It could be the blower motor or the control head either one. The best way to test the motor since you have power there is remove the connector going to the motor and take a jumper wire and hook up the power wire from the harness to the motor then ground the other wire with another jumper wire from the motor to a spot on the dash. If the motor runs it needs a control head. If it doesn't run replace the motor.
Not sure on the price of the motor but the repair takes about an hour if it is the blower motor.
Here is some information on the blower motor;
I'm not certain, I understand the "TEST" procedure that you describe...The wire harness plug from the motor to the resistor pack/module on my car, is made up of (1) green colored wire, and (1) black colored wire....I'm assuming the "black" wire is "ground"...and the "green" is "HOT"
*** I should un-plug the motor harness from the resistor pack/module..
*** Then take a jumper wire and re-connect from the "HOT" output "pin" of the resistor pack/module, to the green motor harness wire...
*** and take another jumper and connect it from the "GROUND" output "pin" of the resistor pack/module, to a metal spot on the dash..
Is this correct ???
I'm "afraid" to ask you...what is the "CONTROL HEAD", where is it ?? and if it's the control head, am I opening up another can of worms ????
******another follow-up question...this is about the screws...
I believe I can see the one (1) (( FROM THE TOP)) screw....but I can only see three(3)
of the (( FROM THE BOTTOM)) screws that you describe.....
If the (4th) is where I think it is..(behind the housing)...how in world can I get to it ???
The test is what you described and the control head is the controls where you change the speed and temperature.
The one is hard to get to due to the location. a long screw driver helps