wiring

[dfitz9256]

I have a 1988 Starcraft Galaxy, during a recent trip the connector (7 pin) that goes to the tow vehicle came loose and was torn off the harness. When I went to replace it I realized that from the trailer there are 8 wires but only 7 on the connector. There are 2 black wires in the trailer harness one is 12 ga and goes to the 25 amp converter and one is 14 ga and connects to the green wire that goes to the frig. This is according to the schematic that is part of the owners manual. anyone have advice on what goes where?