Great --- I replace the tachometer capacitors and resistors as they are beyond there lifespan. The time consuming part is calibrating the needle balance IF you paint the needle. Occasionally a diode or transistor is bad. The big problem with the tachometers is the meter unit. There were three types, all quality. When they stop working they can NOT be repaired.miatawnt2b wrote: ↑Thu Sep 28, 2023 5:39 am The gauge cluster was one of the first things I worked on. Completely disassembled it, repainted with wrinkle paint, rebuilt all the gauges including new capacitors in the tach. Works like new.
The Corsa speedometer odometers tend to stop working. The main input shaft gear and intermediate shaft gear are both metal and wear out due to dried out lubrication. I figured out how to use the Monza gear and Clark''s makes the intermediate shaft (this was years ago).
Good looking car - enjoy.