NOTE: In 2004 Dodge offered two different amplifiers for different trim packages. The 70-6512 harness is designed for the SRT10 trim package without the hands free capable option. The way to tell if the vehicle has hands free option is to look at the rear view mirror and see if it has an icon of a telephone on it. If there is no icon this harness will work. On the SRT-10 trim package with the hands free capable option and the 2004 Dodge Ram non-SRT trim packages please refer to the 70-6510 amplifier bypass harness.