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resistors or decoders

  1. Load resistors/decoders

    2010-13 Mazdaspeed 3 Appearance & Interior
    I've found some decoders (instead of splicing into existing wiring): http://item.mobileweb.ebay.com/viewitem?itemId=171086971737 Not these specifically, but that sort of thing. My question: Do I need a 6 ohm resistor for each bulb (I'm running all 4 turn signals as LEDs) Or just a pair?
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