Had my van broken into Xmas day, seems I accidentally left it unlocked, even though I was sure I had locked it seems I forgot after going out to do someone a favour.
What I really want to do is pick up a voltage (i will be using high value resister in line for signal detection), either to detect the doors locked or a pick up the door locking/unlocking that will send a radio signal to a monitoring unit in the house that will indicate if the doors are unlocked, locked or open.
Also I am thinking of fitting extra extra door switches to detect and set off the alarm if some scumbag tries to prize any of the doors before they do any damage.