71 Duster alternator help

Hey guys, I have a problem. I found that my battery is not charging on my Duster. It has a 318. It has what appears to be a new reman Alt. I am going to have it tested tomarrow, but I found an issue with the wiring. There are two posts on the back with two nuts that two wire are attached. Then there are two male end connectors, but only one wire is going to it, the one that is between the two posts. The other male end is more towards the top of the alt. I looked at the harness, and there are no other wires to plug in. Is this the wrong alternator? The wires do not look like they have been molested. Any pics would help. Not sure what to do. Any help would be appreciated.