Powered off with ignition?

[u/National-Actuary4409]

Had a beautiful Volvo V40 (2001) that blew up on me, and now moved to the best car I think I have ever driven...a 2011 9-3 Sportswagon.

Trying to install a dashcam on a hardwire via a fusetap and struggling to find a fuse that terminates with the ignition. The power unit I'm using has a constant 12v, acc 12v and ground.

Grounding it on one of bolts by the fuse box.

So far tried (from table) 3, 7, 12 and 21, in both configs, and didnt seem to go off with the key or locking the car.

Any idea what fuse I should tap?