Satellite Advantage RV LED Light Bulb Wedge  T10,921, Warm White Color RV replacement light bulbs. Wedge bulb, 921,T10 replacements. Brightest LED chips available, Samsung 5630 chipsets. Offered in cool white 6000k, warm white 3000k and Natural white 4000k color temp Voltage range of 10v to 30v No polarity can't hook up wrong. Save power 6 of these bulbs equal one stock bulb