Partsam 2Pcs 3157 4157 Amber Switchback Blue Front Turn Signal Light 60-Epistar-SMD Dual LED Dual Chip:Different from before our sale item, now all of 60 SMD LED chip bright in Amber when turn signal, When back to Parking / DRL, also all SMD Chip Bright in Blue. Blue light Parking / DRL is for Off-road or Performance Tuning ONLY. Please obey the law and have fun. Application:Front Turn Signal Light;Interchange Part Number: 3157, 3057, 3457, 3357, 4157, 3757, 4157, 4114, 4157; IMPORTANT NOTICE:If you are not sure your socket type ck or standard , please use the keyword (CK or Standard Test) on youtube ,the video will show you how to test the socket.( please check before placing an order , Our bulbs come with Standard Base(SK Type), NOT CK Type, put standard bulbs into CK type sockets , the bulb will not work or only the amber turns on while the other doesn't, also POP THE FUSE may occur.-- Most TOYOTA vehicle use CK socket. IMPORTANT NOTICE(1)Don't forget Risistors if flashingBlinking or Code error problems occurrs!!! Please buy resistors in Partsam store by searching ASIN"B01N5OQXUN" if needed(2)If you bulb does not light or occurrs blinker, please check if your relay is broken and whether your socket is senescent or not.!!!(3)For 7443 and 3157,please raise the pin when installing the bulbs if your bulb does not light or occurrs blinker 1,Blue light Parking / DRL is for Off-road or PerformanceTuning ONLY. Please obey the law and have fun. 2,Dual Chip:Different from before our sale item, now all of 60 SMD LED chip bright in Amber when turn signal, When back to Parking / DRL, also all SMD Chip Bright in Blue. IMPORTANT:Our bulbs come with Standard Base,NOT CK Type. Don&#039;t put standard bulbs into CK type sockets. It may pop the fuse or blow the bulb. Or the bulb will light up amber ONLY. Use a electroprobe to check where the two Positive Points locate in your stock socket. You can also buy a pair of standard sockets to modify the wiring. Application:Front Turn Signal Light Interchange Part Number:3157, 3057, 3457, 3357, 4157, 3757, 4157, 4114, 4157 Color: Blue /Amber(60 Amber / 60 Blue) LED Type: 60-Epistar-SMD LED Dual Chip Dimension: 51mm*18mm(Length*Width) Working Voltage: 12V High performance LED, long lifespan, superior illumination &amp; stability Environmental-friendly: energy saving, no UV and IR radiation, shock-proof and anti-corrosion Easy installation, just plug &amp; play Faster on/off response time and vibration resistant How it Works (check the gif animation): Blue light on when Parking / DRL on &#034;Amber-Off-Amber-Off&#034; when Turn Signal on Blue light on when Parking / DRL back on