The T2W automotive bulb is a miniature wedge base bulb that is commonly used as a replacement for parking lights, license plate lights, and dashboard lights. This bulb utilizes halogen technology and has a single filament. It is not used in projector or reflector headlights. The nominal power of this bulb is 12 volts and 2 watts. The lifespan of this bulb is typically around 2 years. The name T2W means that the bulb has a wedge-type base and is 2 watts. This bulb uses a P13.5s base. It produces around 20 lumens and has a color temperature of around 2700K. This bulb is interchangeable with other wedge base bulbs such as the W2.1x9.5d and W2.1x5.1d.