I have a '69 with factory air and the vacuum just under the choke on my Qjet goes to the air cleaner AC hookup (not sure what the official name is but it's on the bottom side of the intake snout) It looks like I have one AC vacuum that comes off my manifold...they go to the vacuum divert switch and then back from there to control the heater valve and the external air vents.
Hope that helps you,
Ken
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'69 Chevy, 4X4-SB 350 TBI-TH350 Trans-205 Transfer Case-Dana 44 Front-14 Bolt Rear-Front Disc Brakes-Factory A/C-P/S
Ken's '69 Page
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