This is a normal indication when locomotive is not energized. If light does not go out when locomotive is energized, report failure. This is a normal indication when locomotive is not energized. If light does not go out when locomotive is energized, report failure. These lights can be seen through small windows on compartment doors.
Continuous flashing indicates proper firing of rectifier tubes.
A gap in the rhythm or continuous light, indicates a misfire. Inspection of these lights shall be made a intervals by the engine crew. Report this condition for correction. Refer to Fig. 10 for location and identification of misfire lights.