'74 stingray vacuum hoses.
Thread Starter
2nd Gear
Joined: May 2013
Posts: 2
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'74 stingray vacuum hoses.
I have a problem. with having two lines with no hook up. the lines to the console are color coded, and there are six lines. the problem is, there are only four ports to attach to. green being the OSA diaphragm, blue is defrost, tan is a/c. Red is de-ice, which leaves the pink, heater and a black supply. blowing compressed air through the black supply line, air comes out of the headlight switch. where is the pink heater line and black supply line, supposed to attach? I do not have any other lines, running under the console, or any other places, I can see, to hook to. any help would be much appreciated. Thanks!
Thread Starter
2nd Gear
Joined: May 2013
Posts: 2
Likes: 0
Thank you for the schematic. This is where it's confusing for me. I have four vacuum ports, and six lines. I'm not positive, if a prior owner had modified the system. I'm not sure if I can add a tee, and tie them together. If so, which ones? Would you have a schematic for a '75? Again, I appreciate your help.
Le Mans Master
Joined: Aug 2006
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From: mount holly NC
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2019 C3 of Year Finalist (appearance mods)
The first vacuum hose originates from the intake manifold (just behind the carburetor)
then the filter then the check valve, (in the picture that is the line going up and down).
that comes to the "T" connection.
The right hose feeds the rest of the headlight system.
The small hose "T"s to the heater control- on the AIM drawing the small line is named
"To Vac Supply Source".
Schematic:
http://www.vetteprojects.com/bmv/mis...tte%201975.pdf
then the filter then the check valve, (in the picture that is the line going up and down).
that comes to the "T" connection.
The right hose feeds the rest of the headlight system.
The small hose "T"s to the heater control- on the AIM drawing the small line is named
"To Vac Supply Source".
Schematic:
http://www.vetteprojects.com/bmv/mis...tte%201975.pdf
