I just bought my 92 nsx last week, but the passenger side window does not go down. It doesn't make any sounds from the motor or anything. Could this be a problem with the window regulator or a shorted wire? I know the regulator is a common problem among the older model nsx. I went to the Acura dealer and they said they wanted $680 for a window regulator. Does this seem like a reasonable price? Any help will be very appreciated. Thanks!