NOS Mopar Adjustable Voltage Regulator 1961 Thru 1969 Models #2444980Voltage Regulator: This is a NOS voltage regulator for the years and models listed below. This part is the adjustable type that can be used to adjust the amount of voltage available to your charging system. Often with Chrysler products the headlights will dim, and the blower motor will lose speed at idle. This unit allows you to set your voltage to avoid this problem. This is an original NOS Mopar part. Years 1961; 1962; 1963; 1964; 1965; 1966; 1967;