So the Rcas in my Gfs car broke. basically the ends just snapped in half. so i went to a car sterio shop and they just gave me new ends because i know one of the guys who works there. so now i have replacement rca ends they unscrew and somehow im suposed to soulder the 3 pairs of wires that are in the rca wire to these new rca ends but i have no idea how or where they attach to. can anyone help?