2003 Oldsmobile Alero wiring diagram
Printed From: the12volt.com
Forum Name: Vehicle Wiring Information & File Requests
Forum Discription: Request Car Alarm, Car Stereo, Cruise Control, Remote Starter, Navigation, Mobile Video, and Other Vehicle Specific Wiring Info, Manuals, Tech Tips
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=21067
Printed Date: May 02, 2025 at 8:45 AM
Topic: 2003 Oldsmobile Alero wiring diagram
Posted By: thepencil
Subject: 2003 Oldsmobile Alero wiring diagram
Date Posted: November 05, 2003 at 10:41 PM
Thanks in advance guys.
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Be careful whose advice you buy, but be patient with those who supply it.;)
Replies:
Posted By: NowYaKnow
Date Posted: November 06, 2003 at 7:16 PM
Here's the basics..Same as a grand am if you've done one of those..Let me know if you need any other info.
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Driver underdash. Harness going into firewall. (If there's two harnesses running parallel to each other they will be in the harness that is higher up)
Constant: Red (+)
Ignition: Pink (+)
Starter: Yellow (+)
Heat/AC: Orange (+)
Horn: Black (-)
Parking Lights: Brown (+)
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Ignition Switch. Remove radio to access
Ignition 2: Dark Green
Passlock 2: Yellow and Black Wires
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Driver Kick: Harness Coming In From Driver Door Boot
Trunk Release: BLACK/ White (-)
Lock/Unlock: White (-) (Negative pulse to lock, unlock needs a 1,500 ohm resistor)
Dome Sup: GREEN/ Black (-)
Door Trigger 1: GREEN/ Black (-)
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Pass Kick: Harness Coming In From Driver Door Boot
Door Trigger 2: Light Blue (-)
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Other
Tach: White @ Coil pack
Brake: L. Blue (+) @ Brake Switch
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