I'm looking at doing the same, looks like all of the 12 volt sockets are always hot.
I have my radar hardwired to home link. I want to wire my dash cam to turn on with ignition. should i wire the camera to the homelink too? or would that be to much of a load on the home link? any other options? wish there was a way to wire the outlets to turn on only when the car is on like all other cars..

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2009 BMW E60 LCI 528Xi


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2002 BMW X5 3.0i E53