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Factory speakers go off and on after installing new headunit

2000 chevy suburban 1500 2wd. installed a new pioneer headunit with an amp and subs. Subs work great but factory speakers work on occasion. Wiring is 100% correct! It has 6 factory speakers, so i beleive it has a factory amp, i beleive that m,ight be the problem, some sort of problem with the high power head unit, and the factory amp.Please anyone help, im stuck!!!

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  • ronaldlperro May 13, 2009

    Thanks for the quick reply.



    Please explain further what this will do and how to install it, never used a bypass harness before. Where does it tie into the system?

  • ronaldlperro May 13, 2009

    I almost forgot. Where is the amp??? I looked and couldnt find it.



    Thanks

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Yes - your vehicle has a factory amplifier.
You will need a bypass harness.
Metra Electronics # 70-2054

factory speakers go off and on after installing ne - e98471a.jpg
CLICK HERE for an eBay auction for the harness.

Thanks for using FixYa. If you have further questions - please use the "Continue With This Expert" option so we are connected in the future.
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Posted on May 13, 2009

  • 1 more comment 
  • blueextc3221
    blueextc3221 May 13, 2009





    You must locate the factory amplifier (usually in the cargo area behind a panel - instruction sheet will give exact location).



    You unplug the input to the amplifier and plug into the bypass harness for power, ground, remote, illumination etc.



    The other plug comes from the OUTPUT side plug of the amplifier (the side going out to the vehicles speakers).



    Then both harnesses run back to the radio opening and you attach the ends to your new aftermarket radio's harness.



    You are essentially jumpering out the amplifier. Most CAR amplifier bypass harnesses are less than 12" long - however since your amplifier is located in the rear - this one is 204".



    From Metra:

    Many vehicles today are already equiped with factory amplifiers. When upgrading to an aftermarket radio, integration with these premium sound amplifiers is not always the best choice, or in some cases, not even possible. A wise alternative is to bypass. Most factory amplifiers are six or more channels, so Metra's bypass harnesses are designed with 17-foot speaker wires connecting to the original amplifiers outputs, allowing the installer to run one simple cable to anywhere in the vehicle, either the dash or a new amplifier. Most Metra bypass harnesses include an instruction manual giving factory amplifier location and listing special color codes.



    Your 6 speaker system requires this harness.



    Im here if you need more clarification.

    Thanks!



  • blueextc3221
    blueextc3221 May 13, 2009

    try behind the glovebox - i forgot that it is a harness for many applications - and the caddy amps are in the trunk.

  • blueextc3221
    blueextc3221 May 13, 2009

    CLICK HERE for the wiring diagram if you want to attempt your own "bypass"



    ALSO - THIS FORUM seems helpful in bypassing the amplifier without the harness - however you will lose Factory Chimes and Onstar if you dont use the harness.



    Read through it, and if you have additional questions let me know!!



    Thanks For Using FixYa!!

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