6 pk LED Replacement Light Bulb 921/T15 Wedge base Natural White 12V092113 (6 bulbs) LED Replacement light bulbs for bulbs with 921 bases Applications include 12 Volt DC auto, marine, RV and military vehicles. RV power fluctuations can damage a regular LED light. Applications include 12 Volt DC auto, marine, RV and military vehicles. RV power fluctuations can damage a regular LED light. Low heat, safe to touch, and instantly bright Energy efficient and eco-friendly