Ok so heres the story. I was putting in a new stereo the other day and while I was doing that the fuse for the radio popped. So I replaced that and now my climate control unit won't work. No AC no heat no defrost nothing. Any idea on what it could be? My xj is a 95

 

All fuse checked for current in and out in both boxes ?

 

Popped a fuse somewhere. Look in the passenger side fuse box and in the PDC under the hood. Probably a blown minifuse.

Next time when fiddling in the dash unplug your negative battery cable. I learned that the hard way.