I've been working on something I have talked about a couple times in the past, and finally came with a presentable product. 
To all of those that came from my 
Vehicles Topic, this function will be applied to the rest of the gang in my cars. 
 Click it; it won't hurt
Click it; it won't hurtBy default:
Numpad 4: Left Blinker
Numpad 8: Hazard Lights
Numpad 6: Right Blinker
Numpad 2: No Blinkers
You can also tap the key that you hit first a second time to turn off the blinkers.