Custom Dynamics Amber/White LED Turn Signal Inserts (GEN-4-AW-1157) Custom Dynamics Genesis 4 LED Turn Signals offer 48 super bright dual color LEDs producing the brightest full white running light (Halo Free) with full amber turn signal on the market. 1157 pigtail bulb base for plug and play front turn signal applications. As required by Federal Motor Vehicle Safety Standard FMVSS108, when turn signal is activated the white DRL turns completely off providing greater visibility to the amber turn signal. Sold as a Pair in Bullet Style for Harley-Davidson models with pop-off style turn signal lenses with tabs (Replaces OEM# 68168-89a).