Go here bud, I neede to know this too so I googled it.
http://www.modifiedlife.com/1996-Mazda-protege-car-stereo-wiring-diagram/
I found the pinout at http://www.installdr.com to be extremely helpful.
The wire coloring (wiring diagram) for my 1997 Mazda Protege LX was as follows:
Car Radio Battery Constant 12v+ Wire: Blue/Red
Car Radio Accessory Switched 12v+ Wire: Pink/Black
Car Radio Ground Wire: Black/Yellow
Left Front Speaker Positive Wire (+): Blue/Orange
Left Front Speaker Negative Wire (-): Violet/White
Right Front Speaker Positive Wire (+): White/Red
Right Front Speaker Negative Wire (-): Yellow/Red
Left Rear Speaker Positive Wire (+): Orange
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Green/Black
Right Rear Speaker Negative Wire (-): Green/Orange
http://www.installdr.com/Harnesses/Mazda-Wiring.pdf
Able stereo wiring diagram, for your Mazda, can be obtained from most Mazda dealerships. The wiring diagram will make wiring your stereo much easier.
i need stereo wiring schematic for 08 mazda 6 non-bose
The 1999 monster truck stereo wiring diagram can be obtained from most Mazda dealerships. The stereo has a wiring harness consisting of five wires.
A Haynes repair manual for the 91 Mazda 626 features a wiring diagram for the stereo hookup. The manual can be purchased at the book store or checked out from the library.
the12volt.com
Email me for a wiring diag. dwillman@canada.com
Check modifiedlife.com, they have free wiring diagrams.
Wiring diagram for 96 Mazda b2300
Need visual diagram wiring for 2001 Mazda tribute
Try this - it's the best thing i found... so far... http://www.installdr.com/Harnesses/Mazda-Wiring.pdf
try 12volt.com, they have free wiring diagrams for most cars, you have to register with the site but it is free and they dont sell your info.