Partsam 1Pair 3157 3156 3155 4157 Switchback LED Bulbs Front Turn Signal Light Dual Color Blue Amber/Yellow 60-Epistar-SMD Chip Led Turn Signal Light Fits for Cadillac Chevrolet Avalanche Chevrolet Camaro Chevrolet Corvette Dodge Journey Caliber Dodge Challenger Ford Lincoln GMC Mitsubishi. Please check your vehicles owners manual or the original bulb to confirm the bulb size before placing an order. Fits for Cadillac Chevrolet Avalanche Chevrolet Camaro Chevrolet Corvette Dodge Journey Caliber Dodge Challenger Ford Lincoln GMC Mitsubishi. Please check your vehicles owners manual or the original bulb to confirm the bulb size before placing an order. Socket CK or StandardIf 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, NOT CK Type, put standard bulbs into CK type sockets, the bulb will work improperly and may POP THE FUSE.-- Most TOYOTA vehicle use CK socket. Read before Purchase: This blue bulb may be illegal in some countries and only for off-road use, please check your local laws and regulations before Purchasing.(2)Please make sure your car circuit is working well before installation, as the bulbs will be burn may occur if there is a current spike or volte leak in your vehicle after the new bulb installed, it is not the issue of Partsam product quality. Notes: (1)Don't forget Resistors if flashingBlinking or Code error problems occurrs. (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 occurs blinker. <span class="a-text-bold">Partsam</span>is one of the largest automotive aftermarket LED lights providers in North America. Customers speak highly of our LED SMD/Cree/Epistar lights thanks to our continuous efforts. In the past years, we were devoted to improving our marker quality, expanding our marker types, adopting the latest technology, delivering the best LED lights for our customers and making them enjoy the best ever shopping experience. Partsam offers an extensive line of high quality lights for car, truck, trailer, boat, bus, lorry, van, caravan, camper, RV, etc. You can find all the position lights and accessories you need in Partsam!