When opened, ground relay GR will not operate. 113 Tube Resis. More field excitation for traction motor blower generator A2 when using dynamic braking. Permits bright headlight operation. 5.6 ohms 113 Tube Rests.
Permits dim headlight operation.
Resistance in series with backup 11.5 ohms 114 Capacitor Stabilizes field of amplidyne in motoring. 150 mfd 115 Capacitor Stabilizes field of amplidyne in braking. 500 mid 116 Tube Rests. Compensates for resistance change in field due to temperature. Control resistor in X1 reactor circuit.