This is the second time this has happened. The first time I had my girlfriend's uncle jimmy-rig a system where we made a new ground and bypassed the power source because the AC/heater completely went out. It didn't even blow. Our first guess was to get a new blower motor. Yet when I installed it, we found out that that was not the solution. Nor was it fuses. So, as a result my heater/AC was always on. Never could be turned off. Shortly before the AC/Heat went out my blower intensity could only be on level 4. Not even 1-3. That is the only way I could get my AC to work for some reason, too. So that crappy system worked for awhile until a couple of days ago. Then it died again. I have checked the internal fuses, I still have yet to check the fuses under the hood with a voltmeter. We'll see...