Well I finally got what I wanted, a tach in my 280CE that is. I bought a diesel tach from a guy on MS and thought it would work, but it didn’t, I couldn’t even adjust it to read correct. So I went to the JY and bought 2 tachs from a 4cyl 190 and a 6cyl 190. So I mounted the 190 tach and its gut to my W123 back plate so it would screw into the cluster. Well it turns out that the W201 faceplate is a little smaller than the W123 housing so it had a gap in the top of it (see pic). So I though I would try to put the W123 diesel face plate on the W201 tach guts and adjust it to read correct. Well that worked, so now it fits properly and read properly. I have a hand held tach so that how I adjusted it correctly. Here are the pics, what do you think?

The 190 tach in the W123 housing, see the gap at the top:



The final result, the diesel faceplate mounted to the W201 tach guts:

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1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg