Headlight Switch

[b1k3rdude]

Every bulb that gives light from the same place will have the same beam pattern when use in a given reflector, no matter how the light itself is generated.

yes and no, because a HID bulb is that much brighter parts of the beam pattern that would have illuminated with next to no light via a halogen bulb will now been lit. This is what causes the scatter and subsequent blinding of oncoming motorists.

But going back to your post, my above statement is mute because no HID bulb I have even seen or used has the arc in the exactly the right location for either lo or hi beam. fitting HIDs to a H4 bulb based bike is counter productive and not recommended. Only bikes with fixed bulbs, eg H1/H7 or projector benefit from HID (albeit with some scatter as mentioned above)

For the fazer LED spots are the way to go.