How to make an LED bulb or strip into a dual intensity motorcycle brake/tail light

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How to convert a single use LED strip or bulb into a dual intensity brake/tail light for custom motorcycles for under one dollar.. My friend Pat who studied electrical engineering gave me this circuit and it works perfectly. I got my parts from Sayal electronics,but Radio shack,The source etc. should stock them parts required 2x.. .IN4004 or IN4005 rectifier diodes 1x... 12v 1 watt 500-600 Ohm resistor