Hi, Im new here and sorry this is kinda long, but Ive got a problem with my car and thought itd be best solved here. I have a 1997 Isuzu Bighorn(/Trooper) UBS69 3.1DTi with a Fusion headdeck running 4" JVCs off the headdeck in the rear pillar, the three sets of RCA from the headdeck go to a JVC...