Does anyone have a pin diagram for the 4pin connector plug on the alternator?

I've got my suspicions that if I short one of the wires to either ground or positive it *should* bring on the battery light.

Attached are pictures of the actual plug I'm working with

From left to right I think is...
ECU (white/black) - ECU (white) - B+ (red) - battery light and ignition switch (red/black)

Not much that I've found online seems to correlate to what I'm seeing here

Help? Ha ha

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