My friend just purchased her first vintage machine...a Universal Japanese clone. Serial #Z77218 Can someone give a date? She plugged it in last night and sparks flew!! She asked me to look at it. Bare wires coming out of the motor and then black tape to the plug in end to the machine case, about 8 inches long. I've never done any motor rewiring. Is there a tutorial for this, or do I need a more experienced person to work on it? Any help would be deeply appreciated!