Radio installation diagram needed?

Tiny
CARMIE909
  • MEMBER
  • 2003 CHEVROLET TRAILBLAZER
  • 190,000 MILES
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.
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Sunday, February 11th, 2024 AT 4:05 PM

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Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 107,645 POSTS
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.
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Sunday, February 11th, 2024 AT 5:22 PM
Tiny
CARMIE909
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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
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Sunday, February 11th, 2024 AT 11:07 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 107,645 POSTS
Hi,

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

Joe
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Monday, February 12th, 2024 AT 2:50 PM
Tiny
CARMIE909
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  • 3 POSTS
I still have the radio my guess is maybe the one with rear seat audio.
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Monday, February 12th, 2024 AT 2:54 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 107,645 POSTS
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.
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Monday, February 12th, 2024 AT 3:46 PM

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