Question about Alpine Car Speakers & Subwoofers

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I need to connect an Alpine Stereo to a 12v battery in a boat. I know that that is not recommended but we got it used. I am not sure which wires to connect to where. Could you please help me?

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Connect the yellow wire directly to the battery (this is constant 12v power, to maintain memory settings). Red wire gets wired to the switched 12v system (so that the stereo turns on and off with the ignition). Blue wire (or blue/white) would be for an antenna or an amplifier (if not used, just seal it off with electrical tape). Orange wire isn't used (that's a dimmer wire for tapping into a car's dash light dimming). Black is ground. The rest of the colored pairs (gray, gray/black, green, green/black, white, white/black, purple, purple/black) are the speaker outputs. The wires with the black stripes are the negative wires in each pair. They usually say on them which color corresponds to which speaker location (front left, rear right, etc). If not, take a look on the Alpine unit - sometimes there's a decal or diagram on there, or a list, which will tell you which wires to connect to which speakers.

Posted on Sep 27, 2008

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Please let me know if you have any questions, and thanks for using FixYa.

1993 Dodge Dakota CDA-9833
Car Radio Battery Constant 12v+ Wire: Red yellow
Car Radio Accessory Switched 12v+ Wire: Red/White red
Car Radio Ground Wire: Black black
Car Stereo Dimmer Wire: Orange (tape this wire off) none
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Please let me know if you have any questions, and thanks for using FixYa.

2004 Toyota RAV4 Car Stereo Radio Wiring Diagram Alpine wire color
Radio Constant 12V+ Wire: Blue/Yellow yellow
Radio Ignition Switched 12V+ Wire: Gray red
Radio Ground Wire: Brown black
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Radio Amplifier Trigger Wire: N/A blue/white
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Front Speakers Location: N/A
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Left Front Speaker Wire (-): Purple white/black
Right Front Speaker Wire (+): Light Green gray
Right Front Speaker Wire (-): Blue gray/black
Rear Speakers Size: N/A
Rear Speakers Location: N/A
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Left Rear Speaker Wire (-): Yellow green/black
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Wiring colours


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the plug from the old sterio should have the following:
Black- Earth
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Yellow green (12v all the time) even if key is in the off position)
you can check the speakers by using a 9v battery and QUICKLEY toutching the wires on the terminals to distinguish what two wires run to what speaker.
Then use the same sequance for wiring the headunit making sure thar all the solid colour wires are used as the positave connection for the individual speaker wires.

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Hello tblau7716,

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Hope this helps.

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