I've recently bought a non-DCC 125 from an eBayer seller and am having trouble getting it to work. The powered engine seems to be dead, i've opened it up and one of the brown wires is connected to the motor but the connector at the other end isn't connected to anything. The wire which i'm referring to is the one to the right of the blue wire which is at the bottom of the motor. Any ideas where it's supposed to go? Btw, my set is the Hornby mixed goods DCC set. Thanks in advance for any help.