1993 Chevy P30 fuel pump help

Fuel pump / sending unit was replaced as a whole. I can hear no pump while the key is turned on. I will open the line at the filter to verify but I believe the pump is getting no power. In the 3 plug wire is it the middle wire that supplies the power and do you know what volt is supposed to be supplied. My Dad has a 1992 p30 and you can hear the pump when the key is turned on as mine use to do. These seem to have pretty noisy fuel pumps which makes it pretty obvious when you can only hear silence. I will check for a box near the peddle in the dog house.