TWIN-SPINS

http://www.livorsi.com/pdf/GIFP,GIFP...IWP,GIWP15.pdf anybody know where cigarette installs the sending unit for the fuek pressure gage,,,i see there is a fuel pressure sending unit on the fuel rail,,but i think that one is for the 555 computer,and it also has three wire going to it,,or does livorsi tie into that sending unit using only tow wires,like on the livorsi diagram ??? this is on a 525 efi engine