Originally Posted by MICROACES
However the constant beep usually means the ESC isnt receiving a throttle signal so might be an idea to check all connections and also inspect the signal cable (white) on the ESC.
Let me know your findings!
Ahah! Sorry Jon!
Yes, I was plugging the white cable into the "open" connector shown on the AR6400 manual. (see picture below)
If I had spent a little more time looking at the picture I would have seen that the config for brushless is reversed...this is also borne out by your explicit diagram at step 34 of the P51 manual.
Just shows, you can cater for fools but not bl00dy fools!
I must remember to review my late-night problems the following day before revealing my stupidity on-line.