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Ships within 1-2 business daysThe DENALI H4 Anti-Flicker Adapter was specially designed to accompany the M5 & M7 DOT LED Headlight Modules to eliminate flickering caused by PWM dimming signals used in many CAN bus systems. The adapter is for use with vehicles originally equipped with H4 headlight bulb size. The adapter simply plugs inline between the M5 or M7 Headlight and the vehicles factory H4 headlight connector.