After replacing the switch on the dash and the blower fan I still could not get the fan to work. If the jeep was moving I had a small amount of heat coming in that was it. Then I remembered everything worked fine until I put a new stereo in. So I take out the stereo and directly behind it is a green wire that was unplugged. Looks almost exactly like the one that is hooked to the drivers side door that turns the interior light on and off when you open and close the door. I plug the wire back up and presto, the fan starts blowing. So after all that work, it was just a simple wire. Hopefully this post will save someone else from the headache and waste of money.