01 suburban, aftermarket radio, factory amp

Hello, I just aquired a 01 Chevy suburban. The previous owner did a horrible job trying to install an aftermarket radio.  nothing works. he tried running new speaker wire directly from the head unit to the speakers.  Im pretty sure it has the factory amp and sub.  What adaptors do I need to connect the head unit to the amp?  And does anyone sell the factory connectors for the radio because he cut off one of the connectors. There are two connectors on the back of the stock radio. one was cut and the other is tucked up under the radio.  Thanks for any help

Does the connector you have tucked up have a pink wire on one end of it? If so, this is the factory amplifier turn on wire. All he had to do was power that wire to turn the amplifier on.

Im not sure. Im at work now and woild be able to lool at it until monday. He ran all new speaker wire from the HU to the front speakers. I would like to run it to the amp if possible. Thanks for the reply

Radio 12V     orange     +     radio harness
Radio Ground     black     -     radio harness
Radio Ignition     dk. green     +     radio harness
Radio Illumination     brown     +     radio harness
Factory Amp Turn-on     orange or dk. green     +     radio harness
     The amplifier is behind the glove box.
Power Antenna     N/A
Left Front Speaker (+/-)     tan - gray     +,-     radio harness
Right Front Speaker (+/-)     lt. green - dk. green     +,-     radio harness
Left Rear Speaker (+/-)     brown - yellow     +,-     radio harness
Right Rear Speaker (+/-)     dk. blue - lt. blue     +,-     radio harness

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But yes the Pink wire is the factory amp turn on. needs +12v


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Thank you. Looks like the guy cut the wrong connector (the 9 pin) I get the adaptor for the 21 pin and rewire it. Thanks for the help. I'll report back with my results.

will a generic 2000+ radio harness adaptor work or will I need any special modules?  I've dove several radio installs but this is a first working on a vehicle that has a stock amp.

So there's no pink wire anywhere. The is a large ornge wire in the corner of the 21 pin connector. Is that the wire for the amp

I ran into a snag. There's a 20 pin connector the had 17 wires in it. But now I can't seem to find the 9 pin harness. I took apart the dash but I can't find any loose wired at all. Where does it usually come from?

Also, mine does not have on star or bose.

Here are the wires that I have. There's 2 orange, a bunch of green and black.

And this is the connector

That harness as cut off and then reconnected by the previous owner. Not sure if he even got all of the wires in the correct spot

I got an adapter harness last night. still isnt working. the OEM harness is 2 parts. On the left is the OEM harness pinout and the right is the new adapter. also, None of the wires see 12V with the ignition on. I removed the lower dash and glovebox and I do have the amp. little silver box with 2 electrical connectors.
OEM:  New harness:
Black Connector:
1: Dark Green-----------------white W/ black stripe
2: Tan------------------------White
3: Light green----------------Gray W/ black stripe
4: Light Green----------------Gray
5: Black----------------------Black
6: Brown----------------------Orange
7: Gray-----------------------Empty
8: Orange---------------------Blue
9: Dark Green-----------------Red
10: Orange--Constant 12V-------Yellow
White Connector:
11: Purple---------------------Empty
12: Empty----------------------Empty
13: Empty----------------------Empty
14: Empty----------------------Empty
15: Green----------------------Empty
16: Green W/ White Stripe------Empty
17: Black----------------------Purple W/ Black stripe
18: Blue-----------------------Perple
19: Brown----------------------Green W/ Black stripe
20: Brown----------------------Green

I found the correct wiring diagram for the suburban. The acc on is the dark green wire between the two orange wires. The previous owner cut the harness and got the wires mixed up. Swapped them and now the unit power on and the speakers and sub work. Still have to swap some wires. The drivers rear and the passenger front don't work. But at least I have sound now. Thanks for the help

The plug colors don't look like original wires to me. Standard GM colors should be tan+ & gray- and light green+ & dark green- for front speakers, brown+ & yellow- and dark blue+ & light blue- for rears.

The colors match the wiring diagram I found.

UPDATE:

I got the wiring figured out awhile ago. The previous owner did a horrible job on the radio. he connected wrong wires together. the passenger door speaker was blown as well as the sub. Since then I have installed the Pioneer Avic 850BT from my Equinox. It required a good deal of modification to got it in there. I used the radio bucket from a 04 suburban and a dash bezel from a 03 Silverado. It needs to be cleaned up a bit.


I replaced the door speakers with some cheap Boss audio speakers for now. I'll be looking for a replacement sub, better door speakers and an aftermarket amp to run everything soon. Thanks for the help.

Also, When I turn the engine off the sound stops. I found that it has something to do with the AC blower motor. when its on the sound stops and the headlights turn off. If I switch it off the sounds come back on and the lights turn back on. Not sure where the problem would be for that.