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2013 Optima/K5 LX (Spicy Red)
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Got these from iBrightstar on Amazon. These easily replace the amber turn signal bulb for the 2013 Optima/K5, but you will also need to acquire and install a resistor for each turn signal to eliminate the hyperflash effect that results from switching to LED bulbs. A great YouTube video by SparkSmith titled "What is Hyperflash and how to fix it" does a good job of explaining the hyperflash issue and contrasts three different resistors. Ultimately the best one recommended is only about $15, of which you will need two. The better one does not get as hot as the others. Splice the resistors into the turn signal wires and your flashers will function as normal.
 

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