Since we were discussing the weight of the power window motors, I decided to go ahead and weigh one since I am gutting a few doors to auction the parts. It comes out to a little under two pounds for the motor alone.
So, the power windows are adding about 3.5 pounds total to the weight of a miata if you add the extra wiring/switches and then subtract the weight of the crank mechanism and handle. This is on a 1990 model, which should be the same through 1997. I guess I can live with that.....
Pat