Ok i bought this headunit DEH-X8600BH, i got 4 speaker 6,5" TS-A 1685R
the headunit got 3 RCA'S (4v) output front speaker, rear speaker and SUBS
i already got a sub amplifed and im about to amplify my speakers
should i run 3 RCA'S cable from the headunit ( 2 on speaker amp( front and rear)...