Peter made a comprehensive video guide on his Bullet install.... he went to the trouble of fabbing small alloy blocks to get the lights in just the right position.
Many thanks.
http://vespaadventures.ca/2012/09/16/finally-bullet-light-installed/ (http://vespaadventures.ca/2012/09/16/finally-bullet-light-installed/)
(https://www.bikevis.com/images/gallery/vespa_gtv300/gtv300.jpg)
Here is a update from Peter showing the Bullets running at night.
In the flesh they look brighter, but the camera lets less light in when 'seeing' the headlight. The modulation also won't show due to shutter speed conflicts.
http://vespaadventures.ca/2012/09/17/bullets-at-dusk-and-night/ (http://vespaadventures.ca/2012/09/17/bullets-at-dusk-and-night/)