Where can I find stator wireing diagrams for an old Palmer 12 wire AC generator (model no. unknown) with lead designations:
012345678ABC

Mike Holt had a thread on this

http://forums.mikeholt.com/showthread.php?t=99950

There is a diagram that looks like what you need

http://www.northern-lights.com/PDFs/manual_pdfs/OLXE.pdf

Go to page 17 and witness a delightful diagram.

This sheet is pretty generic -- and surely applies to your unit.

Some testing with a meter should dope out what leads map out.