Club car 1975-1979(?) wiring question

[madmacker]

My husband is deployed right now and I am trying to figure out the wiring on our old Club Car. I have it running in forward but can't get reverse going. For some reason it has no plate thing on it with the serial number so am guessing by battery placement and placement of other things that it is a 1975-1979 Club Car. There are 2 red wires coming from the forward/reverse switch plate in the front that I don't know where they hook to and also a black wire (area 1) that I'm not sure about. See areas labeled 1 and 2 in pics.
Thank you in advance for any help you are willing to give me.