jsoto,
Yes, currently only for when it's running as we were involved in a minor accident on the road and the other party had a very conflicting story and there were no witnesses. So I wanted to avoid such situations in the future. It is also not that critical that we want to wake up a dead batteries so running it off a switched source made most sense in my case.

Also, the dash cam I got (ROAV S1) has an internal battery and a parking monitor feature that detects shocks and starts recording. But I haven't tested that feature so not sure how well it works.

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06 X5 3.0i