Nevermind everyone.
There are actually 2 wires used for illumination in the harness on the sti and only 1 used on the harness that i will solder onto the Z1. The the wire that ISNT in the harness is the dimmer wire, the other one that is used by the harness is the illumination wire and does toggle between 0 and 12V depending on the position of the headlight switch.
so cliffnotes: subaru has 2 wires used for illumination, 1 that toggles between 0 and 12V that is the Illumination and one that has 4 voltages used for the dimmer. the Z1 WILL turn into night mode, but will NOT be able to