To program an ESC, first fully charge the battery. Connect the battery pack and turn on the transmitter. Keep the throttle neutral and hold the set button. You’ll see the light flash green, then red. After the red light blinks one time, push the trigger to full throttle and hold it. The light will blink red twice when it registers this action. Finally, push the trigger to reverse and hold it. The light will blink green one time. This alert signals that you’ve programmed the ESC on the car.