Need some help with GWS Naro Rx
on the end one they are simply bent 90 degrees, it is marked on the bottom which is which, simply follow it round, IF negitive is inboard for your face up, then its the top for face out.
cant tell you which pis are which coz i cant get to mine, but you can plug in servos the wrong way with no damage, just turn it round if it dont work.