Last year, Terry aka TLP from M3 Forums figured out how to retrofit the M5/M6 SMG shift knob on a E46 M3 SMG. The shift knob that comes with the M3 SMG really looks like it belongs on a toy car IMHO. Nevertheless, the M5/M6 shift knob also is illuminated.
TLP's original post with info re: connectors, etc.
http://www.m3forum.net/m3forum/showthread.php?t=83712
Vrooom's post with more detailed instructions:
http://www.m3forum.net/m3forum/showt...smg+shift+knob
Anyhow, finally did it this past week.....