Morris Minor Owners Club

Hi all,
Could anyone tell me what the amber warning light at the left of the speedo is please?
I've checked my manuals and surfed the net but can't find it in writing.
I assume it's oil pressure, but wasn't sure.
It's on a 1969 Traveller
Thanks
Rob

Thanks everyone!

Thanks for your replies!
It seems to me that where the door bolt goes in to the car would get in the way of any piece of wood though.
Do people have a piece cut out to avoid this or is there a little trick to be done?

I've seen that a few people have a nice piece of wood covering the space where the spare wheel sits.
I don't have this though on the Traveller that I have just bought! Is this because mine is missing or are they DIY jobs?
Thanks
Rob