See my thread "http://www.peachparts.com/shopforum/diesel-discussion/255906-ashtray-gauges-w124.html." Although this is about the 124, it refers to the 123 in which I had the same gauges, including turbo boost.

Jeremy

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970