Radio wiring diagram needed

Hello,

I have attached the pinout diagram for the radio harness.
It shows the wire color and location.

Please let me know if you have any questions.
Thank you.

https://www.2carpros.com/articles/how-to-check-wiring

Okay, thank you. I didn't see an ignition wire in the schematics. I am kind of confused about how the factory radio turned on, lol. but I don't know much about Chevrolet after the 1990s, but would it be okay if I ran it off an ignition source in dash if I could find one? or do I need to make a wire to the middle of the car for the fuse block? I don't care to retain anything in the radio enough to spend $150.00 on an interface harness to hook it up "proper" way. Do you have any suggestions/knowledge on the best way to do it? Thanks

It is the pin # B1 that provides power. You should be able to use that to get power to the unit.

I need an ignition wire source to turn the unit on when key is on, not a battery source. Is it possible you could send me a schematic of the digital ac harness so I can see if there is one I can use to save me from test lighting every wire or maybe on the 4x4 switch...there is a cigarette liter and a 12v plug below the ac controls but i doubt they are switched power, most likely constant battery but wouldn't hurt to check them too I guess, lol.

Also, a schematic of the rear radio would be a great help too.

Take a look at the radio wiring schematics.