Unfortantly, Forien cars we dont have an awnser for yet but were working on one.We have a module we developed for the demo hummer for ascendent audio for sema07 . We boost the voltage up to 15.5v to give fuller charge to after market high performance batteries like kinetic, optima,ect... Our hummer has duel alts. running @ 16.2volts charging 13-kinetic 2400's with 20,000watts to audio.My power to the amps is stronger and stays above 14.5 when demoing.Currently Steve meade recieved one he is running all 4 alternators from a single module his battery light is gone and he never drops below 14.7 he loves it.Stock or high current alternators will work on our unit.Fixes newer GM computer warning lights.Also usefull for off road wenches and lights.Our site missinglinkaudio.com ( Thanks Mark from SSA for previewing our product.