Here is the audio stereo radio wiring information for your 1994 Mazda Miata with the standard or amplified systems. It will be useful when installing a stereo sound system, aftermarket headunit radio, or other automotive accessories. Make sure to grab the appropriate tools to test all the wires in your Miata. Please check it over and use it as a GUIDE only to help you locate the appropriate wires. This schematic is provided free of charge and may not be 100% accurate. Failure to properly test all the wires may lead to vehicle or bodily damage. All information is provided as-is and accuracy is not guaranteed.
If you find any conflicting info please leave a comment with what you found in your 1994 Mazda Miata. If you don’t see the audio radio wiring diagram you need comment and we will try to add it ASAP. Thanks for looking!
1994 Mazda Miata Audio Wiring Radio Diagram Schematic Colors – Aftermarket Stereo DIY Installation Help
Car Radio Constant 12v+ Wire: Blue/Red @ Radio Harness
Car Stereo Ground Wire: Black @ Back of Radio
Car Radio Ignition Switched Wire: Blue/Black @ Radio Harness
Car Radio Illumination Wire: Red/Black @ Radio Harness
Car Radio Dimmer Wire: N/A
Car Radio Amp Turn On Wire: Light Green/Yellow @ Radio Harness
Car Stereo Power Antenna: N/A
Left Front Headrest Speaker Wire (+) Positive: Red/Yellow
Left Front Headrest Speaker Wire (-) Negative: Blue/Orange
Right Front Headrest Speaker Wire (+) Positive: Red/Blue
Right Front Headrest Speaker Wire (-) Negative: Blue/White
Left Front Door Speaker Wire (+) Positive: Red/Green
Left Front Door Speaker Wire (-) Negative: Red/White
Right Front Door Speaker Wire (+) Positive: Brown/White
Right Front Door Speaker Wire (-) Negative: Brown/Blue
Radio Removal Tools: Plastic Vent Removal Tools
– Open the center console lid and remove 2 screws at the bottom of the console. Remove 1 screw under the cup holder on the console. Remove 1 screw from each side of the center console near the shifter. Unscrew the shift knob for manual trans. Pull the center console and unplug the connectors make sure to feed the gas door levers through the hole inside the console. Remove 1 screw at the bottom of the radio bezel. Using the plastic tools above and a scrap piece of wire pop the center console vents out. Remove 1 screw behind each vent. Now pop the radio bezel the radio is then held in with 4 screws.
Keep in mind if you are installing a new radio in your Miata you need the wiring harness and the mounting kit as well.
REQUIRED PARTS FOR AFTERMARKET RADIO INSTALL
MOUNTING KIT FOR SINGLE DIN AFTERMARKET RADIOS:
OEM AUX AUXILLIARY PORT RETENTION:
STEERING WHEEL CONTROL INTERFACE:
RECOMMENDED TOOLS FOR THE INSTALL – SAME ONES THE PROS USE!