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Hello Everyone,
I have the most basic question ever but i need some help. Im making a costume for my son and need a single 12v white Led. I have the Led but do not know how to wire it correctly. Do i need a resistor is my question and if so which one. I know how to add a switch and all of that but cant figure out the resistor part. also can i use a 9 v and the led just be dim?
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