I've had problems with the ac/heater in my 98 320. I ordered and changed out the fan underneath the passenger dash, but i still dont have anything blowing into the cabin? Loose wire? Any ideas?

It happened one night driving and the radio went dead for a second and then the fan stopped working. I still get cold/hot air but barely anything I can feel. I'm hoping its a smal fix.

I'd appreciate anything you can offer.