Posted in For C Bodies Only 1969 new yorker vacuum diagram tinnman75 September 7, 2017 Does anyone have a diagram of the vacuum hoses that are under hood for the HVAC system. I have 3 vacuum hoses that have been cut coming out near the heater hoses. 2, 1/8 inch and 1, 1/4 inch. Just want to know where they hook up to. Author: tinnman75