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JustXtreme (author) 7 years ago
 Hello All, 
Thank you for your responses, i used a 100 ohm 1/4 watt resistor. 
i'm using a 12v battery. 
It all seems to be working so far.
Thank You & Go Instructables!
Kinda sounds like a good cartoon superhero group. 
lemonie7 years ago
We're writing a FAQ for questions like this. Please look at this page and see if it answers the question
www.instructables.com/id/EG07LH2G4PBSPE2/step2/Questions-on-the-subject-of-LEDs-and-resistors/

L