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Car stereo wiring diagrams, and amplifier wiring diagrams.



1. What is the difference between:

  • Car stereo wiring color codes and

  • Factory amplifier wiring diagrams




Car Stereo and Security Wiring Color Codes


When removing the original factory stereo that came with the vehicle, you will notice a plug that that is plugged into the radio, after removing it from the dash.



It will also indicate the wire color and its purpose ( Located throughout the vehicle) for installing, remote entry, security systems, remote start systems and also a GPS navigation systems, as these diagrams will indicate Vss wire or vehicle speed sensor wire, which many GPS navigation systems require.


Please note that the security wiring color codes are for the wires located in the vehicle itself, and not for the security system, remote entry, or other accessory  that you may be adding.



If you are looking for the unlock wire for the door locks:


These diagrams will indicate which wire to connect to (on the vehicles wiring harness) from your security system, two achieve this objective.





These diagrams will show you wire color codes for:

Click here for a sample data sheet

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Car Stereo and Security Wiring Color Codes









Factory Amplifier Wiring Diagrams


Factory amplifier wiring diagrams will indicate more detail

May vehicles are now equipped from the factory with an enhanced audio system that may contain:

  • Amplifiers

  • Subwoofers

  • Tweeters

  • and other upgrade device's

If  your vehicle is equipped with any of these devices:

Amplifier Wiring Diagrams, will indicate wire colors and their purpose, for the wires that go to the factory:

  • Radio

  • Amplifier

  • Subwoofer

  • Subwoofer amplifier

  • Rear audio controls

  • Audio steering wheel controls

  • CD changer

  • Satellite receiver 

  • And all speakers located throughout the vehicle


These to diagrams are quite handy to have as this will allow you to either bypass the factory amplifier, or to add other device's to it!


Amplifier diagrams however, do not contain information about the security wiring.

Please see  Car Stereo and Security Wiring Color Codes for all security wiring and basic radio wiring.




How do I know if my factory car stereo system has an amplifier?


There are a few ways to find out if your factory system has an amplifier system.

One way is to verify if your system has more than four speakers. 


If it does it probably has an amplifier.

This will not always however, be the case.


You may also want to check with your factories owner's manual to see what type of system that you have.



Many manufactures will title their enhanced audio systems

with names such as:


Premium sound

Mock systems


General Motors














   and many others

These diagrams will show you wire color codes for:

Click here for a sample data sheet


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Factory amplifier wiring diagrams






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