Owen, I'm looking right at IH's diagram of a cutout relay, the one with three terminals, BAT, GEN and F. You've described the wiring for a cutout to a tee, but if that third terminal on what you are calling the cutout relay really does say L and not F, then it sounds more like one of those three-pole regulators. The only regulation on a cutout relay is in the H/L selection on the four-position switch. Maybe John T or Bob M or somebody can jump in here and bail me out, cause I'm beginning to think that maybe the three-pole regulator (I've never seen one to get my hands on it to test it to see how it works) will work with the four-position switch, just giving you two layers of regulation. But I'm still wondering where the wire from the field post on the genny would go in the setup you describe.
In IH's diagram for the cutout relay, the GEN terminal on the cutout is connected directly to the armature post on the generator. The BAT terminal on the cutout runs back to the same terminal on the ammeter that is connected to the fused terminal on the lights side of the four-position switch. As for the F terminal on the cutout, it should always have a wire that runs back to the resistor in the switch that selects high or low charging rates. From there, you have the option of connecting the wire from the field post on the generator to either the F terminal on the cutout (which gives you the selection of high or low charging rates through the switch) or grounding the loose end to the generator frame for a constant, non-adjustable, high rate of charge.
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