[72-SS-L48]

Hi Guys,

The Sun tach in the 69 Z was not accurate so I pulled it out today. Since I did not want the tach wires to dangle, I installed another Sun Tach I had. It's the same model number and NOS perfect. It did not work in the car. I swapped that one for another and that didn't work either. Finally, I put the original tach that I removed back in it to see if that worked. NOTHING! What did I do? What happened that no Sun Tachs will work? I did not alter the wiring.

Thanks,
Dave