Partsam 42mm Festoon LED Light Bulbs LED Interior Lights Map Dome Lights Bulbs 211-2 578 569 Festoon LED Bulb - Blue (4 Pcs) Package Contains: 4pcs Blue 42mm Festoon LED Bulbs Fit for Car Interior Dome Map Trunk Cargo LED Lights Part Number: 3423 3425 6413 6429 6451 562 564 570 571 577 578 211-2 212-2 214-2 SMD: 12pcs Super Bright 3528 SMD For purchasing right light, please do measure your old ones' length before purchasing or contact with us.(Don't Fit 2010 F-150 Vehicle) Partsam all started in the summer of 2013 with a simple, with bold idea: makebetter auto parts. In other words, not just a better auto parts - a better way of doing things. A new kind of auto company that works hand in hand with users to do something amazing, something meaningful.Now PARTSam has grown tremendously to become one of the leading platforms of e-Commerce in the aftermarket auto parts industry. Inventory Management/Warehouse &amp; Fulfillment  With our warehouse located in Milpitas, California, we take care of the inventory management for our products. This saves manufacturers space, time, and headache. Automated Multi-Channel Sales  We successfully advertise our products on multiple platforms and maintain top-rated healthy seller accounts, which keep customers drawn to our products. We arecontinually expanding our customer base as we add more sales channels. Professional Seller-Customers will deal directly with us in regards to issues and concerns they experience with the products. Manufacturers will not have to deal directly with the individualcustomers, but will experience the benefits of their business, which is the typical win-win cooperation. Light Color: Blue Base:42mm (fit for 40mm~44mm) Input: 12V Number of SMD: 12-3528-SMD Package Content: 4 x 42mm Festoon LED Light Bulbs Faster response time,No incandescent delay Exterior usage: License plate lights, tail lights Interior usage: Map lights, dome lights, cargo lights, courtesy lights Made with bright light bead,Stable light body structure, not easy to damage or disintegration 578, 211-2, 212-2, 214-2,569, 211, 211-2, 212, 212-2, 214-2, 569, 578, 6413, 6429, 12844, DE4410 If the LED does not light up, simply rotating it 180 degrees (reverse the polarity) Fits the car models, please see compatibility chart; We recommend that you measure the length of your old bulb to make sure it&#039;s replaced with the correct LED bulb.