Oh, and it turns out, if I push my left stalk to high beam switch, but the headlights are off, nothing happens. If I pull the left stalk to flash to pass spring switch, with headlights off, the H4 halogens flare.
If the headlights are ON, then high beam and F2P have essentially the same operation, either lock the H4's on, or flare them.
What this MEANS, is I probably need another wire in parallel... no, no, I do not. 35W is 35W. Oh boy. So I already should have all the wiring I need to control this stuff, which is fantastic. I'd need one additional wire to bridge the high beam switch to the bixenon solenoid.