These 3156 miniature replacement light bulbs provide a dependable lighting solution for a wide range of truck and automotive applications. Designed with a standard wedge base for quick installation, each bulb operates on 12 volt power with a 2.1 amp rating to deliver consistent illumination and reliable performance. Multiple color options allow you to customize marker, interior, or accessory lighting to match your style while maintaining proper visibility on the road. Ideal for replacing worn or dim bulbs, these versatile incandescent bulbs fit most common 3156 sockets and are a simple way to restore brightness and enhance the look of your lighting setup.