Those are cheap old school bullet turn signal lights. You can usually find them at bike shops or Ebay for about $8 with either red or amber lenses. The visors I added and the mounts I made out of stainless plate and polished. I think you can order the lights from V Twin or Drag Specialties too but not sure. I have a custom HD shop not far from me that has anything and everything you could imagine, He is still selling custom parts he bought in bulk in the 60s he also has a museum. Bills Custom Cycles in the shop and Bills Old Bike Barn is the museum.

I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!