Diode Dynamics DD0012P HP24 Cool White BulbsUpgrade. Add dual color functionality and a modern appearance to your front turn signals with the 1157 HP24. Populated with sixteen amber chips and eight white chips, this bulb lights up white when your headlights are turned on, and flashes amber when the turn signals are activated. Housed in an aluminum casing for maximum heatsinking properties, the HP24 will last for years to come. Best of all, installation only takes minutes simply take out your