OK Dave - I'm here. Just got back from Yorkshire.
Many of the HID kits are, as you say, dip beam only so I suppose it would be possible to connect up the wrong way round and have main beam only apparently. I say apparently because the damn things are so bright they shoot light miles down the road, even on dip. Also, I guess that the main/dip switch will have no obvious effect if one of these types is fitted.
The kit you have had fitted 911addict will have been advertised as a high/low or main/dip if it is that type, and most are not. If yours didn't say this, then its dip beam only.
The height adjustment should still work as normal and I can see no reason for it not to. How much did the kit cost? Mine was £260 including 10% discount and they don't get a lot cheaper than this yet. If yours was much less, again, I would suspect dip beam only.
What you do need to do is get the alignment sorted out as it is quite different with these bulbs and, seemingly, harder to get right too. Although mine was a straight swap and it passed its MOT the next day with the old settings, I felt that there was a massive discrepancy between the sides which needed adjusting out - in effect, I had a very bright patch 30 feet in front ot the offside of the car and this was very distracting. Also, they were a touch too high, although again different, and you really could pick up fluorescent markings at huge distances, and this might be why you think you only have main beam.
My lights are now too low and aimed too far to the left (done by an MOT tester although not for a test) and it really does show so I think I will spend a few minutes sorting them out again.
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