NOTES:Please note that S1 series bulbs are without CANBUS-Ready.Advantage:Smallest and Perfect light pattenQuestion & AnswerQ: What should i do if headlight bulbs don’t work after installation?A:The headlight bulbs are polarity sensitive ,please flip the plug 180 degree (reverse polarity ) to see if they can light up .Q:What should i do if the light flicker or your vehicle …