Batboard

Good evening. I recently purchased a used ICOM SM-25 Desk Microphone only to discover that the previous owner has evidently changed the connector. Can anyone tell me the correct wiring configuration for the appropriate 8 pin connector? As I do not have a wiring diagram for the microphone (and can't find ond even after a lengthy internet search), I just need the wire colors and pin assignments. I'll just have to hope that the wiring color scheme was standardized. Thanks.

Kirk - KD5HNV