Oh, I got my Remzibi wired up to the camera and VTx. It was much easier than all the instructions I've been reading were making it out to be. I used the ends from two servo extensions. Since you're trying to get two three wire servo extensions connected to a single four wire connector on the Remzibi you connect the black wire from each servo ext. to the black Remzibi wire, and both red's to the red Remzibi wire. Then the white wire from one of the servo extensions to the White Remzibi wire and the other white servo wire to the yellow Rembizi wire.
For a single battery configuration, you don't need to use the voltage sensing or RSSI wires.