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Unread 08-23-2012, 10:14 PM   #1
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Default 2003 Alero Stereo Install Help

Hey fellas. Went to put a new stereo in the girlfriend's car tonight the old school way (screw a $100 harness to keep some door chimes) and got all but one wire hooked up. I can't make out where I'm supposed to pull 12V accessory from. I have two purple wires (one that is some serial wire that I thought was the one), one dark brown wire, and one dark green that I believe is power antenna (or lights, which aren't necessary of course). The factory wiring also has what appears to be two grounds (per my connector pinout sheet), while the stereo obviously only has one.

So basically, I can't figure out where the hell to pull 12V accessory power from to hook into my red wire. Doesn't make a bit of sense. I even tried jumping it onto the constant 12V orange wire and didn't get anything, so I think my grounds might be screwy.

Anybody know what the sam hill is going on here?
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