dunesie

Does anybody have an '87 or '88 assembly manual that shows the climate control vacuum diagram? I am paticularily interested in the vacuum that runs the diverter valve. I am adding a diverter valve to my '86 ('86 did not have a diverter valve from the factory as far as I can find) so I need to see from where in the climate control system the diverter valve vacuum comes. I suspect '86 has the appropriate port in the vacuum connector at the back of the climate control panel and is just plugged, but I want to see the diagram so I know for what I am looking when I stick my head up under the dash.

Thanks,