No. It doesn't.
I haven't been able to find one for a 6v system.
I have done a bit more research and I am missing one bulb from my system (the speedometre bulb - my speedo doesn't have one where there should be). Apparently the 6v - .6w bulb is important to the balance in the system.
Anyone have any suggestion how I might add something like this to the system?
Here is a .pdf of the wiring system for my vespa.
LINK