It would be good to know if your Ford has antiaranque or not. If you do not have the electrovalve, it is easy to remove, it goes at the top on the side opposite to the piñon, tine a single cable that you can remove with facius, then the deender, you take out the plunger that almost certainly will remain inside, with a spring like ball, you move the new one, and ready. If you have to enter the thing, it changes quite a lot since you have to take out the anti -theft screw that you carry to reach the electrovalve, and this is already a fairly complicated task, if you doubt you do not mess.