Thanks a lot guys, I don't know about the light as I've barely driven it yet, as I had to wait quite a while for our local specialist to be able to do the cambelt - didn't want to drive it with that well overdue, regardless of our prolonged heatwave here in NI
So I'll have a look at the dash when I get her back in a day or two.
And don't get me started on MG/Rover's "economies" - I've driven a 75 for the last 8 years, and love it, but when I went to fit powerfold mirrors a few years ago, I found that they'd saved a few pence by not fitting the two little orange wires which carry the switching signal to the passenger door, and had to dismantle half the car to fit some...