I remember one forum owner (not here on TM, I think it was a Volvo forum) who happily hard wired his direct to 12V after removing the cigar lighter plug. Result - one very cooked camera!
Unless it was a very old Volvo it’s amazing he didn’t upset the multiplex system.
BR Colin
One those S40/V40 IIRC - the ones built in the old DAF car plant. 12V power taken directly from fuse box (possibly interior light circuit - but it was a few years ago. I mainly remember having a smirk at him removing the cigar lighter plug from the dashcam lead!).
Graham (G4FUJ)
Sold L44FOR 4/4 Giallo Fly '11 MINI Countryman Cooper D All4 '90 LR 90 SW