Overview This is a pair of inline resistors, designed for use with 194, 168, or 921 size bulb applications, such as license plate and cargo lights. Each resistor draws 5 watts of power, the same as a standard 194 bulb. By drawing this extra power, it can resolve bulb out warnings that occur in some vehicles due to lower power consumption of LED bulb replacements. Please note: the base connectors are universal, and will not be an exact fit in your vehicle. The bulb holder side is a flexible rubber that is designed to fit loosely in a variety of sockets. If you wish, you can cut off the connectors and wire these resistors inline, on your existing license plate bulb circuit. (Wiring and electrical experience required).