Ok, when I connected camera and a wire " back" from the unit to reverse lights I got nothing... When I connected camera and " back" wire to my old audio harness which had Positive and negative wire I got picture from the camera so I know it's working it's a constant power and I want it to work when I shift the car in reverse....looks like reverse wiring cannot switch the camera, not sure why.
Anyone knows what I can use to power the camera and back wire from the unit so it will work when i shift in reverse.

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2009 BMW X5 E70 - Sport

SOLD - 2003 X5 4.4 Sport Grey-Green Metallic
Mods:
20” Style 87 Wheels, Running Boards,
Integrated OEM BMW Navi, Intravee
DEPO Headlights with LED AE, DEPO LED rear lights
CAI, DINAN Strut Bar,OEM Body kit