Thanks, Suginami, Actually I figured you all figured we'd do the wiring harness last. I've dreaded that harness since before we bought the car last fall, and have read your many posts since then. Earlier this week I called MBUSA, and they said it's probably time to replace it. I then called the dealer we bought it from (600 miles away) and they didn't volunteer anything, but said if it isn't crumbling they wouldn't change it (words to that effect). I figured I would think up a proposal to get something out of the dealer, since I'll most likely be stuck with doing the labor. So far the insulation I can see looks ok--but it is rock hard. I could have damaged the wiring while changing the plugs.

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TomO
94 E320 Wagon, 170k, totalled in 2006
2002 BMW 525i Wagon, 75k
1991 BMW 318is (two of 'em)