Vacuum hose, another dumb question

Early C Bodies - The Slab Side Years

  1. ideologist

    ideologist Member

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    Where does this little black hose go inside the ca? It is hooked up to the two-pronged vacuum fitting on the intake manifold. Larger hose goes to a brake booster? Not sure where the little one goes, I can't follow it without dismantling most of the dash apparently

    Thanks for any guidance!

    20200830_025812.jpg
     
  2. halifaxhops

    halifaxhops Senior Member FCBO Gold Member

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    By chance you have a factory Vacuum gauge? Never seen them on the drivers side usually the pass side for heating/ac controls.
     
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  3. ideologist

    ideologist Member

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    I don't! I bought one to install, and was going to T off of whatever this is.

    My car is a factory bench seat with a column shifter, was going to find a way to mount it upside down under the dash because I thought it was nifty
     
  4. cbarge

    cbarge World Famous Barge in a Budget FCBO Gold Member

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    Vacuum feed for push button heater controls.
    The majority of slabs do have this hose going through firewall as shown in posted pic.
    Hope this helps
     
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  5. 70bigblockdodge

    70bigblockdodge Old Man with a Hat FCBO Gold Member

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    Is it for parking brake release when you take it out of park?
    Or heater controls sice they are drivers side center.
     
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  6. detmatt

    detmatt Old Man with a Hat FCBO Gold Member

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    That’s not just an Imperial thing?
     
  7. 70bigblockdodge

    70bigblockdodge Old Man with a Hat FCBO Gold Member

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    He did not say what kind of car then I looked at thread topic.
     
  8. halifaxhops

    halifaxhops Senior Member FCBO Gold Member

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    LOL I am more of a A body guy!
     
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  9. notsosan

    notsosan New Member

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    Could be for a trunk release. Does your trunk latch have a little vacuum diaphragm and is there a button in your glove box? My 66 300 has one.
     
  10. ideologist

    ideologist Member

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    I don't have the trunk release button. Based on where it goes through the firewall, it's probably the heater controls. I never fathomed those buttons used vacuum