... , press the button of the remote 4 times, there is two “Bi, Bi”, led flash quickly, that mean the code has ... , press the button of the first two remotes one time each, and the third remote two times to finish the learning. E ... —connect with negative of motor 1. B. C—connect with positive of motor 1. C. OV—connect with limit switch. D. M2—connect with the motor ( + & - ) E ...