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I agree that it would be nice to be able to flash the field when needed, but my 003A does not once the engine is up to speed, and the schematic shows that the speed switch disables the flashing function. I have not had time to go trace the wiring in my 003A, but I did confirm with a meter that...

I do have an 003A. I found out about its flashing connection because I measured the voltage on the field during the startup procedure. It was clear that the initial voltage dropped out as soon as the engine was running. Both the field voltage and the generator output voltage stay steady if I...

I had assumed that the -002A was wired the same as the -003A, but it is not. The -002a schematic shows the ground return for field flashing connected directly to ground, not through the starter disconnect switch, so moving the switch to the start position when the engine is running does apply...

Ha, yes, I see what you mean. The schematics are marked so if you connected DC to the bridge that way, current would flow. But bridges like that are normally marked as to their output polarity when AC is applied.

What you said sounds correct. In the last sentence of my post above, I was talking about the "+" and "-" markings on the schematic, where it shows the 6-diode bridge assembly (A4).

MEP-003A Field Flashing, or Lack Thereof I noticed something about the field flashing circuit of my 003A. When cranking, the field is momentarily energized or "flashed" by S1, marked "Master Switch" on the control panel. 24VDC is sent to the positive side of the exciter field, and current is...