wire sub + amp on stock HU

Originally Posted by bigaudiofanat

First, don't use the capacitor, it's not needed and can tack your electrical system more than help. Second as long as your amp has a High level input in, yes you can do this. Also called a speaker level input. You simply have to tap the speaker wires behind the head unit and run them into those inputs. Otherwise you have to get a Low level converter which aren't that expensive.