https://www.ebay.com/itm/Whistler-WB...frcectupt=true - I used this setup, with a solar-powered license camera (which you have to turn upside down, but the monitor, which comes with it will rotate the picture) if you order one make sure it has an activation code unless used or it won't pair with the monitor Ok monitor if you don't want to fiddle with wiring, not so great at night.

The camera is totally solar powered / plate must be mounted upside down and the screen will need to be rotated in the monitors' setup menu.