Pertronix 1381a
When we hit the start -
Battery power gets drawn down to something less than 12 Volts. It could be as low as 9 or 9.5 Volts and still be good enough to get started.
So that's why it would be good to know if the minimum voltage the Ignitor unit will need to operate.
But it seems pretty clear to me that the instructions are saying this will work, and survive. So not much gained by trying to find out what minimum voltage is needed. If it works it works.
If you want to check the resistance in the coil's primary windings, measure the resistance from coil plus to coil negative.
This is the specs from a '70 Plymouth FSM, for a 318. My recollection is all of the coils and ballast resistors of this era have specs close to these.
The confusion here is someone at peteronix dumbed down/simplified things so they no longer match reality. :BangHead:
When we hit the start -
Battery power gets drawn down to something less than 12 Volts. It could be as low as 9 or 9.5 Volts and still be good enough to get started.
So that's why it would be good to know if the minimum voltage the Ignitor unit will need to operate.
But it seems pretty clear to me that the instructions are saying this will work, and survive. So not much gained by trying to find out what minimum voltage is needed. If it works it works.
If you want to check the resistance in the coil's primary windings, measure the resistance from coil plus to coil negative.
This is the specs from a '70 Plymouth FSM, for a 318. My recollection is all of the coils and ballast resistors of this era have specs close to these.
