Did I blow it? I plugged my Naza-M V2 LED into the Main Controller EXD. port and the EXD cable into the LED port, and then continued to apply power. I have scene connected it correctly , but now I get a continuous rapid flashing yellow light. New to this so I an definitely learning.

rapid flashing yellow light means you have a transmitter signal loss and it has gone ito failsafe mode. Connect the Naza M into your PC and run the assistant program to set it up first, see what you get after you have configured the Naza