Changed my heater core. Still no heat. Dang

[Mister-B]

Just bought a '69 c20 v8 without AC. The heater core was disconnected, and the hose was looped back. So, I bought a new heater core and hoses. It was really a ***** to install. Had to drop the fender, and of course two of the bolts were rusted on the back side and wouldn't budge, so I had to cut them off. There were a ton of leaves plugged in the firewall and inside the core housing, so I got those out. One thing that was frustrating, is that there's a metal non electrical wire with a loop on the end that goes over a post on top of a door that opens and closes when heater switch in the cab moved right or left. I just don't see how it will stay put. There's nothing to hold it in place.

Anyway, got everything connected and fired up the truck and turned on the heater. Nothing blows out at all. I'm guessing a wire is bad or the blower motor is bad.

Any other ideas?
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