I paid around $50 for the interface. Install isn't too bad, but the instructions are poor. I recommend using the
Metra ASWC.
Tutorial I posted on Focaljet:
There are three harnesses behind the radio, one for speakers (8-pin); one for power, ground, ignition and dimmer (7-pin?); and the third one (unused for aftermarket stereos) is used for the factory sub and steering wheel controls(smaller 17-pin).
Resistance Type Control System YES
Reference Ground Wire Color BROWN/YELLOW Connect this wire to ground
Reference Ground Polarity (-)
Reference Ground Location RADIO HARNESS
Reference Ground Pin # 12
Control Wire 1 Wire Color WHITE/BLACK Connect the white/green wire of the ASWC harness to this
Control Wire 1 Polarity (-)
Control Wire 1 Location RADIO HARNESS
Control Wire 1 Pin # 11
Other than that, just connect the red to an ignition switched wire (behind the radio is easiest), the black to ground, and plug the cable into the jack on the back of the receiver.
You will NOT use any other wires on the ASWC harness! You can pull the pins out of the plug or just tape them up.
