Hey, where can i take (+) from trunk (back side) for subwoofer amp?

i have alpine swe-815 and i take remote & hi input audio from uconnect

i can connect ground to somewhere and where can i take (+) from?

https://cache3.youla.io/files/images/720_720_out/5b/86/5b8660232c593e37bd207263.jpg

electrical specs;
150w
30A
10gauge + cable

Better directly from battery.

Hi. If you do not have heated seats you will not have a fuse box in trunk. In this case you will have to connect it directly to battery. I have to do it for power supply to trailer.

If You have a 12V power socket in trunk You will also have fuse box in trunk, even You haven’t heated seats...

i have wired from uconnect +12v its seems enought amp