Not sure what your talking about if you have quad xenons you can black out the entire housing and shrouds, it doesn't make a difference. Low beams you run both lights shutter down. High beams both lights shutters up.
I already have FX-R 3.0 3inch projectors at home, with ballasts and bulbs and wiring harness. I'm going to get another set and do the above conversion, to my halogen lights.
Edit I think i kind of see why you're saying. You're saying if the xenons are not bi xenon then I won't have brights? I will be using FX-R projectors which are bi xenons.