Hi all. I have a 1992 300D with 60k miles.
A few weeks ago my tach stopped working. All other instruments are working fine.
I have check the connections and all looks fine.

I used to have a 190D and had intermittent tach issues but if I gave a light thump to the top of the dash it would work fine. Tried that here and no luck, tach is dead.

Any suggestions on what to do next?

thanks

Mark