Using Mausberry with Amp2

Hello, I am using the hifiberry to get audio from my pi 4b and official display to my truck speakers in a full replacement of an old stock unit using OAP. I have seen that the amp2 I ordered would power the pi from itself with a 12v cable. I have also wired in a 4amp Mausberry board to allow for a time delayed shutdown script to run when i kill the engine of my vehicle. I would like to know if this is still a possibility through the amp2 or if I would need to try another route powering the device, as I do not with it to draw power while parked and not in use. Thank you for your time.


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