cciyu Pack of 10 31mm(1.25") 2835 12-SMD Festoon Dome Light Blue LED Bulbs De3175 De3021 De3022 3175 12v 31MM 6SMD 3528 Festoon Dome Map Interior LED Light Bulbs Lamp DE3175 DE3022 DE3021 3024 Cross Reference: Festoon 31mm-35mm:3423 3425 6411 6413 6418 6423 6461 DE3423 DE3425 C5W. Only for DC 12V Application: Interior Light, Dome light, Map light, Door light, CargoTrunk light, Glove Box light, License Plate light ect. Long-lasting Life - 50000+ working hours. Please NOTE: If the LED does not light up, simply Rotating it 180 degrees (reverse the polarity)