I bought a manual from this company in 2016. It is a PDF of the factory manual. It's only shortcoming is the hot links in the PDF don't work. But the manual is very useful and thorough. The wiring diagrams are extra and I probably have used these more than the manual.
https://www.factory-manuals.com/ford-transit-connect&28&164
I mounted the amp under the driver's seat. My 2016 has large blocks of styrofoam under the carpet.
I don't think the 2022 dash is the same as the 2016 or I would send you info.