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the purpose of the resistor is to limit the current going through the led.. keeps circuit current low.. forward biased diodes have very little resistance and require very little current to light, without the resistor the higher current flow would burn it out .
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1976 Yamaha XS360 ( Beats Walkin')
1978 911 SC Targa ( Yamaha Support Vehicle )
2006 Audi A4 2.0T (Porsche Support Vehicle )
2014 Audi A4 2.0T Technik (Audi Support Vehicle)
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