Been a long time since I posted here, how's everyone doing?  A lot of the
same old faces I see and I'm hoping the collective knowledge of the group
can help me out.

I've got a bit of a problem with the alarm on my 97 300Tdi 110.

The alarm keeps going off on it's own at random.  Sometimes it is fine for a
couple of weeks, then it might play up three or four times in a couple of
days.  The latest was at 3:55 this morning and it's got me determined to fix
it.  In the past the alarm has gone off because of insects in the car, I
disconnected the ultrasonic sensors a couple of years back so it's not
that this time.

Does anyone know if there is a way of interrogating the alarm to see which
sensor triggered it?  All the door switches seem to be working fine, but I
haven't checked the bonnet sensor yet, that suggestion turned up when I did
a quick google before this post.

Any ideas welcomed, I don't want to have to get up at some unearthly again
to turn the bloody thing off!  It's mighty loud too with the horn and the
alarm sounder going together.

Thanks in advance,

Simon.