I have a Toyota Supra 86 (2.8 L). My windows and sunroof will not operate. The problem started out not working every now and then but got progressively worse. Eventually the windows and sunroof stopped working. I assume it had to be a common element like a switch and I tried swapping out switches but to no avail. I swapped out the switch in the driver side compartment. After looking at the schematics, I believe its the “Main Power Relay”; however, I do not see where it is located. In the PDF, I found on the internet, I only found a “main relay” under the hood but I don’t think that is it. Could any one tell me where is this main relay is and your opinion of the problem? Thanks in advance.
PDF
http://pdftown.net/1/1986%20Toyota%20Supra%20MK2.zip
Switches location page 556
Power Main Relay page 825