The REDARC 24 volt to 12 volt adaptor is used to connect a REDARC gauge to a vehicle with a 24 volt ignition and lighting supply. The REDARC GA-2412V must be used to connect your REDARC gauge to a vehicle with a 24-volt ignition and lighting supply. All REDARC gauges must operate from a 12-volt power supply. Firstname(Required) First Surname Last Enquiry(Required)Email(Required) PhonePhoneThis field is for validation purposes and should be left unchanged.