In cutting the hanging cable back to fit the height of our ceiling we have been left with 3 wires and have no idea which wire coming from the light is live, neutral, and earth as they are all the same colour. Every other light fitting we have purchased has colour coded wiring ??? Also it does not hang straight and leans to one side, moving the arms slightly causes it to lean in another direction, we are at our witts end with this, any help anyone can offer would be really appreciated