with the ETA wiring. Any ideas?

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1993 400E, 256,000 miles (totaled)
1994 E420, 200,000+ miles
1995 E420, 201,000 miles