I'm new to this forum and I hope this hasn't been discussed elsewhere. I have a 2001 defender 90 TD5. I'm going to fiddle with some of the electrics ( 12v socket etc) and I am perfectly happy doing this in most vehicles HOWEVER, I can see from the various threads that the immobiliser / alarm can be a little temperamental. I've read the procedure for disconnecting the battery within 15 secs- do I need to do anything special when I reconnect or does the alarm immobiliser stay synced with the key fob. Any wisdom will be appreciated !!!