FYI, each camera has a single multiconductor coax cable running to it. This cable includes video signaling and power. It's a fairly well designed waterproof connector with a sealing ring to keep out water.
The underdash module has a spot for each camera to connect and a multi pin amphenol plug for power, canbus and video signals to Idrive unit.
That's about it for the wiring in this camera system.
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2023 840GC | 2021 740i | 2019 X3
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