Thanks for sharing all that. I would absolutely want a working tach vs a 'correct' tach. I have had so many problems with tachs that I deleted all my MSD stuff. The little tach output terminal on a MSD 6 would only work with my 1977 TA that had a factory gauge/tach. But the convoluted MSD wiring just annoyed the ell out of me. Now I just use the GM HEI and most of my issues are gone. My hood tachs will be another thing so I think experimentation will be in order. I will NOT go back to points just so the tach works! OLY says his 1968 hood tach works fine with his brand new Pertronix HEI so obviously he has it nailed.
