I went to a proper installation install chap from Halfords and I know he is there best installer they have at there Craigavon Depot.,After paying about £150 I went out on the Motorway to try it out from the off I knew there was some thing Wrong as it did record anything on the rear camera , So I brought it straight back to Halfords and told what had happened, The installer inspected it for more than 1and a half hours,he told me that my Range Rover 2023 was at fault, he explained that the main electrics were coming in by the roof but by the nature of the car a lot of main electrics come from the back wiper the phone and that was why the back camera wouldn’t work he told me that he would give me a week to keep trying it out which I did,got him to take out all the extra wiring looms so went home told him what happened to me ,he said to me dad I will give you £120 pounds for it I said Okay and it is going in his BMW 512 I believe and he has no trouble with back Camera or the front so I am still looking around thank you