Electrical help needed!

Do you have a factory manual? If not go to MyMopar and download one. Photos of what you have and think you don't have would help. In other words, just exactly what is connected and what is not? There isn't much to a heat only harness, it should hook to the heater control, and to the heater motor, and the resistor (on the heater), I don't remember an in-between harness

Do you have some mystery unconnected connectors?