91 mustang gt i have sone the jumper test on the obd 1 connector. It tricks the fuel pump wich engages. There is power to fuel pump relay and inertia switch. But when i try to start the engine the power cuts off. I have replaced the yellow/blue fusible link in the fusible link nest. Qny suggestions? Greatly appreciate any input. Also the ecc relay has been replaced including the fuel pump relay under the drver seat.