ibrightstar newest 9-30v super bright low power 3157 4157 3057 3156 led bulbs with projector replacement for back up reverse lights and tail brake parking lights, xenon white ibrightstar <b>this bulb is compatible for both ck/srck and standard socket, non-polarity design. best value in the market!</b><br> <br> <b>features</b><br> dual brightness: the dim mode is tail lights or drl, while the bright mode is brake/turn signal lights or back up reverse lights. the bulb run in bright mode when your bulb only function in one mode.<br> high brightness led: 54smd 3014 chipsets & 3smd 3030 chipsets.<br> working voltage: 9-30v (fit 12v, 24v vehicles).<br> output wattage: 3.8w/bulb (low power consumption).<br> color: xenon white 6000k.<br> waterproof: ip65.<br> service life: up to 30,000 hours.<br> <br> <b>note:</b> load resistor or flash relay might be needed to prevent the hyper flash when replacement for turn signal lights.<br> <br> <b>important notice!</b> please confirm the bulb base before placing an order.<br> <br> <b>ibrightstar is a registered brand with amazon. please contact us if there is any questions or other requests!</b>