Here you go chaps.
This is based entirely on the book that came with the timer unit. (Redz kindly scanned it in). I can accept no responsibility on this at all. It is someone else's timer, the electronics I have no control over. If your car turns purple, etc. don't blame me.
Have a look at this and see what you think. As ever, DO NOT be tempted to even check it without an inline fuse on the power! When you are testing, make sure every door is closed, boot, bonnet, etc. or the alarm won't switch on (No, I'm not going to name the numerous people I've had mail me about that one - you know who you are )
It appears as if there is no earth. This is normal - it picks it up from the footwell mirror supply earth.
Set the timer to about 8 seconds and there you go!!
Have fun and keep us informed. Oh, one final thing - make sure you test your internal sensor after this is all finished.