Post the part number for the plug. If I had it I would have given it to you. I got mine from a ford mechanic, said they were real common and had one in his junk box. It does have a + and - right on the pump so you don't wire wrong.
Sounds right about feeling hot, the water is running right down the middle of the pump. So did your feel a big difference?
Found this one on ebay but couldn't tell if it's the same one I used
http://cgi.ebay.com/ebaymotors/Injec...=1218691500769