Passenger side window problem
I have the same problem with my 87. Tried connecting the battery directly to the pasenger window motor and was able to make window go up and down. So I figured the motor and regulator were fine. Must be electrical.
Read a couple posts here and looks ike it is probably the main power switch driver side. Wierd cause the driver window works fine. Still have not pulled it out, tho I heard they are hard to fix and you have to try buying a used/new one.
HTH
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