Universal fit, comes with 3 adapters that fit the following bulb size.
194 / 168 / 2825 Wedge Bulb
DE3175 / DE3022 / 1.25 inch / 31mm long festoon type
DE3425 / 6411 / 6418 / 1.50 inch / 36mm long festoon type
560 / 578 / 211-2 / 212-2 / 214-2 / 1.72 inch / 42mm long festoon type
It will fit in just about every dome light housing that has enough room to mount this panel. However, it is the customer's responsibility to double check the size of the map or dome light housing to ensure there is enough space for the LED panel to fit.
LED stands for "Light-emitting-diode", it is a semiconductor device with two terminals, typically it only allows current to flow in one direction, therefore they are polarity specific. Unlike incandescent bulbs that are used on most vehicles, LED's do not have a filament that produces both heat and light, instead it has electrons that flow to create photons, which generate very low heat. LED's use much less energy to create an increased amount of brightness compared to incandescent lights, and last longer.
LED's are polarity specific, if it does not turn on after install, please reverse the polarity by turning the bulb around.