kz650 turn signals

for some reason my my turn signals turn on, but they don't blink. any suggestions?

you can check your turn signal relay under your sidecover and see if that's the problem.
You can get a new at an autoparts store for under $10.

If all 4 bulbs come on, 2 at a time, then it's most likely the turn signal relay. Try cleaning the wire connections to the relay. If a bulb is burnt out, the other wont flash.
Could also be the strength of your battery, or the engine may need to be running to generate more power.