I need to check power to my fuel pump on 98

I need to check power to my fuel pump on 98 Expedition, which color wires goes to the fuel pump? this is the only way I can make it run after five months being a prisoner at home without my beautiful truck....;-( sad face? please tell me what color the wires are in the fat little harness that goes down the frame past the fuel tank, I know some are brake n turn signal etc, plus the fuel guage but I need to know what color are the ones to the pump itself please???? thanks and god bless!