Once installed, the system must undergo specific bench and flight line tests: S-TEC 55x installation guide (wiring) - BeechTalk.com
: Recommended for neat and reliable shield terminations (e.g., Raychem S02-08). S-tec 55x Installation Manual
| Pin | Signal | Function | Wire Gauge | |------|----------------------|-----------------------------------|-------------| | 1 | GND (Power) | Chassis ground | 18 AWG | | 3 | +14V or +28V | Aircraft power (through CB) | 18 AWG | | 12 | NAV/GPS Valid | Input from GPS (active high) | 22 AWG | | 14 | Heading Bug CW | Potentiometer wiper | 22 AWG shielded | | 27 | Pitch Servo CW | Motor drive output | 20 AWG | | 38 | Yaw Rate (Gyro) | Analog voltage (1.5V +/- 0.2V at level) | 22 AWG shielded | Once installed, the system must undergo specific bench