Re: gtv phase 1 key ????
joey - what year is your car? if its 98-on they moved it inside the car - inside/under centre console, below radio I think
spidermj - the alarm obviously connects into the door open/close wiring as part of its job as an alarm. but if there are any probs with alarm unit or its wiring, then it could falsely drive the door open indicator. usually when door opens, the 'door open' wire is connected to ground (to bodywork) which tells the warning light and/or alarm that door is open. if you have a short-to-bodywork on that wire going to alarm unit, or alarm unit has a fault internally on that connection, then you will get a dodgy indicator light!
Try disconnecting alarm again (turn it off with its key 1st) to see if that cures the problem, & check the wiring to the alarm while you're there (any bare wires/cuts in insulation etc.?)