My car has died multiple times. I bought a new PMP because I thought the first one was faulty. Second one also doesn't shut off the cam below 12V.
I had the same issues on my car and my wife's car... I connected it correctly, but on my car the PMP LED was always ON.
I didn't check that point on her car.
I replaced he battery (which was less than 2 y.o, her car is brand new) with a new one after a recent drain (about 3 weeks ago), today her battery was again empty (3V!!!!).
These are 2 completely drained batteries in 3 weeks.
I've checkd on the internet about that issue, many people had the same thing.
In my opinion there has been a mistake on the wiring of their 5 wires connector at some point.
Just hope that Blackvue will feel a bit concerned about that issue, we are not isolated cases.