Originally Posted by Jack Diaz

Dave, both receivers are receiving and sending 24 channels to the CB via EXBus.
On Device Explorer you define which of the 24 channels correspond to each servo output of the CB.
Also, on Device Explorer you define which of the 24 channels can be outputted thru the servo outputs of RX3 (or whichever receiver you use).

And yes. If the receiver where you have 16 and 17 connected dies, those channels are lost ( use them for wipers and horn )