which fuse and what amp for central locking of a vauxhall vectra?

A couple of years ago the car alarm kept going off so the AA guy removed it. This affected the central locking as well. My boot catch suddenly locked on New Years Day and the boot is now open but cannot close as the latch has locked. I have replaced the lock but the new one has also locked when I replaced it and will not open. Which fuse do I put in and what amp does it need to see if this will sort the problem? Or is there some other solution?