Rear view camera install

[ScottBalun]

Just wondering if I can hook a backup camera to a constant live at the rear of the car instead of a dedicated reverse trigger wire ( I cannot find the reverse wire) and then have a toggle switch at the dash when I want the radio to go to reverse screen. I have a Mk5 GTI

 

[Grendofff]

I installed a device from these sellers, so far for half a year the radio has been working fine, you can contact them here