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Old 06-13-2020, 09:19 PM
67428HO 67428HO is offline
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Default 1968 Firebird Hvac Vacuum switch

Hi , looking at the top of the vacuum switch attached to the controls, what port is the source vacuum go to the left side of the right? Does it matter? Thanks!

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  #2  
Old 06-13-2020, 10:22 PM
JimFB400HO JimFB400HO is offline
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Maybe this diagram will help:
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  #3  
Old 06-15-2020, 05:02 PM
67428HO 67428HO is offline
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Thanks Jim!

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  #4  
Old 06-15-2020, 07:04 PM
JimFB400HO JimFB400HO is offline
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If you would like a clearer scan of that diagram, please send a PM with your email. I can rescan and send a .pdf of that page from the '68 Pontiac Diagnosis Manual.

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