Does the wiring harness clip into the back of the head unit?

Otherwise i'd hit up Sony tech support to find the part.

I have a Sony CDX-GT530UI but took my car to a shop to get my stuff put in. All the guy needed was my head unit and the wiring harness that plugs into the back of the head unit itself. Just one clip.

I don't know if that help at all.. lol

Regards & good luck,
Eric