I have recent part exchanged my FZS600 for a 2007 BMW F800 ST. The BMW is a lovely bike, but has had a fair few things go wrong with it already, so stay subscribed for lots of posts on how to fix various things on it!
This is a post on how to install projector headlights. I am a big fan of Xenon headlights, but hate blinding people with xenon bulbs with halogen optics. To get around this, the best way to install projector optics inside the halogen housing.
First was to buy the projectors. I always source mine from from ebay china sellers, but some people like to pay extra for well regarded optics, in which case, I can reccomend the morimoto projectors.
Next is to split the housing, insert the projector insert and sort the wiring. This is all covered in the older posts.
I also swapped out the sidelight bulb with an led bulb. I wired my HID ballasts through the original sockets, to keep bulb warnings from showing. I also used a high/low projector with a solenoid inside, giving me 2 bulbs worth of brightness at high beam.