So its just V & L (I believe if you can see the winkers work you dont need a dash light thats just car and modern thinking)
My front winkers face forward, and prior to fitting an idiot warning light, I have been known to ride for literally miles with a winker going, I considered that to be dangerous, so I did something about it, if I really looked hard I could just about see the winker reflecting off my 8" headlamp rim, but it was not visible enough to act as a warning device, especially not on a bright day.