I got mine from Vespa Motorsport (Scooterwest.com) in San Diego, CA. They used to sell them as a kit complete with resistor packs, shrink tubing and all the necessary connectors and other bits but no longer do, for some reason. (To be fair, though, I remember them being pretty expensive, but the stock signals had to go and these were easy to install after watching their YouTube video.)
The BMW-style rear taillight they still sell has also been added, along with their HID headlight kit. I've removed the hideous US-required front mudguard reflectors and plugged the holes since these photos were taken.
Rear angled, LED running light and LED brake light:
From the front (sort of) in the shade, running light and HID headlight. This was before the two-up Sport seat and Asian-market grab rail were added:
In the shade, signal flashing:
Rear running lights in my closed garage; brake light on with brake lever squeezed:
From the rear, signal flashing with no pressure on the brake lever:
I hope this helps give you an idea what they'll look like under different riding conditions. The stock running lights were pretty terrible, visibility-wise.