Yes, there does seem to be a shortage of info in this area.
The X650v comes with a battery harness with 5 outlets, 4 of which hook up to the ESC's, but no hint of what to do with the 5th. After smoking the receiver, I clearly need some guidance on how to wire this thing correctly.
The 5th plug is an auxillary output from the 11.1v Main Flight battery, CAN be used for any LOW Amp Device like: LED Lighting, External Camera which runs on 12v or a 12v Video TX for FPV ETC. If you need any further assistance feel free to contact me via PM here !! THANKS Jeffery.
Hope you enjoy your XAircraft Product we are working on more user friendly and complete Emglish instructions.
It is difficult to SMOKE an RX with this setup. Other critical information is part of the radio owners manual and is explained in the owners manual of your RX/TX, This is out of the control of XAircraft. All TX/RX systems wire differently. You could have put 11.1 battery power directly into your RX. The RX generally will take Approximately 6v and is powered from the BEC's off the ESC provided with the kit. X450, X450 Pro, X650v-4 and X650v-8 also power is provided from the ESC-A4 provided with X650G and C models.
Here is COMPLETE wiring diagram of the X650V-4, X650V-8 ... MUST be sure the Grounding lead of all RX and ESC/BEC leads face the outside edge of the FC1212-S and is drawn on the FC-1212 and also outlined completely on the drawing from the Manual.