Hi,
As has been widely discussed in these forums, the standard 8xAA battery holder is not a preferred option for use with the Turnigy 9x TX.
I'm planning on using a JST connector to replace the 3 pin connector that the battery holder uses and was after some guideance as to how to best connect this to the TX.
The options as i see it are:
1. Simply take the red/black cable that by default is connected to the side of the Tx case (bayonet socket), unsolder it from the bayonet socket and assuming that it's wired up correctly (polarity) then i'd just put a JST connector on the end of this and poke it back through into the battery compartment.
2. If anyone was to suggest a reason as to why this cable should be left attached to the TX case, then i'd run a new set of wire from the backside of the PCB as shown in the pics below.
For either option i wanted to check if anyone could confirm the correct polarity of the cables coming out to the bayonet socket on the side of the Tx case. I've included the pics of inside the Tx case where i'm working. My multimeter suggests the polarities are as shown in the picture but i was interested if anyone could confirm the expected pin voltages.
Thanks
Peter