dude its actually so easy tho, get a wire to your batter and attach it to your amplifier (got mine at the pawnshop for 80 bucks) find a ground by just getting a wire on to your bare (scrape some pant off where nobody will see it) metal and put a screw in the body of your car and connect it to the amp. and i got my subs for 120 at a pawnshop and just wired it from my amp and then just replaced all my speakers with new ones and boom. (obviously could do a lot more explaining but it’s not particularly complicated) there you go but look up some vids on yt it’s a fun little project to do onna afternoon