76 pontiac bonneville car stereo wiring
Printed From: the12volt.com
Forum Name: Vehicle Wiring Information & File Requests
Forum Discription: Request Car Alarm, Car Stereo, Cruise Control, Remote Starter, Navigation, Mobile Video, and Other Vehicle Specific Wiring Info, Manuals, Tech Tips
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=137621
Printed Date: May 05, 2024 at 6:21 PM
Topic: 76 pontiac bonneville car stereo wiring
Posted By: bjhammon
Subject: 76 pontiac bonneville car stereo wiring
Date Posted: November 08, 2014 at 11:46 AM
I am looking for a car stereo wiring diagram for a 1976 Pontiac Binneville Brougham.
Thanks.
Replies:
Posted By: i am an idiot
Date Posted: November 08, 2014 at 8:22 PM
What color are the wires behind the radio?
Posted By: Ween
Date Posted: November 08, 2014 at 11:05 PM
yellow...accessory power, grey...illumination, black...ground,
speakers could be tan/grey...left front +/-, light GREEN/ dark green...right front +/-, OR light GREEN/ black...spkr +/-, same for both sides. BROWN / yellow...left rear +/-, dark blue/light blue...right rear +/-, OR brown...left rear +, dark blue...right rear +, speaker - common to vehicle chassis.
Posted By: howie ll
Date Posted: November 09, 2014 at 4:24 AM
Or use a test light and a PP3 battery.
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: bjhammon
Date Posted: November 09, 2014 at 7:52 AM
Thanks for all the help! I really appreciate it.
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Bj hammon
Posted By: bjhammon
Date Posted: November 09, 2014 at 7:54 AM
Not sure. Just wanted to do all my research, before I install my after market stereo.
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Bj hammon
Posted By: i am an idiot
Date Posted: November 09, 2014 at 8:55 AM
If it is a common ground system, you have to run wires to each speaker.
Posted By: howie ll
Date Posted: November 09, 2014 at 9:29 AM
I also thought that Craig but was too lazy to mention it!
Surely they'd got rid of that system by then?
I remember early VW Siroccos had a common ground on the rear speakers.
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: i am an idiot
Date Posted: November 09, 2014 at 7:33 PM
I do not remember when they went away from common ground on the GM products. I know it was mid 80s when they started making high power radios. I do not remember having to rewire as many GMs as I did Ford products. Or using those old floating ground adapters. Those things defeated the purpose of high power. They simply used the positive speaker wires with a large capacitor to block the 6 volts DC on the speaker wires of the new decks.
Posted By: Ween
Date Posted: November 09, 2014 at 8:58 PM
Change over from the GM common ground system was late 70's, right before I started doing car audio. Yes, I'm old.
Posted By: howie ll
Date Posted: November 10, 2014 at 12:37 AM
I remember a boss doing a Toronado back in 73, all I could remember was the vehicle shape.
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: i am an idiot
Date Posted: November 10, 2014 at 10:56 PM
The thing I remembered about that one was the lack of a transmission hump.
Posted By: howie ll
Date Posted: November 11, 2014 at 3:58 AM
Yes, just like an Austin 1100, times I had in the back of my friend's one in my youth  ------------- Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
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