It's been a good few years since I've been on this forum. You might remember me from such classic threads as HID/LED bulb replacement, etc.

Since my last post, I have emigrated from the UK to Germany. I rode the Forza 300 with my son on the back, from London to Munich, 2 years ago. Now I'm looking to sell it because it's sitting in the garden under a tarp, unused. I cycle everywhere in Munich because it's not a suicidal prospect, like it is on the roads of London.
Now my question: In order to make the UK spec Forza road legal in Germany, in order to be able to sell it at it's proper value, I have bought an EU spec headlight cluster (€500!!!) because the light needs to be thrown to the right hand side of the scooter, now that I'm driving on the left of the road, instead of the right. Has anyone had to replace the entire (sealed) headlight unit, before? If there are any relevant youtube videos out there, I haven't been able to find them (at least, not in English... which was the limit on my search).
Help, diagrams, photos, links etc. all very much appreciated.