ANYONE HAVE 4 CHANNEL DASH CAM INSTALL TO SHARE

Looking for ideas on 4 channel installs in particular where to place the two side cameras. Have done a search but nothing specific.

Seen a great idea for the rear one on a 4runner vid. I'm going to remove the rear headliner tab and secure a metal bracket in that location.
https://www.youtube.com/watch?time_continue=10&v=YUsHouIxVqs

 

to get a 4chan setup you will have to run 2 x 2chan setups. right now no mainstream dashcam oem makes a 4chan setup from what i remember.

 

i think the mainstream oem will probably go 3 chan for the uber/lyft crowd. front, rear, inside.

but even then they still dont make a 3 chan version either. blackboxmycar still has a mix and match system for a 3 chan setup. a 2 chan setup and add a 1 chan cam.