I have the exact same set up from EAS. My installer told me that he too had a problem with the reverse camera. The problem we had was the wire from the VSM that connects to the vehicle's reverse signal wire that lights up the reverse lights needs to be fed via a relay. The reason being is that the reverse signal wire from our X5 is a pulse signal. Not sure why, but I was told that if we could watch the reverse lights in a slow 'frame-by-frame' session that it would result in a pulse like behavior. Regardless, you can still use this reverse signal wire to turn on a relay using it to power up the reverse cam when the X5 is in reverse.

Hope this helps.