If you can follow me.. i took a 3 light fixture and it had 3 wires coming out of the back. At walmart i got a little plug looking thing but 3 prong, like the white one above, and it unscrewed in half. So inside it had 3 screws and you unscrew one and the hole gets bigger and then place the wire in and screw it tight. Do that for all three and plug in to socket.
Or go ghetto(my fan) cut an old extension cord and strip the wires and then twist the 3 wires to the corresponding wires and it should work.
sorry for the confusion hope i can help