Alternator went bad in my 2011 kia sorento sx . Put in a brand new alternator and battery and now the headlights , Marker lights and interior lights have a slight flicker. I have cleaned and checked all ground wires and battery terminals even though the battery is brand new . The voltage all comes out good when vehicle is running and when vehicle is off. Have had alternator and battery tested at 3 different locations and they all say the battery and alternator are good . Any suggestions on what could be causing this problem? . Thanks.
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