Whether your an expert installer or a novice enthusiast with a 2003 Mazda 6, an automotive wiring diagram can save yourself time and headaches. One of the most time consuming tasks with installing a car stereo, car radio, car speakers, car amplifier, car navigation or any mobile electronics is identifying the correct wires for a 2003 Mazda 6.
The Modified Life staff has put their heads together to create an invaluable resource containing free car stereo wiring diagram, free car wiring diagram and free radio wiring diagram. Feel free to use any car stereo wiring diagram that is listed on Modified Life but keep in mind that all information here is provided “as is” without any warranty of any kind. Use of the wiring information is at your own risk. Always verify all wires, wire colors and diagrams before applying any information found here to your 2003 Mazda 6.
If you can’t find your car radio or stereo wire diagram on Modified Life, please feel free to post a car wiring diagram request (Radio Wiring Diagram Request Page) and we’ll do our best to find you the information you need for your mobile installation.
2003 Mazda 6 Car Stereo Radio Wiring Diagram
Radio Constant 12V+ Wire: Blue/Red
Radio Switched Ignition 12V+ Wire: Orange
Radio Ground Wire: Black/Orange or Black/Yellow
Radio Illumination Dimmer Wire: Light Green/Red
Radio Antenna Trigger Wire: N/A
Radio Amplifier Turn On Wire: Blue/Black
Front Speaker Size: N/A
Front Speaker Location: N/A
Left Front Speaker Wire (+): Red
Left Front Speaker Wire (-): White
Right Front Speaker Wire (+): Blue
Right Front Speaker Wire (-): Yellow
Rear Speaker Size: N/A
Rear Speaker Location: N/A
Left Rear Speaker Wire (+): Purple
Left Rear Speaker Wire (-): Pink
Right Rear Speaker Wire (+): White/Blue
Right Rear Speaker Wire (-): Black/Blue
 
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Im trying to install amn Amp in my car but i cant find my Amp turn on wire i dont have a blue/black wire wtich wire would it be then.
Omar,
The availability of the blue/black wire is dependent on your audio system. Technically, you could connect your remote turn on wire to the radio switched 12v+ wire (orange). That way your amplifier is on whenever the car is on and off your amplifier when your car is off. Just make sure to run an in-line 1-amp fuse on the amp turn on wire.
Hope this helps. Good Luck.
i wanna set up an amp and subs, but since there is no RCA for the stock head unit, what should i do instead??
Kodi, yes you can hook up an amp and subs but it will take a little mobile installation experience. To use your stock radio you will require a line out converter. This device takes two speaker wires and converts them to RCA outputs so you can provide an audio signal to your amp. Here is the Line-Out Converter you need:
Scosche 2-Channel Speaker to RCA Line Out Converter
If you’ve never installed car audio before, we advise you to take your car to an experienced mobile audio installer. Hope this helps. Good luck.
I want to install 2 12″ memphis subs and an 800 watt amp to my 2003 mazda 6 but i want to use the stock head unit what kind of adapter or what do i need to do this???
Thanks, Landon
Landon, most late model vehicles do not have rca outputs on the factory radio to feed an audio signal to your aftermarket amplifier. You would have to install a line out converter to supply an audio output. Here is the Line-Out Converter you need:
Scosche 2-Channel Speaker to RCA Line Out Converter
If you’ve never installed car audio before, we advise you to take your car to an experienced mobile audio installer. Hope this helps. Good luck.