ORIGINAL: QUEER
I have swapped the wires to the advised positions,but had no luck.
In complete frustration i have tried all combinations of wiring positions
If you have reversed the positive and negative leads of a servo with a centerpin positive plug and installed it in a Rx intended for a servo with a centerpin positive - or - If you have reversed the positive and negative leads of a servo with a #3 pin positve and installed it in a Rx intended for a servo with a #3 pin posittive -- its very likely you have damaged either the Rx or the servo likely both.
Buy the way Box those 'bumpy bits' (three splines) on the plug indicate it is an old style Airtonics plug intended to be #3 pin positive only. If the Rx port you are pluging it into does not have slots for those three bumpy bits then that Rx is to be used with servos using only a center pin positve plug.
John