Ignition Coil Installation

Some of that info in post #12 is wrong. There is nothing like 700-1000v of back EMF across the coil. More like 200-250v for inductive ign. It is that back EMF that generates the high sec voltage, according to the Turns Ratio of the coil. The MSD Blaster 2 coil has a 100:1 TR. It doesn't generate a sec voltage of 100,000v....