Need to find a vaccum digram for 1980 F-150

Hi, I would donate money I dont have any right now I am a single to be mother I have no vechile and I am due in a month. I really need help, I need to know whre to find a diagram for a 1980 Ford F150. It has no vaccum lines or anything so I was told I have to have a vaccum lines and vaccum digram to help figure out how the vaccum lines are suppose to be. "If you know how they should be or could tell me where to find a digram that would be greatly appreciated.?