Check the listing for details. Runtz 12-Volt to 6-Volt Voltage Reducer, Set of 4. Condition: New. Listed at 113.99 USD. 12V to 6V Voltage Converter – Allows original 6-volt electric gauges and devices to operate correctly in vehicles that have been converted from a 6-volt system to a 12-volt electrical system., Designed for Electric Gauges – Each unit supports one 6-volt electric gauge, making it ideal for maintaining proper operating voltage when upgrading classic vehicles to 12-volt systems., Transistorized Circuit Design – “Runtz” transistorized circuitry provides stable power conversion and helps protect sensitive gauge electronics from damaging startup surges., Electrical Specifications – Features screw-type terminals with 1.5-ohm resistance, 4-amp maximum load capacity, and a 25-watt rating for dependable performance., Universal Fit Design – Compact unit measures 1.70" overall length and 0.55" width a.