i dunno to be honest mate if it's all wired up like it's stated it should work, unless you've blown summit inside the box before hand because they can be quite sensetive to bein wired wrong, or is the door open when your trying this cos you might find the doors won't lock if there open but the unit is trying to lock once powered up, but i'd advise to be sitting inside the car whilst you do this just in case, other than that mate i'm exhausted with ideas, unless the chip i guess u'll have inside the key is needed for the remote locking to work i'd phone up ford n ask them if your model of car would be compatible with a remote locking unit