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04 Pontiac Grand Am Monsoon Amp Wiring

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Member - Posts: 2
Member spacespace
Joined: November 02, 2007
Posted: November 02, 2007 at 6:47 PM / IP Logged  

I am looking for the color codes for the factory monsoon amp in my 04 grand am. Which wires are used for a signal converter to power an aftermarket Powered sub without disabling the factory system?

Can you help?


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Joined: December 14, 2004
Location: Isle Of Man
Posted: November 03, 2007 at 9:11 AM / IP Logged  

Behind the radio:

+12V DC Battery(Constant)Orange  Radio 15 amp Fuse block behind right side of dash 
Ground BLACK/ white  
Remote Turn On(output) Dark green  
Illumination Brown & gray Also brown from steering wheel controls 
Steering Wheel Control Wire Yellow, black & light green  
Left Front + Tan Line level output 
Left Front - Gray Line level output 
Right Front + Light reen Line level output 
Right Front - Dark green Line level output 
Left Rear + Brown Line level output 
Left Rear - Yellow Line level output 
Right Rear + Dark blue Line level output 
Right Rear - Light blue Line level output 

Amp outputs:

12V DC BatteryOrange or ORANGE / black Pins E-11 & E-12 Trunk rel 20 amp Junction block behind left side of dash 
Remote Turn On (input) Dark green  
Left Front Mid + Dark blue  
Left Front Mid - Light blue  
Left Front Tweeter + Black  
Left Front Tweeter - Yellow  
Right Front Mid + Orange  
Right Front Mid - Dark green  
Right Front Tweeter + Light green  
Right Front Tweeter - Purple  
Left Rear Tweeter + Red  
Left Rear Tweeter - Purple  
Right Rear Tweeter + White  
Right Rear Tweeter - Yellow  
Subwoofer 1 +  
Subwoofer 1 - Lt.GREEN/ black  
Subwoofer 2 + Dark green  
Subwoofer 2 -  

Member - Posts: 2
Member spacespace
Joined: November 02, 2007
Posted: November 10, 2007 at 3:02 PM / IP Logged  

Hey, Thanks! That worked out great, sort of. Now I have a new problem. I installed a powered sub and wired the low level inputs in ahead of the monsoon amp and all is well. Until I start the car and then the sub shuts down. If I unplug one channel, it will work but will not work with both channels connected when the car is running.It will work for hours with the ignition in the accessory position but when you start the car, the sub shuts down after just a few minutes. If you shut off the car, (just back to the acc position, the sub will pick back up and go again. I have checked everything from polarity on the inputs, to the charging system (thinking it was handling something) to grounds and power cables.

Do you have any helpful hints? Is there something in the security sytem in 04 that affects the radio signal output when the car is started?

Member - Posts: 1
Member spacespace
Joined: December 16, 2007
Location: Kansas, United States
Posted: December 16, 2007 at 12:19 PM / IP Logged  
yea as dumb as it sounds this is how it works the amp is  actually sound sensing so heres what i did take the neg off the left and pos off the right  this has to be used for both inputs to the converter rca out from the converter will use a y adapter to regain 2 rca's it worked on mine

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