Uh oh, I saw this when I chose a head unit about the harness...

What you need to know:

* The harness does not supply connections for the front speakers, so you will need to run new speaker wires to your front speakers.
* The harness does not supply connections for the rear speakers, so you will need to run new speaker wires to your rear speakers.
* When used in this vehicle, the functions of the yellow and red wires in the Crutchfield harness are reversed. The yellow wire supplies ignition power, and the Red wire supplies constant power.

Run new wires to the speakers??? WTF?