How's it going all, been a while. Car has been running fine, but an issue has come up I never dealt with before.
At first the heat would not come on till the motor warmed up. I didn't try the defroster, so I don't know if it was working. The blower would come on later and later, and now does not come on at all. The fuse is fine, so where would be the next place to look? Do these 124's have a thermostat that would control the power to the blower? Any ideas before I pull the dash apart? Thanks

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1990 300D 2.5
1991 F350 7.3 Dually IDI

1997 F350 gasser dump
1980 H-D 93 inch Shovel
2000 SE Roadglide