I thought that the wipers worked off intake manifold vacuum. Now I'm learning that the "vacuum"section of the fuel pump has something to do with this too. I have also heard that some people have gone to civilian fuel pumps without losing much in the wiper function. Can someone please explain to me how this wiper system/fuel pump actually works? If I did go civilian on the fuel pump will I lose all wiper function? Some people say the vacuum wiper system was so poor to begin with anyway there wasn't much difference with or without the military fuel pump. Thanks, Lenny