ive done leds before and you need a 12v dc rectifier , and you need a led load simulator wired inline with the leds. Your LEDS use a fraction of the power a standard filament bulb uses , and thats great BUT it can't handle the sloppy voltage that is supplied to it by the Blaster's Stator and less than stellar rectifier it uses. You can run your headlight power to a seperate dc 12v rectifier . Then a LED Load Resistor needs to be wired in ( keep it away from your plastics because they get hotter than a MOFO). the load resistors job is to only allow the 3-5 watts that your LEDS need to run , the resistor absorbs voltage spikes so you don't toast your bulbs . and your lights wont pulse with the changes in engine rpm .
Look for a 12v dc rectifier that produces a high quality , stable current . The ones that are recomended for operating/charging electronics from a 12v source .
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