Engine bay wire harness electrical connections.

Most connectors fall into place. Most all only connect to one component. Example of "some confusion." The single wire that attaches to the brake warning lamp switch down on the brake prop valve. But it has a stud push on connector. Not very many of them in the car. The other single wire is for the washer pump. But it has a single flat spade/ flag connector. So you won't mix those two up.

One thing you can do for now is to go download the 73 manual at MyMopar. The wiring will not be quite correct, but on past the wiring diagrams, are charts of the connectors. These show the shape of the connector, and approximate location. Many of those will be the same on your car