#### loquin

##### Well-Known Member

you can pull about 3 WATTS from the white wire. any more than that & your bike won't run. The voltage is more than 6 volts, though. Voltage doubling does NOT increase the total amount of power available, because as the voltage doubles, the current is cut in half. But, since no transformer is perfect, the total power is actually reduced a bit, due to losses.

Power (in watts) = Current (in amps) times Voltage (in volts)

*or*P = IE

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