Signal construct msoc series 1 chip led festoon lamps acdc signal construct msoc083172 a 025w 12v ultra green led festoon lamp with dimensions of 8 x 31mm this single chip led lamp has an integrated bridge rectifier to make possible ac or dc operation low current consumption and long lifetime make it suitable for a wide range of applications signal construct msoc083172 led festoon bulb ultra green 12vacdc 025w 8x31mm