Connects to the auxiliary winding or stator for power supply.
Independent Red (+ Positive) and White (- Negative) wires that connect to the generator's slip rings to control the magnetic field . an-5-203 avr wiring diagram pdf
| Terminal | Function | Typical Wire Color | |----------|----------|--------------------| | 1 & 2 | AC input (sensing) – 120/220V | Red / Black | | 3 & 4 | Field output (to exciter stator) | Blue / Yellow | | F1 / F2 | Shunt field (sometimes labeled S1/S2) | Orange / White | | U / V / W| Auxiliary winding input (for start‑up) | Green / Brown / Gray | Connects to the auxiliary winding or stator for power supply