wow i hate beating these topics to death lol But now im "pretty" sure as to what to do. (im using -2ga wire thats going to be tapped into for the powerfor this upgrade,jfyi). anyways, I wire my relay to the input to the FPDM (turns relay on,white relay wire)and then the output of the relay (blue relay wire i think) is run back inline with where the wire was on , on the side toward the fpdm?? Now would it be smart to run a larger wire out of the output of the FPDM to the pumps?? or would tthat not even really make a difference...considering the wire would still be necked-down @ the fpdm