[lincpimp]

Your second list is correct.

All of the orange/white wires are signal, brown/black wires are ground, and red wires go in the center for 12v power.

If you servo is working correctly then you have it plugged in correctly, as the signal wires are closest to the center of the receiver case, and the black/brown wires are closest to the outside of the case.

Hope that makes sense.

Not sure what happened to the ubec, what brand is it?