ORIGINAL: bob1393
Airforce7 - Have you considered not Y-harnessing your receiver batteries together and plugging them separately into your receiver? You can plug into any open channel. This gives you battery redundancy - you don't have to worry about a Y-harness failing on you. Just a thought.
Bob
Doesn't have to be an open channel - power and ground on the servo and battery port(s) on the RX are on a common bus. So, you can use a Y-harness on any channel, run the servo off one side and the battery pack on the other side. The other battery can be plugged into the Rx battery port or on any other channel using another Y-harness.
This also halves the current flowing through any single port, generally a good thing. I'd put the Y-harness on whatever channel is likely to see the highest current, as the current flow path for that servo will be through the Y-harness only. Just a thought.
Barry