I need an electric vacuum pump for my brake booster in my '53 F100. I can buy an F350 SD Electric Vacuum Pump at a reasonable price. Much cheaper than Hot Rod pumps. I have a couple of questions about these pumps.

What are the two ports? Is one an Inlet, and the other an outlet?

What is the function of the two hoses from the ports to the body of the pump?

Does this pump switch itself On and Off, or does an external controller do that?

Where can I get a pigtail connector for this pump?

 

moved to the model year forums for your truck. I think they can probably help you source what you want.