Ok, finally got the right Harness for my 98 GT, I wired up my Alpine CDA 7897 i have power, but no sound at all. Now the only wires that i didnt hook up to the head unit harness was amp turn on (blue and white stripe) and power antena (solid blue). Do i need to wire the amp turn on to the 12v ignition & acc or do i need to bypass the amp. im at a loss....also this is a non mach 460 car