Help needed installing rear camera in F20

[Ove Soegaard Nielsen]

Can somebody here help me with some instructions how retrofit a original camera and camera module in a BMW F20?
1) Best way to fit the reverse camera
2) Where to place the control unit
3) Where do I connect the power to the control unit in the power Box
4) Where to fit the wires to the NBT Professional Navigation

I hope to hear from one of you with some guidelines to do the job.

Regards,
Ove - Denmark