【Advantage】Built-in Circuit for 12V Power Input ac control panel.Low Power Consumption and Low Temperature.Long-lasting Life - 50,000 working hours 【Easy installation】Just plug play.Faster on/off response time and vibration resistant. 【Compatible Vehicle】2003 2004 2005 2006 2007 2008 Dodge Ram 1500 2500 3500 Pickup Truck 【Application】Replace the light base,very Bright ,Use them to light up your vehicle. 【NOTE】If the LED does not light up, simply Rotating it 180 degrees (reverse the polarity)