Vacuum hose, another dumb question

[ideologist]

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!

 

[halifaxhops]

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

 

[ideologist]

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

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

 

[cbarge]

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

 

[70bigblockdodge]

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

 

[detmatt]

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

That’s not just an Imperial thing?

 

[70bigblockdodge]

That’s not just an Imperial thing?

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

 

[halifaxhops]

LOL I am more of a A body guy!

 

[notsosan]

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.

 

[ideologist]

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.

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