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demon452

1964 buick riviera heater vacuum conection questuon?

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New here so wanted to say hello first to all. 

My question is on the bottom side of the heater/ac controls there is a plastic piece with 2 connections for hoses. Pic is enclosed. Where do they connect to? I have a manual and there is no info. I found the info for every other vacuum lines besides these 2. Any help is greatly appreciated.

 

20180414_054023.jpg

 

 

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Ok so I noticed in my manual that the large 1 has a tee into the 4 post vacuum.block and it shows the smaller port going to the firewall. It was under the 4700 series vacuum diagram. I cannot find anymore info anywhere. Please help.

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Encountered the same problem. See the topic  I started.  Or did you already found out where the connections go.  Where does it say in the 64 manual that the large one T's into the 4 post?? Did I mis that one??

 

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That was my error. I have the large hose reduced down and teed into the main vacuum source (black)  #3, and # 1. Everything works correctly.. 

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