blower won't stop
Could anyone help please, (it has been suggested that the problem may be the blower regulator).

If I remember correctly, the leads feeding voltage to the regulator were hot even when the blower was off, and maybe even while the car was off. If the regulator is faulty it won't be able to send the correct voltage to the blower, and in your case it sounds like it's just staying "hot."
I bought the regulator from autohausAZ and the blower from FCP groton.



