i have a 99 cobta svt edition and my swiring harness is burnt for the ecu and the fuel inj. my questions is is there a difference between a 03 and a 99 wiring harness because ford dont make that part any more and the only way i can get it is used but the place that has the part sys there is no difference but the plugs for the fuel inj. will not plug up . i have square plugs on the car and there showing me oval type looking plugs help help[ help