...if you must fit one of these things just make sure you don't do what the previous owner of my car did and scared the sh!te out of me for a few days.
He only managed to fit a buzzer that sounded exactly the same as the Low Oil Warning Buzzer which if anyone has heard this is such an annoying sound, it went belly-up a few weeks back constantly sounding off until I traced it and chucked it in the bin.
By all means fit one if you think you may need one but make sure you don't get the 2 sounding the same.
Jim.? ?