GRV T10 Wedge 921 194 30-5050 SMD LED Bulb Light Rv Car Lamp Super Bright Warm White Dc 12v Pack of 10 Super Bright High Quality Durable in use Really Long Lifetime.More than 50,000 hours of theoretical service life. Super Energy-saving 10x High Bright T10 Wedge LED Bulbs DC 12V 5050 SMD 30LEDs Warm White. Notice:DC12V LED Bulbs have + - polarity direction.If it does not light up,please reinsert the lamp 180 degrees from your first try. It Cannot use for AC Voltage or DC13V RV Camper or Above DC13v, high voltage may very hot and Burned out!