Hi ,i have a spare vacuum line hanging down from heater valve under car ed falcon on left hand side of engine bay,any ideas anybody where it belongs or have a diagram of such,i have the car manual but doesnt show much, help please the garage guy connected up a very thin black hard plastic to it but now i have no air con going to the dash photo attached if any help ,looks like small hard plastic line goes into the middle hole is that right graham how do i get a photo upload

I think that connects right at the back of the intake manifold. probably just fell out.

Hi Guys found the problem with rough idle was a buggered exhaust box ,replace and alls well,regarding the heater valve lose hose,a green line had come apart,how i found it ,like this went to ford with 3 questions 1 spare hoist 2 parts page to chech on and a 3 old hand mechanic he just looked and said theres your problem reconnected the vac line and hey alls well thanks guys