Okay, I'm sure the cable snapped as it usually does .

It controls one of the two flappers in there, the other flapper is to the extreme right end of the plenums and controls fresh or recirculating air by the red/pink vacuum actuator mounted on the extreme right end of the plenum, this is usually ruptured and has zero bearing on the fan or temperature .

The little arm on the heater box end of the white plastic cable should move back and forth as you turn the fan switch .

If not, that's where your efforts need to go next .

Blower motors are indeed affordable now, I have the Uro brand one in for a couple - three years now and I rarely turn the fan off fully, it's silent and blows a gale on high .

You're getting there, don't panic, work slowly and methodically .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better