radio installation diagram needed?

2003 CHEVROLET TRAILBLAZER
190,000 MILES
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I am trying to put in a new head unit, but it has a Boss radio that has an amp i found out. i need a wiring diagram for that so that i can figure out how to wire it up.
Feb 11, 2024 at 4:05 PM
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JACOBANDNICKOLAS
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Hi,

This schematic is for the premium sound system. There is nothing identified as a Boss. See the last pic of my options.

Let me know if this helps.

Take care,

joe

See pics below. Note: I had to cut each schematic page in half to make them readable. I did overlap them so you can follow from one to the next.
Feb 11, 2024 at 5:22 PM
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Thanks, but not the right one because my stereo connector has A1-A12 and B1-B12 plus and a second smaller connector.

i have pins in A1,A8,A9,A12,B1,B4,B5,B10,B11
Feb 11, 2024 at 11:07 PM
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JACOBANDNICKOLAS
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Hi,

Do you recognize anything as far as type in the last pic I attached? Is the OEM radio still in the vehicle?

Joe
Feb 12, 2024 at 2:50 PM
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I still have the radio my guess is maybe the one with rear seat audio.
Feb 12, 2024 at 2:54 PM
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JACOBANDNICKOLAS
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Hi,

I attached that one below. Many of the pins align but when I got to the B connector, they appear different.

Let me know.

Joe

See pics below.
Feb 12, 2024 at 3:46 PM