The rear lock on the tail gate will not work with the central locking, I have removed the lock assembly from the vehicle and works fine on the bench.There is no power to operate the lock.I,have checked the wires between the tailgate and the body and they seem fine although I haven't taken the roof lining down.Is there a relay that operates the tailgate or do the feeds come from a module controller? If so does any one know where it is. Any feedback would help