Vacuum tubing schematic

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DusterDaddy

sledgehammer mechanic
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Can anyone tell me if a 74 Duster with AC have the same vacuum tube layout as the 73?
All I have access to is the 73 Dodge shop manual. Here is a copy of the schematic from the 73 Dodge manual.

1973_Dodge_Chassis_Service_Manual.jpg
 
So here is my vacuum harness. The previous owner cut the tubing at the firewall and removed all engine bay components. Schematic says the black tubing is engine vacuum.

1. What does the vacuum reservoir look like on a 74?
2. The green tracer tubing that passes thru the firewall goes to what? The water valve actuator? I assume this is under the hood?

firewall.jpg
harness.jpg
 
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