Product: Pro Chaser DC-DC Golf Carts RVs 48V 36V Volt Voltage to 12V Step Down Voltage Reducer Regulator for Headlights Taillights Solar Panels Radios (25A 300W)
Brand: Pro Chaser
Input voltage: 36V 48V(36V - 48V) rated voltage Output Voltage: 12V Working Current: 25 amp Working Power: 300 watt  Please note the power converter works with any battery packs of working voltage ranging from 36 volt to 48 volt but not higher or lower. The input voltage is preset from manufacture and it is non-adjustable.  The Key Switch wire (thin red wire) is to be connected to the key switch behind the dash. If you don't have a lock switch, merge the two red wire together and connect both to positive input end. Measurements: 19.1cm*8.8cm*4.8cm 7.52’’*3.5’’*1.9''  
Specifically designed for Golf Carts & RVs with 36V (six 6V battery set) or 48V (six 8V battery set) battery pack.
Converts for head-lights, tail-lights, radios, solar panels and etc.
Harness (matched male &female connector) and fitted butt connectors included for easy connect/disconnect application.
Laser print on the surface. Easy ventilation design with aluminum cast shell. Completely sealed water resistant case.
Please follow the last picture in the photo gallery for installatiion instruction.

Search query: 12 to 48 volt conversion
Relevance: Exact