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1: Turn the key switch to the
off position and remove the key from the scooter.
2: Disconnect the 'power' connector from the battery pack.
3: Disconnect the 'motor' connector from the motor and replace with the
large white connector on the SPD-24250 speed controller with the white and blue
wires.
4: Disconnect the 'speed control' connector and replace with the
'derailleur' connector on the SPD-24250 speed controller.
5: Disconnect the 'key switch' connector and replace with the 'power
locks' connector on the SPD-24250 speed controller.
6: Disconnect the 'charge' connector and replace with the 'charge'
connector on the SPD-24250 speed controller.
7: Disconnect the 'brake' connector and replace with the 'brake' connector
on the SPD-24250 speed controller.
8: (*Optional) Disconnect the 'back lamp' connector. Cut the 'back lamp connector off
of the old speed controller leaving as much wire attached to the connector as
possible. Cut the 'brake light' connector off of the SPD-24250 speed controller
and splice the 'back lamp' connector from the old controller onto the new
controller. Splice the black wire to the black wire, and the red wire to the
green wire. Connect the 'back lamp' connectors together.
9: (*Optional) Disconnect the small black connectors with red and blue wires. Cut the
small black connector off of the old speed controller leaving as much wire
attached as possible. Cut the unmarked small white connector with the red and black
wires off of the SPD-24250 speed controller and splice the small black connector from
the old controller onto the new controller. Splice the red wire to the red wire
and the black wire to the blue wire. Connect the small black connectors
together.
10: Connect the 'power' connector from the battery pack to
the large white connector on the SPD-24250 speed controller with the
red and black wires.
*These connections are optional and they are not necessary for the speed controller to operate the motor.
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