My 1992 Legend's heat A.C. fan stopped blowing in the lower speeds a few months ago. It would only blow in the high speed position. And then, a few days ago it stopped blowing in the high position. The fuses are O.K. Should I be replacing the Heater A.C. Control panel switch or the blower motor? And how hard is it to replace the blower motor? I have ordered a manual, but I was hoping to start the repair this weekend. Thanks in advance for any help.