cciyu 42mm 214-2 212-2 569 6413 LED Bulbs Epistar Light Lamp Replacement fit for Interior Dome Light,4x Super White Application: for 2002 2003 2004 2005 2006 2007 2008 2009 Chevy Trailblazer Dome Light Cross Reference: Festoon 40mm-44mm: 211,211-2,212,212-2,214-2,569,578,6413,6429,12844,DE4410. Only for DC 12V Long Sevice Life :50000 working hours.Faster on/off response time and vibration resistant LED Type: 42mm Festoon 12-2835-SMD Chips LED Light Bulbs;Voltage: 12V Please NOTE: If the LED does not light up, simply Rotating it 180 degrees (reverse the polarity)