2X NOVSIGHT H4 LED Headlight Bulb Conversion Kit High Low Beam 6500K Super White
Light Colour: 6500K White. Light type:H4 HB2 9003. Q4: Will this bulb give error code or tend to flicker，or neither side lighting up, or work inconsistantly?. 2 x LED headlight bulbs. 2004 Ford F-150, high/low beam.