Little light thingy above fuel guage

[zorruno]

If anyone is interested - this question came up at Fletchers place a while
ago.
I finally remembered what that light was for when prompted by the miata
list...

This from the list...

"And to answer your question, the Miata does not come with a low fuel light
indicator. I believe the little square above the gas gauge is actually a
defroster light for those who have hard tops with rear window defrosters."

H.