The beacon motor / Mars lamp is solenoid # 27. If you run the solenoid test you should hear the motor click or try to turn when energized.
Correct bulb for the mars light is # 1156 / 12V
Test values on the triac board - Not sure if the door interlock needs to be closed to energize.......
J1-1 = 24 VDC
J1-4 = GROUND
J2-1= 48 VAC
J2-5= 48 VAC
J3-1=48 VAC
J3-4=48 VAC