The black pack is ontop of the Dipped head light bulbs or the actual Xenon Bulbs, the Hi Beam bulbs are standard type bulbs. The Hi Beam bulbs are a fricking pain in the arse to change, i removed the headlight and completely removed the two screws to do it. Was a bit fiddly, its clear as mud once you can sit down and change them whilst sat on the sofa lol
Had the same thing with the Xenon bulbs at the weekend i fitted 8000K bulbs, i removed the whole headlight to change them as i could not figure out how it was done. Once i done one i realised there was no need to remove the headlight at all!!