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    Help replacing Mach 460 w/ a Sony?

    A little background: The car is a 2004 Mustang Coupe with the Mach 460 system. The head unit is a Sony GT565-UP. I also got a dash kit and the appropriate wire harnesses from Crutchfield (#120705521). When I went to solder the wires from the head unit's harness to the Crutchfield harness, all...