Today my blinkers starting blinking fast as hell. All of them front and back are working, they are just now blinking at warp speed.
I recall on these old cars of the day there being some type of blinker relay??

 

If it's flashing very fast it is usually a bulb burned out ,but if they are all flashing,try replacing with a heavy duty Flasher (probably under $5.00). Larry

 

they have been working fine for a year till today. All bulbs blink front and back left and right.