Tech Info >> L.E.D. Lighting Technology > Light Emitting Diode (LED): A semiconductor crystal chip which, when activated by a relatively low electrical current, emits extremely precise wavelengths of light with efficiency and precision that conventional lighting cannot match. LED components are encased in a durable, high-strength, optical grade epoxy. LEDs are highly efficient and typically consume about 1/10 power consumption and are expected to last up to 50 times longer than a traditional incandescent bulb. LEDs are solid state and illuminate approximately 200 milliseconds faster than a incandescent bulb. This allows motorists to react quicker to changing traffic conditions. Because the light output from LEDs is pure and direct, it is not as easily diffused by other interfering light sources such as sunlight, reflections or glare.     Aftermarket LED "Retrofit" Bulbs: Aftermarket LED replacement bulbs are typically manufactured in Taiwan/China/Korea. A handful of LEDs are mounted into a base designed to replace your typical parking, signal, or brake lamp bulb. Problem is, manufacturers do not take into account that LEDs create light much differently than your typical halogen bulb. These are flawed products, hence the reason we call them: TOYS. Check out these great features! - Limited amount of LEDs plus narrow viewing angle results in significant loss in light output and visibility. - Low manufacturing cost typically involves using inferior quality LEDs that are over-driven and will pre-maturely fail over time, not to mention lackluster lighting performance. - Every automotive lamp has specific light characteristics, therefor there is no such thing as "plug-and-play" LED retrofit bulbs.