The general family is the same, that is, several lines of the motor, the largest resistance of the two lines is the capacitor line, the two lines of the capacitor and the two lines are connected on the line, if there is no multimeter or will not be used, then look at the motor wire, generally speaking, black and yellow lines are capacitive lines.
The capacitor is connected in parallel between the two joints with the largest resistance, and the other joint (common end) is connected to one end of the power supply;
Then use a multimeter to measure the resistance between the common end and the connector at both ends of the capacitor, and the end with a slightly larger resistance value is connected to the other end of the power supply, which is positive rotation;
If you need to reverse, change the line connected to one end of the capacitor to the other end of the capacitor.