Rapid flashing turn signals , both sides front and back

On my 72, it's way over on the right side just behind the lower edge of the dash and held by a clip.

It's easy enough to turn the key "on" position, and then turn your blinker on to be able to listen for the sound off the flasher.  It will either be on the fuse box under the dash, or possibly under the radio area.  Good luck.  

Apparently it is fixed. Should have made a new post instead of updating the OP.