First, verify the 12V battery is any good. If the scooter was discarded, there's
a strong chance it had burned out, nearly useless batteries. But if at least
o.k. (it should be able to light a car headlight bulb for at least a minute
dropping in brightness appreciably) it should easily hold up to a day of
To use the Electron Beam controller, open up the case and shunt (connect) the
positive and negative battery contact points with a short length of wire. Use
with a conductor that is at least as big as the wires coming out of the
Use solder, don't just twist them on!
Next, cut ONE wire lead about 4 feet from the controller, peel it away from the
wire, and solder battery clips on to the two fresh ends. These will connect to
Finally, replace the continuity lightbulb in your controller with an
A 470 Ohm resistor paired with a bright green LED capable of handling 30mA
ought to be about perfect and bright enough to see in bright sunlight.
Make sure you orient the LED properly so that when the red battery clip is on the
positive terminal, and black on the negative, the LED lights. LED's are
sensitive, unlike lightbulbs.
This is just one way, I'm sure there are other equally good methods.