If you're talking about the P1/P2 start buttons, they flash because of pulses from the board. There's nothing special about the LEDs
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Are they LEDS or incandescent lamps bulbs? for the Major Havoc Roller lamp
If i use a 12 volt bulb into a 5 volt pulsating circuit, the 12 volt bulb won't flash why is that?
If I use a 5 volt bulb into the 5 volt pulsating circuit, the 5 volt bulb won't flash either
Is the Major Havoc Roller pulsating circuit, pulsating at +5 or +10 volts unregulated?