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2003 Oldsmobile Alero Radio Wiring Diagram


Whether your an expert installer or a novice enthusiast with a 2003 Oldsmobile Alero, 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 radio wire colors for a 2003 Oldsmobile Alero.

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 or car radio wire colors that are listed on Modified Life but keep in mind that all information here is provided “as is” without any warranty of any kind and most diagrams listed on our site are submitted by our Modified Life community. Use of the wiring information is at your own risk. Always verify all radio wires, wire colors and wiring diagrams before applying any information found here to your 2003 Oldsmobile Alero.

If you can’t find your car radio wiring diagram, factory radio wire colors 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 Oldsmobile Alero Car Radio Wiring Diagram

Application Wire Color
Radio Constant 12V+ Wire Orange
Radio Ignition Switched 12V+ Wire (Class 2 Data)
Radio Ground Wire Black/White
arrow Use a Car Radio Wiring Harness and Car Radio Dash Kit for an Easy Install!
Radio Illumination Wire N/A
Radio Antenna Trigger Wire Dark Green
Radio Amplifier Trigger Wire N/A
arrow Use an Amp Integration Harness to Connect Your Factory Amplifier to an aftermarket radio.
Car Stereo Amp Trigger Wire Pink
Car Stereo Amplifier Location Driver side of the trunk.
arrow
Front Left Tweeter Positive Wire (+) N/A
Front Left Tweeter Negative Wire (-) N/A
Front Right Tweeter Positive Wire (+) N/A
Front Right Tweeter Negative Wire (-) N/A
arrow
Left Front Speaker Wire (+) Tan
Left Front Speaker Wire (-) Gray
Right Front Speaker Wire (+) Light Green
Right Front Speaker Wire (-) Dark Green
arrow
Left Rear Speaker Wire (+) Brown
Left Rear Speaker Wire (-) Yellow
Right Rear Speaker Wire (+) Dark Blue
Right Rear Speaker Wire (-) Light Blue
arrow Use a Steering Wheel Control Adapter to Keep Your Steering Wheel Controls.

4 thoughts on “2003 Oldsmobile Alero Radio Wiring Diagram”

  1. Aaron, run a primary wire to your steering column and tap the orange wire in your ignition switch harness. This orange wire will provide you with a switched power. Hope this helps. Good luck with your 2003 Oldsmobile Alero.

  2. Derick, technically you could connect your 2003 Oldsmobile Alero amplifier turn on wire to the radio switched 12v+ wire. That way your amplifier is on whenever your 2003 Oldsmobile Alero is on and off whenever your 2003 Oldsmobile Alero is off. Just make sure to run an in-line fuse holder with a 1-amp fuse on the amplifier turn on wire. Hope this helps. Good luck with your 2003 Oldsmobile Alero amplifier install.

  3. i have a 2003 oldsmobile alero 2dr sedan v6 and im trying to find the wire that i connect my remote wire to, to go back to my amplifier for my subwoofer.

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