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Old 03-28-2014, 07:19 PM
DudeZXT DudeZXT is offline
Motorized Bicycle Elite Member
Join Date: Jun 2010
Location: Lexington, KY
Posts: 115
Default Re: Light powered by engine

I have a 3 AAA cell LED flashlight grounded to the frame and (+) wired to the white. While idling, the light is dim & flickering, but definitely visible. As I accelerate, the light gets brighter with the engine speed and seems to get as bright as it ever did with batteries.

Simple to do, but I don't know that I would ever wire a lesser powered light to it - LED is perfect because it's polarized and doesn't allow harmful polarity to pass. I attempted to connect an identical LED flashlight as a tail-light, but it caused neither light to function, so I guess they must have grounded one another out or reduced voltage to not function - the engine never missed a lick, either way.
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