What is the difference between a 194 and 921 bulb?

Answer 1

The main difference between a 194 and a 921 bulb lies in their size and brightness. The 194 bulb is smaller and typically provides around 2-3 watts of light output, making it suitable for applications like dashboard lights and interior lighting. In contrast, the 921 bulb is larger and offers a higher wattage, usually around 12-18 watts, which makes it more suitable for applications requiring brighter lighting, such as reverse lights or backup lights. Additionally, the 921 bulb generally has a higher lumens output than the 194.