Custom Autosound NGVB-HC Voltage Booster, 6V to 12V

Voltage booster that operates 12-volt negative-ground accessories from 6- or 8-volt negative-ground electrical systems. In a 6-volt system it continuously supplies more than 3-1/2 amps with the engine off and about 5 amps at fast idle. Not recommended for power door locks, trunk release solenoids, A/C clutches, fans, blowers, power windows or other electromechanical devices.