Little video on installing a aftermarket reverse camera can supply links if needed 👍👌
Camera link here

https://www.ebay.co.uk/itm/Car-Rear-V...

Wiring harness here… takes a couple of weeks as from china

https://www.ebay.co.uk/itm/For-Ford-5...

Elm 327 reader use CH340

https://tunnelrat-electronics.fwscart...