Question about the replacement of the cabin heat/air fan and the regulator. I just followed the directions on the DIY link for the removal of the fan and it was pretty straight forward. My fan is farily free spinning (for a 1990e) so I'm wondering if its the regulator as mentioned in the DIY link. Can I put 12 volts right to the motor without damaging it? Also would like to know what the device is on top of the firewall above the master cylinder that the regulator connects to. But if I read the post right I should be able to tell if its the regulator by just disconnecting the wires at the point above the Master cylinder and electricallly starting the fan...wish I had read that first...sounds like the regulator is a real bummer to get at.