Mercedes sells an adapter that plug that makes the newer display wiring compatible with the older display wiring. They supply it with all new display they sells. From what I just saw on "ALL Data" the only difference is that in your case PIN 4 Is not used, but there may be more to it than that.

I know I read a post here not long ago that explains what you need to do. If you do a search. you will find it.

Phil

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'95 E300 Diesel, 264,000 Miles. [Sold it]