sputnik 440
Capt Jim
I have an original bullet tach in my on my '67 console that has been modified to accept input from my MSD. It has been reliable for the last 3 years and for some unknown reason, it started to read twice what it should. Any ideas of how to troubleshoot. According to the invoice I got back when it was serviced and the electronics altered, the "guts" were modified in Europe. I believe Germany.