Squatys7D,
I assume, due to you screen name, that you're talking about the 70 - 72 dash rod pod style.
I still have the my old lights dash pod at home. Though I don't have pictures, here is what I can tell you:
Each "light" is round not square as you've asked. The light's name appears in the center (i.e. "OIL", "GEN" yes it does say generator and not alternator, & "TEMP") The face is black. There is a thin circle surrouding the light name, the same color as the light name. On the outer-most periphery of the light there are four cut-outs on the face which form the arch of a circle. This is what you actually see the red glowing light through as the rest of the face is solid and black. Think of how you would make a circle if you had to stencil it. I forget how thick the cut-out is.
For pod layout see:
www.chevelles.com/shop/ss_ident.html on this site.
I hope this helps. What are you trying to do anyway?
[This message has been edited by michael j (edited 06-08-99).]