Alwarerc Senrigan GP-55 3-Axis Brushless Gimbal (For 600 -1000 Size Multicopter) - Manual (Page 11)

Pan(Yaw): Motor A
Roll: Motor B
Pitch(Tilt) : Motor C Wiring of Motor wires. IMU cable is not
suggested to pass through the motors.
This may affect the performance of the
gimbal.
Install the main control case on the X
mount (M2x16mm Hex Cap Screw).
Make sure you can see four set pin.
(make sure same as this picture.)
11