Dual intensity amber LEDs provide a bright solid amber running light and full contrast amber turn signal flash. Each Genesis 4 front turn signal has a black circuit board with 48 dual intensity amber LEDs and 1157 pigtail bulb base. Replacement for OEM front turn signal bulbs on Harley Davidson motorcycles with bullet turn signal housing. Must be installed with ProBEAM bullet turn signal lenses (sold separately). Plug and play. BCM compliant.