I'm not sure if this is true for the Z (since I don't have the original headlight wiring harness nor bi-xenon projectors in mine), but in most modern cars turning on the high beam shuts off the power to the low beam (dual filament bulbs use only one filament at a time). Thereby you will not be able to run the ballast off the low beam power source and then use the high beam switch to activate the solenoid, as it wont do you much good to trip the solenoid and have the light itself go out. Other than that it looks good, just make sure you seal it up well in the back, you don't want water getting to those wires that carry 20,000 volts.