Reverse camera

[T16mbo]

Just purchased my dads t6
Swiss vans installed a pioneer avic-z910dab back in 2018. It had a reverse camera fitted and in its time replaced 2 times. It’s not worked for a while . I took a look earlier at the camera end and all looked ok.
When you select reverse it’s a black screen .
Does anyone know where I can get one of these cameras please . Can’t seem to find anything

 

[ArtD]

I had the same problem with pioneer as well but sortied it out with additoinal relay:
ATD CCA-18510 Reverse Camera Relay Power

all works well now. you need to have access to extra power for the reverse camera and put a relay in between. happy to show on photo as I'm still working on roof