Glad I finally found this post. I flew last night and it was very hard to be sure that in fact the radio was on. I was only able to find a blue 3.7v led at radio shack. But installed it on top so it verifies that in fact the radio is on !
Next I want to put one near the top right toggles witch to come on when the motor is shut off. Just have to find a red 3.7v led to do it with.