central locking?

i changed the 20 amp fuse for the cigarette lighter and now that works but now when i try to lock it with the keyfob it just flashes loads of times and doesnt lock it did before i changed the fuse now the lighter and the 12 volt satnav port works ive reset the key fob but this hasnt helped any ideas people this is for a citroen c3 2003 thanks

allan martin
March 2012