Classic/Antique Car Repair: 1951 fuel/vacuum pump question, vacuum section, chevy fleetline

Question
So I bought a new fuel pump with an auxiliary vacuum pump for my 1951 chevy fleetline. I'm needing the extra vacuum for my windshield wipers. I have installed it and its pumping the fuel but there is no vacuum at all. How does the vacuum section of the pump need to be set up or why would it not be making any vacuum at all?
Thanks. Tim

Answer
Ok, here is what to do. Start the engine up with all of the vacuuum lines on the fuel pump disconnected.  Hold your finger over one of the connections on the vacuum side of the fuel pump and feel for either pressure or vacuum. If it is vacuum that is the one for the wipers and if it is pressure that goes to the intake manifold/carburetor. There must be vacuum from the engine applied for the system to work correctly. If there is neither vacuum nor pressure then you have a defective pump/
Brad