no go

[ozdave]

Hi guys, well have got all my system wired up. It consists of a 9920, UBEC, and 540C 8xl in an emaxx with traxxas receiver

I have it wired according to Brians wiring diagram with 2 x 7 cell batteries in series and have pulled the jumper for using a BEC

So i've plugged it all in and nothing, not a peep out of the throttle, no beeps after removing the programming jumper, nada. The sterring servo is operational though so theres definately power in the system.

I've double checked my wiring and it all looks good and I have put a fresh charge into the bateries as well. I've also tested power is getting to the controller by checking using a test light at the battery connections on the controller

Have i missed something, or is it DOA? What can I check to work out where its gone wrong?