sparx/pma/headlight help

i'm running a sparx and pma and it seems to idle fine around 1200 but as soon as i flip on the headlight the bike dies. i noticed when i put a vom on it i wasn't getting 13.2v at idle and if i gave it gas the voltage would come up but i could get it to go past 14.5 and even up into 16v! is this...