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So I set up and follow the instructions to do the Garage Opener. When I got through all the steps I wanted to test it and make sure it was getting the power when pushing the button. So before hooking it up to the Garage Opener I attached a small LED light to the wires and it appears that the LED is ALWAYS dimly lit/on. When the button is pushed, the LED gets brighter. Should I be concerned that the Pi is always pushing out some power?