What is minimum electrical required to start my car?

The distributor only sends a signal of about 1 volt to the ignition module when spinning and no outside voltage goes into it.
That's why I say it doesn't hurt the distributor.
if left hooked up... wire from battery to positive side of coil... wouldnt the coil keep trying to send "power" to the distributor? ... only asking because I absolutely have no clue and you have knowledge ty