Help Van de Hul MM-2 wiring question


Hello all,
Please Help!
I just acquired a Van den Hul MM-2 cartridge. I need help with the wiring please. Can someone please tell me which color leads go to which pins?
The pins are labeled as follows:
Top left - L Top right - O

Bottom left - R Bottom right - O

I apologize for my ignorance, but every other cartridge I've used had color coded bands on each pin.
Thanks for your help in advance!
skipper320
Thank you so much. There isn't much info on this cartridge out there . You saved me a lot of time!
Top Left is Left + which is WHITE

Top Right is Left - which is BLUE

Bottom Left is Right + which is RED

Bottom Right is Right - which is GREEN

The "O" is the symbol that Van den Hul uses for "negative" or "ground".