Side light bulbs for every make and model of vehicle, blue bulbs, 12v side lights and LED bulbs all available. Side lights are the small, white, relatively dim lights located on the front nearside and offside corners of the car. However, modern cars often have their sidelights integrated into the main headlight unit. They are useful for extra visibility of your vehicle in poor weather, or when parked on a busy road. When a car's sidelights are turned on the nearside and offside rear tail lights and number plate lights are also illuminated.