2007 Mazda 3 About 2007 Mazda 3 2007 Mazda3 Compact car MPG: Up to 28 city, 35 highway Horsepower: 144 to 151 HP Curb weight: 2,795 to 2,998 lbs Other model years: 2005, 2006, 2008, 2009 Engine: 2.0L 4-cylinder, 2.3L 4-cylinder 2007 Mazda 3 Car Stereo Wiring Diagram : 2007 Mazda 3 Car Radio Wiring Diagram Car Radio Battery Constant 12v+ Wire: Orange/Black Car Radio Accessory Switched 12v+ Wire.. 2007 Mazda 3 Stereo Wiring Information Radio Battery Constant 12v+ Wire: Orange/Black Radio Accessory Switched 12v+ Wire: Orange/Black with Silver Dots Radio Ground Wire: Black/Green Stereo Dimmer Wire: Orange Left Front Speaker Positive Wire (+): White/Black Left Front Speaker Negative Wire (-): Gray/Black Right Front Speaker Positive Wire.
Our complete Mazda radio wiring diagrams make it easy to find the stereo wiring harness colors, speaker wire colors, and speaker sizes for your vehicle. Each Mazda radio wiring diagram is based on real-world installs or verified info from our helpful community.. Show device-specific * / Mazda / Mazda 3 / Mazda 5 / Mazda 6 / Mazda 7 / Mazda MX-5 OEM Radio Stereo Head Units pinouts only (please note that filtering may not be accurate) or follow to 8 OLD hardware pinouts.