Replaced bec. Works perfect now!

Well it arms and calibrates fine but now when push the throttle the green light will go solid then start flashing and beep it if I keep it held. But if I let go it goes back to yellow in neutral. Motor does not move.

Did you remove the red wire from the ESC when you installed the ext. BEC?
If you remove the BEC from the circuit all together, does the system work normally (after replacing the red wire)?

The red wire has been Removed. It has worked with the bec had a little wreck and car started acting up. Figired out wire from bec to reciever was not even getting a whole volt. Replaced the bec and its getting the programmed 6v. It worked then I cut esc off and put truck back together and it started doing what I mentioned last post.

Flashing green and beeping suggests you need to recalibrate the esc to the rx.