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Radio Console wireing

I'm tring to find out the color combination on the back of a 2003 Chevy TrailBlazer radio, so that I could hook up a car ampliflier threw the factor speakers.

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  • Christopher Renner
    Christopher Renner May 11, 2010

    Does this vehicle have a Bose sound system or OnStar, and are you adding a new head unit or are you just trying to insert an amp in between the factory head unit and the factory speakers?

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A decent auto repair manual for your 2003 Chevy TrailBlazer (such as Chilton's, Clymers, Haynes, etc...) with a complete wiring diagram should give you the color codes for the factory speaker wiring. You can probably find and copy the pages you need at your local Public Library too.
Good Luck.

Posted on Feb 25, 2008

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Ok without you giving any detail as to what kind of car and the make and model or year im just going to try to give a general explanation.

Common wiring colors and what they do -
Black- is always the ground wire. Always. This must either be connected to another ground wire or connected to metal, for the device to work.

Red - Red is always the power cord, always. This must be connected either to another red power cord or straight to the vehicle battery.

Im not sure what your referring too with "acc"

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Yellow/pink/green/violet - are probably all specific speakers inside your vehicle and respond according to colors on the back of whatever you are trying to install.

**special note, there are tons and tons of different combination's of the colors and wires throughout the various automobiles in the world, it is easiest to check your manufactures website or handbook or manual to find out your vehicles wiring guides and colors.

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