It's all a bit vague I'm afraid; it's been a while, so this is a few idle rememberances.
Low beams: they had a separate driver and the hardest bit was putting the unit somewhere tidily where it wouldn't rattle about. They required converter rings that allowed them to fit in an H7 holder - possibly they were D2S fitment. I think the driver had flying spade connectors that I just pushed into the loom connector (I presume I wrapped them in tape.)
The high beams were stand alone units. From the fact that I've still got another set of converter rings kicking about, I presume they were direct H7 fitment and I think they plugged straight into the loom.
I don't think I resorted to taking a wheel off for access but I'm a glutton for contorting myself into small spaces!