TYC 18-5894-01-1 Mercury Grand Marquis Front Left Replacement Side Marker Light OE-comparable harness (no pigtail connector) for hassle-free installation OE-comparable mounting provisions ensure drop-in precise fitment Rigorous and accelerated cycling tests to ensure product service quality and durability Special coating on the lens surface prevents hazing and fading ensuring proper illumination and operational safety Meet or exceed DOT/SAE standards with particular consideration for photometric and safety compliance