The standard 12v incandescent bulb used in RVs draws 1.5 amp. The average, high quality, LED light draws .3 amps and outputs 2x as much light. LEDs are about 10x as efficient at producing light when used in a 12v application. There are variables and sometimes the saving and efficiency can be even higher. We have a wide array of bulb and light fixture options that can be custom tailored to fit your needs.