Finally got Tach calibrated to Emtron controller with a third party interface. In the interim a "Button" part # 62-12-8-580-176 was misplaced/lost. Looked it up in RealOEM and that appears to be the name and part number. It is the finger tightened nut that goes on the post behind holding the instruments in place. Tiny part but the tach won't sit flush without this nut. There is also a washer that is spec Gasket Ring part # 07-11-9-963-016.
Any help appreciated, Jon
Any help appreciated, Jon