Ah the Water in Fuel light has come on and want go off, and I traced into the factory unit, Voltage is exceding 10. 00v out of the ECM wire, its not that major, except everything on this ole truck works and its a SUPER clean truck, and I'm a nitt picker, I like everything to work, so I'm gonna spend some money, thanks for the help, get me the info, I guess the factory ECM has a part # to reference, and what if it doesn't? Then what?