Connect tachometer to 2022 Mercury 25-30HP EFI outboard on boat. 

I may have noted it. Search for Gemini repower on RU-vid then the prosperityconsulting channel, if it noted it it will be there. But warning, I don't know if it is set right, but I have gotten used to the range I use, so probably won't fool with it. Sorry I can't be more help

Noted in the comments, it's not and didn't catch it in the video neither.