hi mate iv dun stuff like this a few times now on mondeo 1.8td,
u get the same problem if u jus change the pump, it shouldnt even crank!
anyway you need to remove the tamper proof plate from the two pumps (original for car and new) and swap all the electric gubbins over keepin the original items to the car on the car. fuel pump will let its fuel through then, should also crank over again. you will need to remove the pump off both engines i woul think, put 1 in a vice and tap the shere bolts out with a punch
good luck regards mart