, I'm gettin' a "drift" here....
Is English your first language?
Do you have trouble with reading comprehension?
Lemme ask you this,
when you went to school, did you get there on a Long bus with 20-30 kids on it or one of those little ones with only 3-4 other kids, all of you wearing helmets?
I'm just messin' with ya, Sorry,, I don't know what the problem is with our communication, it's probably my fault for assuming your understanding of mechanical things is greater then it is
Yes, the fuse blows because of the shorted heater, unplugging it will
stop that from happening, a new fuse and the computer (PCM) will get power again and the truck will run.
Open the hood, look under that plastic trim piece in the middle, up top, at the front, that says POWERSTROKE
on it. Under there is the Filter Housing. Lean up over that and look at the back side, towards the windshield, at the back of that housing in the middle of the motor. The plug for the heater element is at the bottom of the "bowl" there.
Here's a pic.