These bulbs will fit in most of cars with no wire cutting or trimming at all. You just need to remove the old bulbs and install these in their place. Super bright light and the bulbs even have built-in fans for heat reduction car lighting design reflection surface change the direction of propagation of light principle can make the light which the photo source sends out after transmitting the type after reflection on-demand direction spread such reflective cups, better play the role of effective use light type.