[rrritchey]

Hi,
First, I am not sure why you are surprised the TurboReg runs off either battery. The TurboReg has protection on the input so if one battery goes bad it will run off the good battery. You can short one input without affecting the other input. The outputs on the TurboReg are tied together inside. There is only one regulator in the TurboReg with two outputs. Both outputs will be hot when either battery is on because they are tied together. There are two things about your setup that you may want to think about. First, the way you have this wired the power of both receivers (hot wire and ground wire) is common. This can be bad because noise from one receiver can travel over the wires and affect the other receiver. This can cause loss of range in some instances. Second, you have reduced your redundancy since you are relying on a single regulator for your whole plane. I have not lost a TurboReg but there is always a first time. If it goes you loose all your systems.