so I installed new led blinkers and when I go to turn the left blinker on it flashes extremely fast (bc it thinks the bulb is out) BUT! when I flick the right blinker on THEN flick the right blinker it works fine, I don't understand why it's doing this. I don't know if it's an easy fix or if I should just go buy a resistor... let me know, thanks!

 

If you replace your stock flasher with something like the one below they will all flash at the normal rate. I have one of these on my bike, which has regular bulbs in the front and LEDs in the rear.

LF1-S-FLAT Universal Motorcycle Electronic Flasher

 

yes.. changing the flasher relay is much easier than the resister install..