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※We stand behind our products all the time.If you have any questions or concerns about our products, pls don’t hesitate to contact us to get support. ■INFORMATION: ●Name: T20/7440/W21W/WY21W turn signal tail side marker light bulbs. ●Colors: AMBER YELLOW. ●Voltage:DC 12V. ●Wattage :5W/Bulb. ●Ampere: 0.44A/Bulb. ●Length: 2.09in(53MM). ●Maximum Diameter: 0.79in(20MM). ●LED Chip Type: 3030SMD. ●LED Chips QTY: 27Pcs. ●Lighting Angle: 360 degree clear beam. ●Material: aviation aluminum alloy & plastic. ●Lifespan: over 30000 hours. ●Operating Environment Temperature: -40℉ ~ 176 ℉/-40℃~80℃. ■EASY INSTALLATION: ●Plug & play,no need to cut and wires,no need ballasts,fit into the same size socket perfectly and plug into the OEM sockets directly. (If there is a problem of the dashboard or hyper flash, then need load resistor to prevent it.) ■EXCELLENT HEAT DISSIPATION: ●Aluminum plate inside which has excellent heat dissipation, 10pcs holes on the body speed up the cooling rate and durable. ■NOTES: ●These Bulbs can work with most vehicles error free,but for some European vehicles equipped with CANBUS systems, may not light up or flicker when installed(it's not the quality problem),it may require to mount a decoder or Load Resistor to avoid the error code or blinking. ●Please flip the adapter and try again if it doesn't work when installed these bulbs,because some cars use negative wire for power. ●Professional installation is recommended. ●Actual lighting maybe different of the picture due to the shooting environment and angle. ●Buy with confidence, 1 Year warranty of the item and please contact us directly if have any questions,a quick replacement or a full refund is available.