2005 Pontiac Sunfire Stereo Wiring

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=58680
Printed Date: May 18, 2025 at 4:03 PM

Topic: 2005 Pontiac Sunfire Stereo Wiring

Posted By: Psychotron
Subject: 2005 Pontiac Sunfire Stereo Wiring
Date Posted: July 01, 2005 at 12:09 PM

I am looking to install a high level to low level converter to my cars rear speakers to add a sub woofer amp. My problem is that w/ all factory speakers systems I have seen, the manufactures do NOT show polarity on the speakers of which terminal is (+) and which is (-). For Phase purpose I would like to know which color wires on the rear speakers are + and -. Thank you.

Replies:

Posted By: Chad7n7
Date Posted: July 01, 2005 at 9:40 PM

Here you go. This is for a 2003 Sunfire, but will do the trick, as it is standard GM wiring colors. Also has the phase labeled for you.

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Posted By: Psychotron
Date Posted: July 01, 2005 at 9:52 PM

THANKS. I will check it out :)

Posted By: Psychotron
Date Posted: July 02, 2005 at 7:01 AM

OK, I just check my car (Pontiac Sunfire 2005) and the wire color does not match. It looks like they changed the colors or something. I only checked one speaker, the "left rear speaker" and it has the wire colors WHITE and BLACK. This does not match the colors from the 2003 Sunfire link you gave me. Anymore ideas? PLEASE...

Posted By: kgerry
Date Posted: July 02, 2005 at 10:49 AM

have you checked to see if your OEM system has an amp in the trunk area, driver's side?

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Kevin Gerry
Certified Electronics Technician
MECP First Class Installer

Owner/Installer
Classic Car Audio
since 1979

Posted By: Psychotron
Date Posted: July 02, 2005 at 3:41 PM

Well, if it does I don't know where to find it. I looked in the drivers side trunk area but don't see an AMP. If its there I don't know exactly where to find it. Do you know the precise location it would be? Must I remove trim and carpet to tell? TIA.

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