This smacks of an electrical problem that I have experienced with my 1986. Inside 1984 to 1986 headlight motors there is a limit switch that shuts down the motors when the headlights are fully open or closed. Mine had this problem for a while intermittently, and then after a while, one would simply not run. The heart of the limit switch assembly is a reed relay inside a glass tube, and it had burned out. I imagine after 305000 miles, yours is getting close to that point as well, or had damaged contact points.
I got some used motors from ebay and used the parts to rebuild my problem motor, but now, these limit switches are available from the fiero store (www. Fierostore. Com)! To access, remove the motor, remove the little access panel, and you can change out the switch assembly. You may also have a problem with the dash switch, but since you state that you changed it out before and it made no difference, it is likely not to blame.
Tuesday, September 9th, 2008 AT 2:32 PM