I had 2 kicker subs put in before i got my new deck with RCA outputs. THey wired the subs and amp into something but i cant find the wire. WHere would they wire the amp into to make the subs work without using the deck?
they most likely used a line converter(rca adapter) which is usaually wired through your rear deck speakers if you have them. they also could have use dyour speaker level inputs on your amp if you have them. there are multiple possibilities.