Thanks Judy, but based on S320L1999's picture post, those colors I posted don't seem to match up at all. I assume that's mostly due to the 450sl vs. 560sl and not the driver vs. passenger side issue. (I have not taken out my driver side.)
So since it appears S320L1999 doesn't have a multi-meter yet, I think we are still SOL. :-(
Hopefully S320L1999 will report back what color wires are what and these two thread will have some future value.