Took another look at the wire diagram and noticed no switch wire to 7amp ignition box when using a booster. So i wired the booster with a switch wire and the ignition box without. It worked and work really nice. 16.75v at the coil now. Only thing i can figure is that the negative coil wire must feed the current to the ignition box to turn it on. Go figure. Ignition box turns on without the switch wire hooked so no voltage drops any where. Cool!