There are MANY Dash Cams available on the market.
Here’s an installation of a Blackview camera system (BlackVue DR750-2CH LTE 4G Cloud-Connected Front/Rear Dash Cam with 32GB microSD Card) by Bell Auto Services – with front and rear cameras. The system has cellular connection and stays on all the time – so images are stored on the cloud and can be viewed when away from the vehicle. A nice tidy solution giving extra security.
This camera setup was wired to the CTEK Smartpass 120S on the dual battery system, so draws power from the Service Battery on the “Consumers” output, so that the Battery Guard can turn it off as a non-critical device if the Service Battery power is low.