The Revolution series from Starlights, Inc. is one of a kind. This bulb is as bright as many incandescent bulbs, but at less than half the cost of comparable LED products. The Revolution 194 is more than 12x more efficient than the bulb it replaces. After years of research, we have finally solved the LED puzzle, bringing consumers a bright, energy efficient, long lasting LED bulb at a reasonable cost. Can be used as a side marker light, instrument cluster light, dome light, license plate and more. . . 3 year manufacturer's warranty. Replaces 158, 161, 168, 192, 193, 194, 658, 901, 904, 906, 912, 915, 916, 917, 918, 920, 921, 922, 923, 3652. Note: In some vehicles this bulb is not for use as a blinker/indicator light, unless a resistor is added. Please refer to our Revolution Load Resistor packaging, or our website for more details.