Is there an installation fee for the dash cam provided by the 4S dealership?

I would like to ask if any fellow car enthusiasts have installed a dash cam. It's been a year since I got the car... and it's still without one [covering face].

Which dash cam should I use?

How about adding an aftermarket sound system? Any recommendations? Also, what about dash cams?

I want to install a dash cam on my 2024 JETOUR X90 Plus manual version. Any suggestions?

Does the HS7 come without a dash cam? Do I need to install one myself? Where is the best place to install it?

Can the front radar be installed at the 4S dealership, or do I need to have it installed elsewhere?

The dash cam on my 2021 Outlander sometimes has a black screen upon startup, and I have to turn it on manually. Is it about to fail? What model of dash cam would be suitable to replace it?

Why is there no sound on the dash cam?

Does anyone know how to upgrade the parking monitoring on the original 360 dash cam?

Has anyone installed the dash cam for the Uni-T? The original car only has an emergency recorder.