Had this little alarm lying around at the back of the bench for some years. It was in a little hand held box with a push button. Carol's mother who had Parkinsons and was wheelchair bound and couldn't really speak used it to attract Carol's father's attention. I'd no idea what I was going to use it for, until yesterday.
It is now fitted under the bonnet of the Sears/Roper.
Link to video.Takes a couple of minutes. P1020339.MP4
Only works when ignition on, but I may wire it up to a micro switch under the seat.