I readjusted my pickup and adjusted it too close and the pin snapped off the end of the pickup. Where do I find a new one. Do they make them new? Does anyone have one available? Hopefully this was the problem all along and when I put the new one in everything will work?

I also read this in another post. Is this true? It was pertaining to a 1985... "The most common part to fail in regards to an inoperative tach is the OVP (overvoltage protection relay), mounted under the passenger hush panel. The only test I know of to check this relay is a "tap test". Check the fuse on the relay first, then give it a gentle tap while the engine is running. 99% of the time, the tach will start to work. It all works in conjuction with the Klima and EGR computer. The OVP protects compoments from voltage spikes. Alan"

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Current fleet-
2015 BMW 750i xDrive
2009 BMW 535i xDrive
2004 Chevy Avalanche 4x4
1993 Mercedes 300SD
1993 Mercedes 300SE (parts car)

Previous Benz's-
2001 Mercedes SL500
1983 Mercedes 300SD
1980 Mercedes 300TD
1996 Mercedes E300D
1999 E300DT
1984 300TD-T
1988 Mercedes 560SEL (parts car)
1979 300SD
2003 E500
2004 S430 4Matic
2001 E55
2003 E430