Factory alarm problem

[Sniper308]

Hi guys have prob with factory alarm took battery off to do some repairs now every time the door is opened alarm goes off put key in ignition and it stops and I take key out and doors lock and alarm arms its self get out of car to lock doors with key and their is no central locking sound open door and alarm goes off any help please thanks

[Sniper308]

Thanks for reply sorry to sound stupid but could you explain please thanks

[Sniper308]

Hi bit of a update the central locking will only work when key is in ignition with ignition lights on soon as key has taken out the doors lock and alarm arms shut door and try central locking and it doesn't work so has to be dead locked to lock doors I have found alarm interface for fob locking which does not work part no is 91145514 Vauxhall code hoping radio remote control unit could this be causing prob not sure thanks

[Sniper308]

Great Thankyou will give it a try cheers bud