Kaizen 2Pcs Hi-Power 7443 20W CREE Parking Light(DRL Daytime Running Lights)/Front Turn Signal Lights Bulbs (Blinker Corner) Dual Color Switchback LED Color White/Amber(Yellow) + 50w Load Resistors This switchback LED bulb is powered by 4 pieces CREE LED emitter plus a special designed reflector mirror (aka diffusion mirror) in front of the LED. This mirror will project the light directly to the stock lamp's reflector, then comes out much brighter. Clearer signal - The white DRL light is very bright.The turn signal flashes "amber-off-amber-off," instead of "amber-white-amber-white," which makes it easier to see. Super Bright - Both the white and the amber are super bright.TWICE brighter than other switchback LED bulbs on the market because of this new design!4 High Power Cree SMD Chips on each LED bulb two for Amber and two for White colors!Special IC built-in for delay AO (Amber-OFF) function! Easy installation - All of our LED bulbs are designed for easy DIY installation & direct replacement. If LED bulb doesn't light up after installation, please simply re-insert it oppositely (because LED bulb has polarity like a battery). Note -- Just be sure to test them before you mount them back where they are supposed to be.The bulb only work for standard socket.If you are not sure your socket type ck or standard, please use the keyword (CK or Standard Test) on youtube ,the video will teach you how to test the socket.( please check before you place the order ).DO NOT FIT 7443CK/SRCK type socket.