TOPIC: '59 Mark 35A Tach Setting

Almost ready to install a restored Mark 35A and I intend to use one stator output/rectifier input lead as a signal for a tach. What setting should I set the tach to - ?

If memory serves me correct there were 12 coils, and with 2 output leads I'm leaning to setting the tach for "6" pulses, sound good?