[guilty]

Tony: the stock headlights are a dual-filament bulb setup, so when the highbeams are turned on, the low beams turn off.. So basically you want to prevent it from doing this since the mach HID lights have a seperate high/low bulb setup.

The instructions are here: http://www.ofoc.ca/hid/step05.html

I still havent gotten around to doing this yet, since I rarely use my highbeams (I dont do much highway driving, if any).