you need to replace your flasher relay with an LED flasher relay. Available everywhere online...I spent a few bucks more and bought one from TST industries that was an exact fit and plug and play. Here's a pic of mine, it's the gray little box to the left of my hand. It will require removing the seat and plastics around there.
I just bought some resistors in the right range and soldered them into each turn signal circuit. Super cheap and works. Probably like $5 in resistors and some know how will work. Also widely done, and instructions available online.