Except by program card , the motor rotation of Aerostar series ESC can also be changed by the added throttle channel as followed steps : 1 , Connect the 3P signal cable with the Channel of throttle. 2 , Connect the 2P signal cable with the Channel of reverse switch . 3 , Power the ESC ,hear “Beep” from motor . 4 , Confirming the reverse switch is off . 5 , Confirming the motor can start normally and pull the throttle to ZERO position. 6 , Turn on the reverse switch.