Running wires from Entune Premium to USB/AUX

#1
This is related to my last post but since I have figured out why my USB/aux were not receiving power I figured I'd start over.

Has anyone wired up the factory USB/aux to the factory head unit or does anyone have information that could help guide me in this? The wires that are SUPPOSED to be there just flat are not.
 
#2
It's a wiring harness like anything else. If you do a little research on google, I'm sure you can find it.
If I get time today I'll see what I can dig up.
 
#3
The wires from the plug that goes into the aux/usb join a large bundle of wires (as they travel to the back of the head unit) and disappear above the glove box only to appear again in a cluster of wires. I went to the salvage yard and looked at all the newer wrecked toyotas I could to get an idea of what's going on in a Corolla as well.
 
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