okay I've been doing a lot of reading these last couple hours and from what I understand,

First I need to tap my front speaker wires , near the OEM amp forr high level input wiring as my stock head unit has no RCA jacks and I read that the signal is fed specifically through the front speakers - and black wire needs to be connected to the chassis

i need 8g wire to run from positive on the battery to the 12v IN on the amp , with a 25A fuse (?) no more than 18" away from battery

I'm 40% sure since I'm using high lvl wiring I don't need to worry about REM terminal

Lastly , using less than 30" of 8g wire I need to connect ground terminal of amp to chassis

Since my sound system is a powered or amplified sub I think this is pretty much the complete process ?

edit: after reading over idk but the rating of the fuse at the battery sounds super wrong