Not sure how to wire up the new pump. The new wiring is red and black. Do I splice into the gray into the red and black in to the black which is in the tank? Should I use the original 3 wire connector to connect up to the new hot wire kit? Other posts have the tube cut off to increase flow but hole size coming out of the pump is still the same size anyway. Do u just let the pump rest on the hanger or fasten it down? The old pump has the foam sleeve, put it on the new one or leave it off? Please post pics if u have them