Common DC brush motor lead characteristics: two power lines or two power lines and a speed measuring line; most of the two power lines are red and black; after the positive and negative poles of the power supply are exchanged, the motor will reverse.

　　DC brush servo motor lead characteristics: two power lines and four or five encoder signal lines.

　　DC brushless motor lead characteristics: three power lines, most of which are yellow, green and blue.

　　DC brushless motor lead characteristics: three power lines and five Hall signal lines, the power line is usually thicker than the signal line, most of the power lines are yellow green blue, and most of the hall lines are red yellow green blue black.

　　DC brushless servo motor lead characteristics: three power lines and four or five encoder signal lines.