round headlight / dual headlight

I need help with choosing a headlight and how to install it.

I noticed there isnt really a thread for this either.



Ive been looking on ebay for quite a while for round headlights and I am not sure what headlights work with the electrical system of the TW200 2006 model.



I was thinking of buying a side mount headlight and those cafe style side mounts and bending them to fit the width of the light.



But I am not 100% sure what the volts should be and the watts should be. is there anything else I should be concerned about?



Im also wondering if it is possible to install dual or twin headlights like from a ruckus or a zuma BWS or buell.

I read in one post that it doesnt work out with the electrical system but there might be one set up that will work.



Thanks