[tomvid]

I have come across this in other vehicles but not on my Jeep. In my other vehicle I had somewhat of the same problem. It would only work on the two last high settings. Turned out to be the blower motor switch. It is a little switch, kind of like a curcuit board that has five on board leads on it. The five meaning the five different blower settings. Three of the leads on the board were wore out causing only the non worn leads to work with the blower. I have had to replace this twice on the same vehicle. Again, not sure if it will be the same with the Wrangle but it is worth a look.