How would I go about identifying unmarked leads on a 9 lead motor ? I also need to establish wheather this is wires delta or Y.
You would need to measure the continuity of each winding with a digital multimeter or similar device. Doing a quick google search found this schematic. It should become fairly obvious whether it is in star or delta once you start taking the measurements as there can only be a certain pattern of readings - providing the windings are in sound condition.