A friend of mine was attempting to install a system in my girlfriends car, and after putting the center council back in place, we realised that the a/c button no longer did anything. The light would not come on when we pressed it, and we tested it anyways and the a/c deffinately wont come on. But air still blows outa the vents, and it will still get hot. We reopened it and rechecked everything, checked the fuse boxes, but theres no obvious reason why it isnt working. Does anybody have any ideas?