Not finding any pinout info to compare side-to-side these two radios. Looking at ebay listings for speaker mics there isn’t a single listing that claimed the support for both. The two compatibility groups appear to be:
- IC-DPR3, IP100H, IP500H, SK-2000, ID-51E and ID-31E
- IC-F3, IC-F10, IC-F11, IC-F12, IC-F14, IC-F15, IC-F16, IC-F4, IC-F20, IC-F21, IC-F22, IC-F24, IC-F25, IC-F26, IC-F33, IC-F34, IC-F43, IC-F44, IC-F3000, IC-F3001, IC-F3002, IC-F3003, IC-F3011, IC-F4000, IC-F4001, IC-F4002, IC-F4003, IC-F4011, IC-F3021, IC-F3022, IC-F3023, IC-F3026, IC-F4021, IC-F4022, IC-F4023, IC-F4026, IC-F3031, IC-F3101, IC-F4031, IC-F4101, IC-V8, IC-V80, IC-V80E, IC-V82, IC-V85
From this post we know that the cable discussed here should at least fit the first group.
Based on my low-grade analysis of the pictures, the spacing of the connector appears to be the same.
Pinout might be same of different. Do you happen to have a speaker mic for your IC-V85? We can derive the pinout by peeking inside and doing some continuity testing on it.