I have searched and gotten mixed results online.

I would like to add a tach to my steering column on my 69 Bee. 383/ 4 speed. Using stock coil and ballast resistor.

Some say it won't work properly with Pertronix and others say that theirs functions normally. I am hesitant to just buy a tach and try it as I am not an electronic wiz.

What say you guys? Is there a certain tach I can buy that we know will work properly? I appreciate any help you guys can give. Thank you.