It is not a low voltage issue.
The instructions with the Mallory HyFire 6 state: 'This system delivers full voltage with a supply of 10-18v, & operates with a supply voltage as low as 8v.'
All of the 'box' igns [ Crane, MSD etc ] that I have seen work on the above voltages. I suspect they are internally regulated to 10v because some racers like to remove the alt & just use the battery as a power source. Preventing a problem before one is created...
These are CD igns & are not as sensitive to supply voltage as are inductive igns.people far smarter than you beg to differ because they;ve tested it and