Thanks for the info on wiring diagrams, I will check that out as soon as I get a chance.

I stated earlier that the cruise control didn't work, well thats not entirely true. Last weekend I found that the cruise DOES work, but only at 48 mph and below. I tried stepping it up slowly from about 45 but once it hits 49 mph, it shuts off. What could be the cause of this symptom?

Having put a few tanks of gas through the car, I now have an idea of mileage. Back and forth to work (95% CITY) I am getting just over 17 mpg, and that includes quite a bit of new car leadfoot driving. Last weekend, I drove to the beach (round trip about 300 miles) and got 22.7 mpg. This included 45 minutes of stop and go freeway traffic and one sustained blast to 100 mph on a two-lane for a speedo check. BTW, 100 mph indicated = 96 mph actual on GPS.

I've read a few posts about mileage and mine seems to be fairly decent in comparison. If my engine module is in some sort of default/not working mode, shouldn't I be getting worse gas mileage?

Also, and I know this is a stretch, could someone with a 1997 E420 please remove the black shield (about 1.5" x 3") over the top of the plug closest to the fender (on the ME1 module) and see if there are any factory splices? Specifically on the wires I mentioned in the earlier post. If possible, a picture would help. I don't know, but it is probably unlikely that startekinfo.com would have a picture of the wiring UNDER the plug cover - Isn't it?