Replaced almost every heater component. Cab is blistering hot now

[Mister-B]

My truck didn't even come with a heater core. Bought a new one and installed it along with all new hoses, radiator hoses, and radiator fluid, only to find that my blower motor bearings were going out, and it was making a huge racket and wasn't blowing at full speed. Then, the face to the heater control snapped off at the rivets, and I couldn't control it very well. Found a nice replacement at the junk yard for $19. Then, it was time to change the blower motor. Found a brand new one at Autozone for $21. Got that installed, and here's where the bazaar thing starts...

Turned on the blower, and it's really blowing hard. Turn it off, shut the hood, and take it for a spin. As I'm ready to back out, the heat stops blowing! I'm like WTF! I park, and look at the fuse panel. Sure enough, the fuse blew. Here's the weird part. It calls for a 25 amp fuse, but the PO installed a 10 amp fuse! No wonder it blew. And, it only lasted this long, because the old motor was almost shot and couldn't blow at full speed. I buy the correct fuse, install it, and all is well. Very hot!
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