Oracle Lighting V5238-001 ORACLE 9004 - VSeries LED Headlight Bulb Conversion Kit. Looking for a bright, versatile, and easy to install LED Headlight Conversion Option? The new ORACLE Lighting V-Series packs a ton a features to make it not only user-friendly but also an amazing value with the all-new design technology. Latest LED Technology- The V-Series bulbs feature fcCSP Flip-Chip Scale LED Packaging. The advantages ofÊflip-chip technology are multiple: it provides enhanced electrical performance over standard wirebond technology, allows for a smaller form factor due to increased routing density, and eliminates wire-bond loops. What does this mean for you? An ultra-luminous and extremely efficient light output with superior durability and reliability. Latest Bulb Design- This new all-in-one diecast body design mimics the look of the original factory halogen bulb. This allows for easy installation without any additional wiring or external drivers. The die-cast design also provides increased thermal conductivity and heat dissipation to insure long bulb life. DRL Compatibility- V-Series LED bulbs offer even more compatibility by working with vehicles that use the headlight bulb for the DRL function at a reduced voltage. The class-leading 6-32V ultra-wide range voltage protection will allow these LED bulbs to be used in Daytime Running Light Applications without common flicker issues. The V-Series bulb will dim to 50% brightness in DRL mode just like the factory halogen bulb. SmartDriveª Active Thermal Regulation- Until now LED Headlight bulbs have relied on passive thermal management systems such as large heat sinks, metal ribbons, or loud cooling fans. These methods can be unreliable and almost always make the installation process more difficult and time consuming for the installer.ÊORACLE LightingÕs new V-Series bulbs feature our SmartDriveª Active Thermal Regulation (ATR) temperature management. The integrated constant current linear LED driver inside the bulb uses a system called Òthermal foldbackÓ to protect the LEDs and the bulb components. The LED driver operates from a 6V to 24V input and offers constant current output at up to 1 Amp. If the bulb becomes hot and surpasses optimal working temperature, the driver can reduce the current by altering the PWM duty cycle until temperature stabilizes. Supplementing passive thermal management with active techniques such as this allow for a very small bulb package without risking damage to the LED or creating an environment where the LED lifetime would otherwise be significantly shortened.ÊAlthough reducing the current reduces luminosity, the current reduction is minimal and such that the change in luminosity is below the threshold that a consumer can detect. Fortunately, the human eye is poor at detecting luminosity changes in high-brightness devices so there is reasonable flexibility in the balance between controlling temperature and noticeably compromising luminosity.