Green LongLife 5050146 LED Replacement Light Bulb with 7443/T20 Wedge base 230 Lumens 12v Natural White 100,000 hours life expectancy 11-18 volts DC including 12v; this voltage range is designed to withstand RV power fluctuations LED Replacement light bulb for bulbs with 7443/T20 Wedge base Low heat, safe to touch, and instantly bright Energy efficient and eco-friendly